Chicago Structural Engineers

in Chicago, IL

770
Structural Engineers are
in Chicago

24
Structural Engineers in Chicago
are top rated

A
Rated by
Samuel N.
"
and his team did a fantastic job of diagnosing the problems we had with our basement. They provided clear, detailed suggestions for different approaches in terms" of time and cost that we could take. When we first met with them, we had an idea of the project that could have worked, but they recommended a solution that was actually simpler and cheaper and still accomplished what we wanted to do with our basement. Their workers were friendly, neat, and professional, and the work they completed looks excellent. We even had a big set of built in wooden shelves that needed to be removed to get to the area that needed work, and at our request their men did a fantastic job of disassembling the shelves in a way that would allow me to rebuild them as they were before. Throughout the entire process I really appreciated their honesty, flexibility, and professionalism. I would definitely recommend
and will contact them in the future for any similar work I need done.
A
Rated by
Brian L.
"
was fantastic to work with! My initial conversation had me asking all kinds of questions and expressing multiple concerns as a first time home owner with a" structural issue.
took the time to listen and explain everything to me in a manner I could comprehend. On site,
was dedicated, patient and again took his time to answer questions and point everything out to me. His interactions with the contractor, who was also on site, was professional and honest. I also received some great advice in selecting a contractor to perform the work and recommendations of his experience with some of them. Would use again in a heartbeat.
A
Rated by
Brian L.
"
and
were fantastic to work with throughout the entire project. What really stood out was their attention to detail and patience to answer" a plethora of questions we had as new home owners. A major factor we learned early on was that this company knows what their area of expertise is, and doesn't just try and guess at things that may be outside of their scope. For example, at our initial consultation it was suggested we bring a structural engineer in because while
could speculate they were not going to be able to provide the definitive answers/solutions needed. You would think this is common sense for a contractor but my experience has been that many want to get in and get out of the job, that's it. This concept of deferring to others was also confirmed through the structural engineer we hired when we asked about his previous work with
. He appreciates the fact
and
do not take the sketches/drawings and make modifications; if they have an alternative solution or question once the job has commenced, they call up the engineer and talk it through. This actually happened on our project and saved us from cutting into multiple walls and unnecessary work. Friendly, straightforward, polite and cleaned up when finished. On one hand I will definitely use
again in the future if I have any structural issue to contend with. Having said that, I kind of hope I never have to call them again ... if you know what I mean.

Local Articles in Chicago

structural engineer

Have a foundation crack? Consult a structural engineer

Are you worried about a crack in your home's foundation. A structural engineer can examine the crack and determine if your house is safe or hazardous to live in.

Your home needs a strong foundation to keep those inside safe. Structural engineers can help. (Photo courtesy of Angie's List member Randy S.)

Structural Engineers

Your home's ability to withstand the forces of nature and gravity depend on good structural engineering. Building room additions, correcting foundations and repairing structural damage are all projects that call for a structural engineer's expertise.

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Contractors say homeowners with this trait are the most satisfied with home improvement projects.

earthquake retrofit
Remodeling - General, Structural Engineering

Earthquakes can strike out of nowhere and cause major damage to your home. Consider these tips to protect your home from earthquake damage.

bowed interior block foundation wall
Structural Engineering

Does your home have horizontal cracks in its concrete block foundation? Check out these common causes and repairs for horizontal foundation cracks from a highly rated structural engineer.

If you come home to a wet basement or crawl space, make sure you get credible advice before agreeing to pay for any repairs. (Photo courtesy of Angie’s List member Michelle B. of Indianapolis)
Structural Engineering

A highly rated structural engineer explains why it may be best to hire an engineer and draft a plan before hiring to repair a wet basement or crawl space.

Angie's Answers

?

This can be maddening. Over the past 40+ years, in 4 houses, I have had or have run across this problem from gas meter leakage, water well pump column vibration, doorbell transformer, circulating pump, an extremely small (mist spray) water pipe leak, flourescent and sodium lights, security system horn dead battery, gas meter leaking slightly, bees in wall, bat colony, electric typewriter left on, stereo left on very low, and speaker inductive hum.

This seems to be a popular and recurrent question, so I am going to give the long answer for use by future questioners too.

I am assuming you do not hear this noise away from your house, or that other family members can hear it to. Obviously, if you hear it elsewhere also and other family members cannot hear it, then maybe you have tinninitus or are hearing your own high blood pressure blood flow (seriously). This commonly gets more acute at night when it is quiet, so all you are hearing is your internal ear sounds. I had this happen once because of a middle ear blockage - drove me crazy, getting up in the middle of the night because I thought I heard a water leak through the walls. Try putting on a pair of earmuffs or hearing protectors - if you still hear it or hear it louder, this is probably the case.

One method if hum is on the clearly audible side is make a 2 foot long cone out of paper to hold against your ear - like an antique hearing horn - then in each room face each of 4 directions while listening for where sound is the loudest, and turn your head to pinpoint the exact direction - I would spend 10 minutes doing this before getting into detailed stethoscope listening.

Otherwise, sounds like time for the old stethoscope (about $12 at a drug store - get a metal soundhead one, not cheap plastic, which does not pick up vibration as well). Also, if you are older (say over 35 or so) your hearing might have started to deteriorated with age, so if you have children or grandchildren with sharp hearing, they might be able to help track it down. I am sure a young child or grandchild, if you have one, would love this sort of treasure hunt (with appropriate "treasure" for a reward for tracking it down). 

Being careful not to come in contact with electricity with the stethoscope, check all the likely sources listed below. Start by placing it against pipes and walls and floor in each room of the house - water sourced noise goes a long ways, and tends to reverberate in the walls, so if that is the source likely to hear pretty easy. Hold stethoscope against bare pipes, both hot and cold, and heating system radiators or hot air vents.

If listening to water and hot water heating pipes indicates it is not water sourced, then you could turn off the master (outside) breaker or all the inside breakers and see if it goes away. I would only do this during above-freezing weather and early on a weekday, just in case a breaker fails to turn back on correctly when you switch it. Older master breakers particularly, which typically have never been used, sometimes break or fail to reclose properly after being shut off, so then have to be replaced. You want to be doing this at a time of day when, if necessary, you could get an electrician in the same day to replace it without paying weekend or nighttime emergency call rates.

If turning off the master breaker (or all other breakers) eliminates the hum, then turn them on one at a time until you find the one that turns the hum back on, then track where that circuit likely feeds (hopefully it is labelled) and check every switch, outlet, and light fixture.

Humming sources include (not in any particular order, a + in front means likely or common source of humming, - means rare or not likely):

1) + toilet fill valve - slightly leaking toilet inlet valve (listen where water tubing comes into toilet tank, and look inside tank to see if there is any water flow into or ripppling of the water in the tank or the bowl, or from the bowl filling tube (usually a small black plastic flexible tube which comes out of the fill valve (usually far left side of tank) and is clipped onto and discharges down into a hollow vertical brass or plastic tube or pipe in the toilet tank, which refills the toilet bowl after you flush)

2) + leaking faucet - kitchen, tub, shower, sink, utility tub, etc - it is amazing how just the smallest valve leak can make a hum or hiss that you can hear through the walls (especially at night), but only drips every few seconds.

3) - electric service meter dial motor

4) - electric breaker panel - rarely, a loose main power feed to a panel (especially with aluminum main service wire) will get loose enough that it vibrates back and forth and hums in its connector. A loose bus or snap-in breaker slot cover plate in the panel can also do this rarely

5) - gas meter or overpressure vent (unlikely, as you have had it replaced)

6) + boiling in the bottom of hot water heater or boiler because of buildup of lime, but would usually be intermittent - only when unit is heating

7) + furnace fan or electrostatic filter (forced air heat), or circulating pump (hot water baseboard heating), or steam condensate pump or overpressure venting (steam system).

8) - gas control valve or electric control box on a gas furnace, or its transformer (most have a 120V to 24, 16 or 12V transformer inside the front of the furnace

9) + air filter or electrostatic filter alarm on forced air furnace - some have a passive "whistle" opening that sounds softly when the filter is getting blocked, and if blocked with dust could make a hum rather than a whistle.

10) + Some water softener systems also have an "alarm" device to tell you it is time to service the unit, so check that if you have such a unit.

11) - a slightly leaking overpressure/overtemp valve on hot water heater or furnace (would be dripping)

12) - air venting from the air vents on hot water heating system. These will commonly make a hum or wheeze sound, for only for a few seconds at a time - not continuous unless leaking water

13) - city water system booster pump sound through the water column (if there is one near your home) - listen at the incoming water pipe - if much louder there than at other pipes within the house, that could be a house, though unlikely. If you think this could be it, find your water shutoff valve (typically 10' into your lawn from the street) and listen there. Would also be audible at neighbor's service pipe if that is the source.

14) - gas system compressor sound coming through gas pipe - listen to gas pipe outside the house and inside the house near furnace - if louder outside,, this could be a possible source, but the compressor or pressure reducer would have to be near your house. Would also be audible at neighbor's service pipe if that is the source.

15) + auxiliary booster circulating pump in your hot water or steam heating system (there may be one separate from the furnace, likely in the basement or a utility closet - most commonly found on  multi-unit apartment building with central heating and in 3 story or higher buildings, but you never know)

16) + a water leak, either inside or a leaking hose bib or pipe, or in your service pipe coming to the house

17) - electric on-demand water heater or electric-powered water filtration unit under the kitchen sink or inthe basement

18) + refrigerator compressor or fan hum

19) + doorbell transformer (front or back door - transformer is usually NOT at the doorbell, it is usually mounted in an open space like nailed to a basement joist, in an entry closet, or in the cubby space under the stairs - always physically near to the door, but NOT always on the same floor)

20) - any instant-on device like a TV

21) + any audio device (stereo, iPod, music player dock, computer, etc) that may have been left on at very low volume. Also, VERY rarely, if stereo or external speaker wires are run close to and parallel with an electric wire in the wall, they will acquire an  inductive voltage and hum.

22) + anything with a transformer, including stereo, add-on computer or iPod speakers, battery charger (rechargeable batteries or spare car battery or rider mower or boat battery charger), any portable electriconic device. Also portable device chargers (computer, iPod, cell phone, etc) - even if the device is not plugged into the transformer, as long as the transformer (charger) if plugged into an outlet, it is transforming high to low voltage, and transformers commonly hum

23) - electric typewriter left running

24) - electric ultrasonic cleaner or denture cleaner or electric toothbrush left on 

25) - home hair drying hood left on

26) - a lint buildup-jammed bathroom, kitchen, or attic fan. Many of these have, for safety, so called "self limiting" motors that if they jam just sit there and hum, but do not burn out.

27) - an attic cooling fan whose thermostat has failed, so is on all the time

28) - electronic furnace thermostat

29) + air conditioning unit, or aquxiliary air conditioner evaporator

30) + humidifier / dehumidifier - either permanently installed or portable

31) + portable heater / fan / air purifier

32) - automatic animal feeder waterer - either water supply or electric, as applicable

33) - dishwasher motor runningcontinuously - not shutting down after end of cycle

34) - convective or direct-vent oven or cooktop exhaust fan not shutting off

35) + flourescent (tube or CFL) or sodium or halogen light bulb / ballast hum (either inside, outside front door fixtures, or public street lights). These can hum quite pesistently when the starter circuit sticks on, or the bulb is dying and will not start (light completely), so the started circuit tries continually to start the lamp - can make a hum audible up to a block away on street lights.

36) - a dying electronic photocell designed to turn on your outside lights

37) - home security system, especially its alarm or horn. If the alarm is sounding but for some reason the main power is not getting to it, then as the battery goes dead (or if full voltage is not getting to it) is can give off a squeek, hum, or rasping sound - ditto if insects like wasps or hornets build a nest in it, so it cannot sound correctly.

38) + well pump, pressure tank, or filtration system, if you are on a well

39) + insect or bat nest in the attic or walls or in outside bins or cupboards, electric panel/meter, or outside telephone connection box (bees /wasps / hornets most likely) - though this usually varies by time of day, although it would "pulse" at the time of day when they are waking up or going to sleep.

40) + carpenter ants or termites - their continuous chewing of the wood can sound like a hum till you get right up against the colony, then you can actually hear the chewing

41) - a regional hum, as has been occurring at times in Ohio, Wisconsin, and Arkansas - where micro-seismic activity causes a hum or booming sound. Google or call your local paper and see if anyone has been reporting this in your area.

42) + outdoor power service transformer - either a metal (typically army green or gray) about 1 foot diameter "can" mounted on a power pole if you have overhead service, or a 2-3 foot cubic metal box on the ground or in a manhole pit near the street if you have underground service, which usually serves 4-6 houses (so may be in a neighbor's yard) and will have a voltage rating marked on it, usually in yellow stick-on lettering - like 4160V - 220V. Usually has high voltage - keep away safety markings on it.

43) - you have found where the Caddyshack gopher (who hummed to himself) moved to after Bill Murray blew up his happy home at the golf course.

Hope this list helps you (and future users with the same question).

?

There is NO such thing as an average cost !

 

You are going to be required to have a building permit and the Building Comissioner

or Senior Permit Official of your local permit office will issue a determination as to whether you will be required to have a Steel Bearing Beam , a Laminated Bearing Beam or some other Beam to support weight of the structure you want to ammend . You  may also be required to install Bearing support posts footings,  at either end of the beam as well. Much will depend as to what is over  and under the space that you wish to span .The official may require you to retain an Architectual Engineer to perform a Load study and computations and require you to  comply with his recomendations .

 

 Until you know what is required by the Permitting Office , Then and only then will you be able to determine the true costs .

 

The fact that you have existing baseboard heat , and we know NOT if it is electric or radiant baseboard heat will complicate the issue as well the existing electrical outlets which may need to be sunken into the floor in order to maintain the electrical circuitry as it exists.

 

 Past experience in these matters , indicate possible costs to range from  $4000.00 to  as much as  $8k -$10,000.00 . I realise that these cost ranges are probably NOT what you want or expect , but There are too many unknowns to attempt a closer cost expectation or range of expenses !

?

Architect first - for around $1000 typically you will get site consultation, a few sketches showing what you said you wanted, and a preliminary (by the book) cost estimate - that you can use to figure if your budget or scope of work needs major adjustment. Then, if you go ahead, typically about 10-20% of total project cost for complete plans and specs (including above cost), depending on complexity and level of interior design detail, and if construction inspection services are included.

 


 
 
Generally, nothing is free with an architect - unlike a contractor where a bit of consultation and a rough estimate is a lead-in to the actual work he hopes to get (the construction/repair) and part of his bidding cost, an architect (and engineer) makes his living giving advice and consultation and developing designs and cost estimates - so giving it away for free is sort of like a dentist doing sample fillings for free. Some will come to your house to discuss your concepts for 15-20 minutes for free, basically to see if they want to take you on as a client or feel your job is the type or size they want, but you should expect little or nothing in the way of a design or cost estimate for free - the most you might get would be an opinion on whether it sounds, off the cuff, like your budget is roughly in line with your desired scope of the project.
 
 
On more complex or up-scale remodels, it is not unusual to contact several architecture firms and request proposals - where they basically come see the site, then give you a sketch or few or more common today, computer-generated altered photos of your place, showing conceptually what they can do for you, then you choose the one you like the most and go with that one for final design. Typically $500-1000 range fee (each) to get that done for small jobs, larger jobs will typically be no charge but that assumes probably $25-50,000 plus anticipated fees if they get the job.
 
 
Bear in mind in the latter scenario you cannot pick and choose betweenthe best parts of each proposal - the architect owns the design and it is copyrighted, so while you can choose bui9lding elements (dormers, bay windows, etc) from any of the proposals, specific design or color combinations are copyrighted by the proposer.
The Search the List category is Architects and Building Design.
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?
The key is to have drainage away from the house, and not introduce water to the foundation unnecessarily. If you can slope the existing backfill soil from the foundation away from the house at least 1/2 inch to 1 inch in the 2 foot space to the walk and pack it down, then putting a ground cover on it will not hurt - it is the relatively impervious layer sloping away from the house you want. If you use rocks I would underlay them with some 6 mil or thicker black plastic sheeting (available in small rolls at home supply stores and lumber yards). If planting, the same would be nice if the plants you choose spread laterally like Epimedium, so they will grow in just a fewe inches of topsoil over the plastic. Otherwise, tamp down the dirt to make it a hard, draining surface (at least when it rains heavily) before topsoiling and planting. Keep a slope on the topsoil too, and avoid overwatering. Do not plant anythig with highly invasive, tenacious or deep burrowing roots like bushes, ivy, or trees near the house, as the roots will penetrate the waterproof barrier on the outside of the foundation, and then you might start getting leaks. The roots can even penetrate the concrete block joints and start breaking up the foundation. For this reason, annual flowers, shallow-root ground covers, bulb plants and rock gardens are far better within 3 feet or so of the foundation than larger plants or intensive gardening.
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Structural Engineering reviews in Chicago

D

Rating
I contacted this provider via their website to obtain an estimate for a second story addition. They called me back in approximately 2 days and left a message. I called back the next day and spoke with a lady who seemed to be a family member of the contractor. I left all my contact information and was told the contractor would call me right back. I was never contacted again by this company.
- John M.
B

Rating
E-mailed the firm to see if they could assist with a sagging floor our home seems to be experiencing. Had a structural contractor come out and assess the situation and he suggested further inspection from an engineer.
Received a very timely and polite reply stating that due to their schedule they could not assist us at this time.
- Brian L.
A

Rating
I bought a new condo they needed the carpet removed, additional closet space and storage, lighting fixtures, electrical work, kitchen back splash and a feeling of home. Ed and his team made all of that happen and more. I still need a lot more work done but they made it feel more like a home then ever before.
- Tatonya T.
A

Rating
Chicago Structural Engineers Provider Name Locked
(in the office) and
Chicago Structural Engineers Provider Name Locked
(running the job) were great! They patiently answered all of our questions. They charged exactly what they estimated--no unhappy surprises. They evaluated for additional work that we thought might need (pouring new footings) and determined that it was not necessary. We wouldn't have known the difference, and the additional work could have made significantly more money for them!. They were prompt with their initial contact, and started the job sooner than we expected. Very professional. Great experience.
As for the price, we believe that it was the appropriate price for the work done, but I kind of wish that Angie's list had a category for "I really have no idea" when it comes to pricing. This type of work is expensive, but it was certainly worth it to us for our peace of mind. We feel like we spent our money well and got great work!
We would hire
Chicago Structural Engineers Provider Name Locked
again if another need arose, and we would recommend them to others!
- Pamela F.
A

Rating
We were experiencing quite a bit of stress as new homeowners with potential foundation problems.
Chicago Structural Engineers Provider Name Locked
did not recommend any unnecessary work, though he could have quite easily taken advantage of our anxiety. He was direct about the repairs that needed to be done and gave us options regarding how we handled repairs that he felt were not mandatory. The work was completed in 4 days and the workers were respectful of our home. He took his time explaining to us what to watch for in our home in the future and was a pleasure to work with.
- Amanda B.
A

Rating


Chicago Structural Engineers Provider Name Locked
was able to accommodate my urgent schedule, were prompt and friendly, and completed a major job in just several days. They even did a little extra work and did not charge me. Both the estimate and work were quick and professional and both
Chicago Structural Engineers Provider Name Locked
and
Chicago Structural Engineers Provider Name Locked
were great!
- Jeanne S.
A

Rating
I had an very positive experience with
Chicago Structural Engineers Provider Name Locked
. They are considered the best, but I was really impressed with their extraordinary service.

I had called
Chicago Structural Engineers Provider Name Locked
and asked for their opinion on various concerns pertaining to repair work that was under way on a condo project. Much to my surprise, they volunteered to step in and actively help. They offered to speak to all of the involved parties on the project and explain how the work could be safely performed. Having another contractor get involved was unusual, but
Chicago Structural Engineers Provider Name Locked
felt strongly that it was the right thing to do in this situation.

Chicago Structural Engineers Provider Name Locked
went out of their way on more than one occasion to meet with me last minute to go over key issues that came up during the project. They took calls I made to them throughout the project, even those on the weekends. In addition, they made recommendations on everything from finding a place to relocate to during the project and suggested people in other specialty areas that I might contact regarding other work. They even checked in with me along the way to see how things were going.

Chicago Structural Engineers Provider Name Locked
was a great support throughout and their service went far and beyond expectations. I am thankful to them for that support as it made a world of difference. With their high level of integrity and experience, strong technical and personal skills, they are an unusual group. I highly recommend working with
Chicago Structural Engineers Provider Name Locked
.
- KATHARINE R.

All Structural Engineers in Chicago, IL

Companies below are listed in alphabetical order. To view top rated service providers along with reviews and ratings, Join Angie's List Now!

12/12 ARCHITECTS & PLANNERS

644 67TH ST
Downers Grove

1335 ASTOR COOPERATIVE BLDG

1335 N ASTOR ST
Chicago

21M GROUP

203 N WABASH AVE
Chicago

A M KINSEY ENGINEERING CO

25630 N Kyle Ct
Lake Zurich

A NEW VIEW REDESIGN

1458 POLO DR
Bartlett

ABATANGELO-HASON LTD

825 E Rand Rd Ste 290
Arlington Heights

ABM ENGINEERING

180 N La Salle St Ste 1700
Chicago

ABNA OF ILLINOIS

9901 S WESTERN AVE
Chicago

ACCURATE ENGINEERING LABORATOR

2707 W CHICAGO AVE
Chicago

ACORN DEVELOPMENT & RESTORATION

526 N KENSINGTON
La Grange Park

ACOUSTIC CUSTOM SOLUTIONS

5390 FIELDSTONE WAY
Mchenry

ADVANCE CONSULTING GROUP INTL

300 W ADAMS ST
Chicago

Advanced Roofing & Construction

47 West Polk St
Chicago

AENON CONSULTANTS LTD

PO Box 1943
Bolingbrook

AEROLITE & ASSOC INC

1475 GLEN LAKE RD
Hoffman Estates

AIR FILTERS ENGINEERS

385 Kimberly Dr
Carol Stream

AKHRAS ASSOCIATES INC

9306 Odell Ave
Bridgeview

ALA Architects & Planners, Inc.

2600 Behan Road
Crystal Lake

ALFRED BENESCH & COMPANY

205 N MICHIGAN AVE
Chicago

ALFRED G RONA LTD

230 W MONROE ST
Chicago

ALIVE TELECOMMUNICATION INC

9850 W 190th St Ste F
Mokena

ALL CONTROL ENTERPRISES

1644 CAMBRIDGE DR
Elgin

All Quality Inc

6348 North Milwaukee Ave
Chicago

ALLAN H GOLD STRUCTURAL ENGR

123 W Madison St Ste 1600
Chicago

ALPHA ENGINEERING LTD

27 E Monroe St Ste 700
Chicago

ALSTOM POWER

1245 E DIEHL RD
Naperville

ALSTROM POWER

4525 WEAVER PKWY
Warrenville

ALTRAN SOLUTIONS

1590 S MILWAUKEE AVE
Libertyville

ALVORD BURDICK & HOWSON

125 S WACKER DR
Chicago

AMBER PRATT

950 PRATT BLVD
Elk Grove Village

AMBITECH

1411 Opus Pl Ste 200
Downers Grove

AMD Remodeling And Painting

1924 73 Road Court
Elmwood Park

AMERIBUILD INC

8700 W BRYN MAWR AVE
Chicago

AMERIBUILD INC

5940 W TOUHY AVE
Niles

AMERICAN BOA

407 S DEARBORN ST
Chicago

AMERICAN ENGINEERING CO

2725 THATCHER AVE
River Grove

AMERICAN ENGINEERING INC

3 W COLLEGE DR
Arlington Heights

AMERICAN GEOENGINEERING INC

399 WALL ST
Glendale Heights

AMERICAN SCIENCE & TECH CORP

1324 W GRAND AVE
Chicago

American Virtual Associates

304 Whitelaw Avenue
East Alton

AMG INC

2 E 22ND ST
Lombard

AMSCO ENGINEERING INC

5115 BELMONT RD
Downers Grove

AMTECH ASSOCIATES INC

6166 N Sheridan Rd Apt 2L
Chicago

ANDERSON ENGINEERING

312 ROMA JEAN PKWY
Streamwood

ANERGEN

2332 MARCY AVE
Evanston

APACS SVC INC

610 ROBERT YORK AVE
Deerfield

APEX 500 LLC

500 E 22ND ST
Lombard

APEX CONSULTING ENGINEERS LLC

111 E Wacker Dr Ste 520
Chicago

APPLEXION

606 POTTER RD
Des Plaines

APPLIED GEOSCIENCE INC

2385 Hammond Dr Ste 6
Schaumburg

APPLIED MATERIALS TECHNOLOGIES

28W210 CANTIGNY DR
Winfield

APPLIED TECHNOLOGIES

8801 Royal Swan Ln
Darien

ARCADIS GERAGHTY & MILLER INC

35 E WACKER DR
Chicago

Architects & Engineers Inc

419 Randolph St
Oak Park

ARI General Contractors

131 Normandy Dr.
Addison

ARMSTRONG AEROSPACE

1437 Harmony Ct
Itasca

ARMSTRONG ENGINEERING SVC INC

720 ARMSTRONG DR
Buffalo Grove

ARTECH ENGINEERING

8932 BRANDON RD
Darien

ARTLOW SEALING ENGINEERS

170 S GARY AVE
Carol Stream

ARZOUMANIAN & CO

8201 Skokie Blvd
Skokie

Asrow Building Consultants, Inc.

8820 Skokie Blvd.
Skokie

ASSOCIATED ENGINEERING & TECH

4S100 ROUTE 59
Warrenville

ATC ASSOC INC

1815 S Meyers Rd Ste 670
Oakbrook Terrace

Atlas Restoration LLC

545 Depot Pl
Buffalo Grove

ATR CORP

5316 HOWARD AVE
Western Springs

AUTOMATED SYSTEMS INC

11 N SKOKIE HWY 115
Lake Bluff

AUTOMATION & POWER CONVERSION

1022 LUND LN
Batavia

AUTOMATION HORIZONS

2720 S RIVER RD
Des Plaines

AUTOMOATED ANALYSIS DIV

3130 FINLEY RD
Downers Grove

AXIOM GROUP LTD

12029 Arlene Dr
Homer Glen

B CUBE INC

710 N FAIRBANKS CT
Chicago

B GLENN DESIGN INC

PO Box 988
Itasca

B P BITUMEN

200 E RANDOLPH ST
Chicago

B T CUT BRICK

42471 n linden ln
Antioch

BAKER ENGINEERING INC

311 W Monroe St Ste 1350
Chicago

BALLAS ENGINEERING INC

999 N PLAZA DR
Schaumburg

BARRETT ENGINEERING

34W049 FOX RIVER DR
Dundee

BARRY A GOLDBERG & CO

8340 LINCOLN AVE
Skokie

BASCOR ENVIRONMENTAL INC

535 S Rammer Ave
Arlington Heights

BAXTER & WOODMAN

8840 W 192ND ST
Mokena

BAXTER & WOODMAN INC

300 PARK BLVD
Itasca

BAXTER & WOODMAN INC

8678 RIDGEFIELD RD
Crystal Lake

BBL

30 W MONROE ST
Chicago

BECKLEY ENGINEERING INC

343 DANIELLE RD
Matteson

BENTLEY SYSTEMS INC

750 Warrenville Rd Ste 306
Lisle

Berg Engineering & Sales Company, Inc.

3893 Industrial Ave.
Rolling Meadows

BERG ENGINEERING CONSLNTS LTD

801 W WISE RD
Schaumburg

BERITUS

527 S Wells St Fl 7
Chicago

BIOMEDICAL ENGINEERS

1785 W CORTLAND CT
Addison

BLACK HORSE ENGINEERING

459 N LARCH AVE
Elmhurst

BLECK ENGINEERING CO INC

1375 N WESTERN AVE
Lake Forest

BLEY ENGINEERING CO

7000 CHASE AVE
Elk Grove Village

BLM ENGINEERS INC

410 E SCHILLER ST
Elmhurst

BLOOM CONSULTANTS LLC

600 W FULTON ST
Chicago

BLOOM ENGINEERING INC

5460 CURRY
Homewood

BLUE ARC ENERGY SOLUTIONS INC

222 N KENSINGTON AVE
La Grange

BOLLINGER LACH & ASSOC

1010 JORIE BLVD
Oak Brook

BOLLINGER LACH & ASSOC

8700 W BRYN MAWR AVE
Chicago

BOLLINGER LACH & ASSOC

333 W PIERCE RD
Itasca

BONO CONSULTING

1018 Busse Hwy
Park Ridge

BRADY CONSULTING SVC

18 TUSCAN CT
Oak Brook

BRIGHTON ENGINEERING

85 W ALGONQUIN RD
Arlington Heights

BROOKFIELD ENGINEERING LAB

303 N EASTWOOD AVE
Elmhurst

BRYTON ENGINEERING

1111 E WARRENVILLE RD
Naperville

BUKER INC

800 MAIN ST
Antioch

BURNS & MC DONNELL ENGINEERING

1431 OPUS PL
Downers Grove

BURNS MC DONNELL

300 W ADAMS ST
Chicago

C C JOHNSON & MALHOTRA

550 W WASHINGTON BLVD
Chicago

C M LAVOIE & ASSOC

4941 FOREST AVE
Downers Grove

C T AMELSE ENGINEERING LAND

8813 HIGHWAY 31
Cary

CABLE TECH DESIGN

475 S FRONTAGE RD
Willowbrook

CAE ASSOC INC

800 W CENTRAL RD
Mount Prospect

CALOR DESIGN GROUP

2217 N WESTERN AVE
Chicago

CALUMET TESTING SVC INC

1945 GRIFFITH BLVD
Lansing

CARDINAL STRUCTURAL DESIGN INC

1708 ASHTON CT
Wheaton

CARL WALKER INC

2198 GLADSTONE CT
Glendale Heights

CARTLAND & KRAUS ENGINEERING

760 TELSER RD
Lake Zurich

CASCADE CONTROLS

8525 183rd St
Tinley Park

CASTLE ENGINEERING CO

3579 W COLUMBUS AVE
Chicago

Century Bay Builders Inc

18528 W Country Ct
Libertyville

Chapple West Inc

103 N 11th Ave Ste 131
Saint Charles

CHARIS KAGIS

3450 W IRVING PARK RD
Chicago

CHAWLA & ASSOC INC

111 W WASHINGTON ST
Chicago

CHEMSTRESS CONSULTANT CO

81 N CHICAGO ST
Joliet

CHICAGO ACOUSTIC CORP

1018 S FINLEY RD
Lombard

Chicago Adjusting Co.

7312 W Lawrence Ave
Harwood Heights

CHICAGO CHEM CONSULTANTS CORP

4601 W TOUHY AVE
Lincolnwood

CHICAGO CHEM CONSULTANTS CORP

14 N PEORIA ST
Chicago

CHICAGO CONTROL SYSTEMS

1743 N LOCKE LN
Vernon Hills

CHICAGO CONTROL SYSTEMS INC

89 S WINDSOR PL
Mundelein

CHICAGO REFURBISHMENT CO

9436 47th St
Brookfield

CHICAGO SAFETY INSTITUTE

1023 171ST ST
Hazel Crest

CHICAGO TESTING LABORATORY INC

1348 Ridge Ave
Elk Grove Village

CHICAGO TESTING LABORATORY INC

3966 W DAYTON ST
Mchenry

CHRIS GLENN

219 N JUSTINE ST
Chicago

CHRIS P STEFANOS ASSOC

4532 W 103RD ST
Oak Lawn

CHRISTIAN BINGHAM

5517 W CHICAGO AVE
Chicago

CHRISTOPHER B BURKE ENGINEERNG

1681 VERDE LN
Mundelein

CHRISTOPHER B BURKE ENGNRNG

9575 W HIGGINS RD
Des Plaines

CIORBA GROUP INC

5507 N CUMBERLAND AVE
Chicago

CIS LIGHTING

1326 RICHMOND LN
Bartlett

CIVCON SERVICES

12775 Rosewood Dr

CIVIL ENGINEERING SVC INC

2119 Jessica Ct
Naperville

CIVIL GROUP ENGINEERING

203 N WABASH AVE
Chicago

CIVILGROUP ENGINEERING

203 N WABASH AVE
Chicago

CIVILTECH ENGINEERING INC

450 E DEVON AVE
Itasca

CLARENCE J REICH

1400 W EDGEWATER AVE
Chicago

CLARK DIETZ ENGINEERING

9508 BELMONT AVE
Franklin Park

CLARK DIETZ INC

118 S CLINTON ST
Chicago

CLAUDE H HURLEY CO

175 W 1ST ST
Elmhurst

CLEAN WORLD ENGINEERING LTD

70 W MADISON ST
Chicago

CODE ENGINEERING SVC

2021 MIDWEST RD
Oak Brook

COLLINS ENGINEERS

123 N Wacker Dr Ste 900
Chicago

COMMAND ENGINEERING

5249 N LAWLER AVE
Chicago

COMPLIANCE ENGINEERING INC

24W600 SAINT CHARLES RD
Carol Stream

COMPLIANCE TEAM INC

1 E NORTHWEST HWY
Palatine

COMPUTER INFORMATION SYSTEMS

7840 LINCOLN AVE
Skokie

CONCEPT MECHANICAL ENGINEERING

730 E THACKER ST
Des Plaines

CONCEPTUAL ENGINEERING INC

860 HINMAN AVE
Evanston

CONCORDIA INC

2015 S ARLINGTON HEIGHTS RD
Arlington Heights

CONCRETE STRUCTURES OF MIDWEST

1845 WESTERN DR
West Chicago

CONSOER TOWNSEND ENVIRODYNE

303 E WACKER DR
Chicago

CONSOLIDATED CONSULTING ENG

212 S MILWAUKEE AVE
Wheeling

CONSULTING ENGINEERS

601 W GOLF RD
Mount Prospect

CONTROL ALT DESIGN LTD

1760 BRITANNIA DR
Elgin

CONTROL SYSTEMS INC

200 W MADISON ST
Chicago

COSMODOG LIMITED

415 W HURON ST
Chicago

COWHEY GUDMUNDSON LEDER LTD

212 W KINZIE ST
Chicago

COWHEY GUDMUNDSON LEDER LTD

700 Springer Dr
Lombard

CRAWFORD MURPHY & TILLY INC

600 N COMMONS DR
Aurora

CREATIVE IMPACT STAGE MASTER

1734 AUBURN AVE
Naperville

CREATIVE STRUCTURAL CONCEPTS

9532 Lenox Ln
Crystal Lake

CREATIVE STRUCTURAL CONCEPTS

575 TOLLGATE RD
Elgin

Criterium Collins

419 Randolph St
Oak Park

CROWN FLUID POWER

6521 N ALBANY AVE
Chicago

CS2

831 OAKTON ST
Elk Grove Village

CSA GREAT LAKES INC

21 W ILLINOIS ST
Chicago

CSI INTL

10 W JACKSON BLVD
Chicago

CTE ENGINEERS INC

303 E WACKER DR
Chicago

D & D ENGINEERING

1020 S WABASH AVE
Chicago

D & D ENGINEERING

641 W LAKE ST
Chicago

D & F ENGINEERING INC

700 INDUSTRIAL DR
Bensenville

D & H PIPING ENGINEERS SWERS

5051 S WESTERN AVE
Chicago

D & W ENGINEERING

266 MAYFLOWER LN
Bolingbrook

DALY CO ENGINEERING

12516 S ASHLAND AVE
Riverdale

DANIEL CREANEY CO

450 SKOKIE BLVD
Northbrook

dans construction

940 n n0ble
Chicago

DAVID E ROSENBLATT PE

4835 MAIN ST
Skokie

DAVID MASON & ASSOC INC

464 N MILWAUKEE AVE
Chicago

DAVID TANNENBAUM PE

39432 N NORTH AVE
Zion

DBHMS

8695 ARCHER AVE
Willow Springs

DCS CORP

2612 ROCKPORT LN
Naperville

DELCAN CORP

650 E Algonquin Rd Ste 400
Schaumburg

DELTA CONTROL DESIGN

384 SCHILLER ST
Elmhurst

DELTA ENGINEERING INC

111 W JACKSON BLVD
Chicago

DENES NAGY ASSOC LTD

680 N LAKE SHORE DR
Chicago

DESIGN & PROCESSING RESOURCES

12009 S SPAULDING SCHOOL DR
Plainfield

DESIGN INTEGRITY INC

1608 N MILWAUKEE AVE
Chicago

DESIGNBRIDGE LTD.

1415 W Grand Ave
Chicago

Destiny Development Team

7538 W Touhy Ave
Chicago

DEVERY ENGINEERING

16745 W Bluemound Rd Ste 200

DIAMOND DESIGN GROUP

905 FORTRESS DR
Fox Lake

DICKERSON ENGINEERING INC

8101 N MILWAUKEE AVE
Niles

DILLABAUGH INC

2005 E US 231

Domicile Consulting

2545 West Diversey
Chicago

DOMINION ENGINEERING

3817 MCCOY DR
Aurora

DONOHUE & ASSOC INC

1015 N CORPORATE CIR
Grayslake

DOUGLAS G PETERSON & ASSOC INC

1107 BONESET DR
Crystal Lake

DOWIATT BROWN & ASSOC

12542 S HARLEM AVE
Palos Heights

DOWNERS GROVE INSURANCE

8348 ADBETH AVE
Woodridge

DRILL HEAD & PARTS ENGINEERING

8404 WILMETTE AVE
Darien

DRUCKER ZAJDEL STRUCTURAL

209 WINDING CREEK DR
Naperville

DRUCKER ZAJDEL STRUCTURAL ENGR

223 W Jackson Blvd Ste 1220
Chicago

DTS AMERICA INC

400 INDUSTRIAL DR
South Elgin

DUKE ENGINEERING

215 SHUMAN BLVD
Naperville

DWS WASTE SOLUTIONS

321 JAMES ST
Geneva

DYNAFORM ENGINEERING

1133 OAK AVE
Evanston

DYNAMECH DESIGN INC

100 S MAIN ST
Elburn

DYNAMIC ENGINEERING & CNSLTNG

735 RED OAK DR
Bartlett

DYNAMIC ENGINEERS & MGMT INC

3021 THEODORE ST
Joliet

DYNOMAX INC

7000 N LAWNDALE AVE
Lincolnwood

DZINIT NOW INC

1463 Hodlmair Ln
Elk Grove Village

E M ENGINEERING CONSULTANTS

830 GLENAYRE DR
Glenview

E ME ENGINEERS CONSULTANT

250 S WACKER DR
Chicago

E SERV LLC

6900 MAIN ST
Downers Grove

EAGLE ENGINEERING LTD

5901 N CICERO AVE
Chicago

EAGLE ENGINEERING LTD

3525 W PETERSON AVE
Chicago

EARTHSAFE SYSTEMS INC

738 S LINCOLN ST
Hinsdale

ECOLOGY & ENVIRONMENT INC

33 W Monroe St Ste 1410
Chicago

EDWARD'S ENGINEERING INC

9316 S KILBOURN AVE
Oak Lawn

EDWARDS ENGINEERING INC

1000 TOUHY AVE
Elk Grove Village

EDWIN HANCOCK ENGINEERING CO

9933 W ROOSEVELT RD
Westchester

EER POWER ENGINEERING INC

9328 FRANKLIN AVE
Franklin Park

EFC INTL

462 CAMDEN DR
Bloomingdale

EGUDA CORP

1098 S MILWAUKEE AVE
Wheeling

EJM ENGINEERING

411 S WELLS ST
Chicago

ELEMECH INC

2275 WHITE OAK CIR
Aurora

ELEMECH INC

1100 MITCHELL RD
Aurora

Elite Construction Company

1010 Jorie Blvd
Oak Brook

EMD TECHNOLOGIES

1419 W Jeffrey Dr
Addison

EN ENGINEERING

7135 JANES AVE
Woodridge

ENCOMPASS TECHNOLOGIES LTD

2542 N RIDGE AVE
Arlington Heights

ENGINEERED FLUID POWER

509 E State Pkwy
Schaumburg

ENGINEERED PRODUCT SVC INC

1952 MC DOWELL RD
Naperville

ENGINEERED SECURITY & SOUND

1275 W ROSEVELT DR
Gilberts

ENGINEERED SUMP SOLUTIONS INC

40 S CLAY ST
Hinsdale

ENGINEERING & MANAGEMENT

1401 BRANDING LN
Downers Grove

ENGINEERING & MGMT SPECIALISTS

1652 Longvalley Dr
Northbrook

ENGINEERING CONSULTANTS LTD

333 W WACKER DR
Chicago

ENGINEERING ENTERPRISES INC

52 WHEELER RD
Sugar Grove

ENGINEERING PROTOTYPE INC

500 Frontier Way
Bensenville

ENGINEERING RESOURCE ASSOC INC

3S701 WEST AVE
Warrenville

ENGINEERING SYSTEMS INC

4215 Campus Dr
Aurora

ENGINEERS SURVEYORS SVC

891 BUSSE RD
Elk Grove Village

ENSR CONSULTING ENGINEERING

27755 DIEHL RD
Warrenville

ENTER STAGE RIGHT

44 TUPELO DR
Naperville

ENVIRONMENTAL DESIGN INTL

33 W Monroe St Ste 1825
Chicago

ENVIRONMENTAL LABORATORY

3923 HOWARD ST
Skokie

EPC INTL INC

1699 WALL ST
Mount Prospect

ESKENAZI FARRELL & FODOR

125 S CLARK ST
Chicago

ESPO ENGINEERING

855 MIDWAY DR
Willowbrook

EUGENE HOLLAND & ASSOC LTD

931 N Plum Grove Rd # A
Schaumburg

EVA ENGINEERING

551 S EUCLID AVE
Elmhurst

EVEREST ENGINEERING

915 W LIBERTY DR
Wheaton

EXTERIOR BUILDING SOLUTIONS

2835 W HOWARD ST
Chicago

EYP MISSION CRITICAL FCLT

200 W ADAMS ST
Chicago

FACILITY GROUP INC

230 W MONROE ST
Chicago

FARNSWORTH GROUP

D
Shorewood

FAST TRACK ENGINEERING

768 Twin Rail Dr
Minooka

FIRE ENGINEERING

40W334 EDNA ST
Bloomingdale

FIVE STAR ENGINEERING CO

2650 W BRADLEY PL
Chicago

FLOOD TESTING LABORATORIES INC

1945 E 87TH ST
Chicago

FLUID ENGINEERING

495 WEGNER DR
West Chicago

FLUIDCLARITY

1144 Lake St Ste 303
Oak Park

FOOTLIK & ASSOC CONSULTING ENG

1548 TOWER RD
Winnetka

FRANK NOVOTNY & ASSOC INC

825 MIDWAY DR
Willowbrook

FRANK P BLEIER PE

2756 N PINE GROVE AVE
Chicago

FRANKLIN ENGINEERING ASSOC INC

110 S BRUNER ST
Hinsdale

FRAUENHOFFER ENGINEERING ASSOC

28835 N Herky Dr Ste 205
Lake Bluff

FREELANCE DESIGN

6N467 BARTON DR
Saint Charles

FX ENGINEERING

240 E OGDEN AVE
Hinsdale

G & M ENGINEERING

2580 BILTMORE CIR
Aurora

G C ENGINEERING

11827 Sea Shadow Bnd

GAJIC ENGINEERING

5501 W IRVING PARK RD
Chicago

GALT ENGINEERING

740 Manor Hill Pl
Sugar Grove

GAMMA TECHNOLOGIES

601 OAKMONT LN
Westmont

GARY HUTTER

3802 MICHAEL LN
Glenview

GASSMAN ENGINEERS INC

35 E WACKER DR
Chicago

Gay-Cierge

Chicago

GEOCON TESTING SVC INC

9370 W Laraway Rd Ste D
Frankfort

GEOPIER FOUNDATION CO

20 DANADA SQ W
Wheaton

Georgia & Company INC

John Hancock Building 875 North Michigan Avenue
Chicago

GHAFARI KSO

360 N MICHIGAN AVE
Chicago

GKN NORTH AMERICA SVCS INC

550 WARRENVILLE RD
Lisle

GLOBE TROTTERS ENGINEERING

100 DIVISION ST
Bensenville

GLOBETROTTERS

300 S WACKER DR
Chicago

GLUECKERT ENGINEERING SVC CO

8329 KILDARE AVE
Skokie

GOLDER ASSOCIATES INC

1809 N MILL ST
Naperville

GOUWENS ENGINEERING CONSULTANT

37 Terrace Ln Apt H
Lake Zurich

GRAEF ANHALT SCHLOEMER & ASSOC

332 S MICHIGAN AVE
Chicago

GRAEF ANHALT SCHLOEMER & ASSOC

8501 W HIGGINS RD
Chicago

GRAHAM CONSULTING INC

908 CENTRAL PARK AVE
Flossmoor

Great Lakes Builders, Inc

7606 W Devon Avenue
Chicago

Great Lakes Lifting Solutions, LLC.

4910 Wilshire Boulevard
Country Club Hills

GREENFIELD PARTNERS

5601 N SHERIDAN RD
Chicago

GREETIS ASSOCIATES STRUCTURAL

134 W SLADE ST
Palatine

GRUMMAN-BUTKUS ASSOC

820 DAVIS ST
Evanston

GTW TECHNOLOGIES INC

620 S WOODLAWN ST
Wheaton

H S NACHMAN & ASSOC INC

223 W JACKSON BLVD
Chicago

H W LOCHNER INC

225 W Washington St # 12
Chicago

HAEGER ENGINEERING LLC

1304 N Plum Grove Rd
Schaumburg

Haggis II Construction

6400 N Northwest Hwy
Chicago

HALVORSON & KAYE

600 W CHICAGO AVE
Chicago

HAMPTON LENZINI & RENWICK INC

380 SHEPARD DR
Elgin

HANS PRECISION TOOL & ENGRG CO

321 SUNSET DR
Wilmette

HANSON PROFESSIONAL SVC

203 N WABASH AVE
Chicago

HANSON PROFESSIONAL SVC INC

18635 WEST CREEK DR STE 1
Tinley Park

HANSON PROFESSIONAL SVC INC

815 COMMERCE DR
Oak Brook

HARDING ESE INC

5440 N CUMBERLAND AVE
Chicago

HAZARD ENGINEERING INC

1144 ENSELL RD
Lake Zurich

HAZARD KEEFE & LEANE

1144 ENSELL RD
Lake Zurich

HBM ENGINEERING GROUP LLC

4415 HARRISON ST
Hillside

HENDERSON & BODWELL CONSULTING

124 W DIVERSEY AVE
Elmhurst

HI-TECH CONTROL CO

36 CENTER DR
Gilberts

HIGHLAND ENGINEERING PC

700 Industrial Dr
Cary

HIGHWAY SAFETY CORP

4650 W ROOSEVELT RD
Chicago

HINSDALE ENGINEERING

514 S GRANT ST
Hinsdale

HIRSCHMANN ENGINEERING USA

165 Commerce Dr Ste 104
Schaumburg

HITITMAN & ASSOC

293 SHEFFIELD DR
Schaumburg

HNTB CORP

111 N CANAL ST
Chicago

HOEKSTRA ENGINEERS

5600 W 120TH ST
Alsip

HOMESTEAD IMPROVEMENTS INC.

26147 N Meadow Ln
Wauconda

HORIZON CONSULTANTS INC

PO Box 484
Joliet

HPD

23563 W MAIN ST
Plainfield

HUCKLEBERRYFINNREPAIR SERVICE

308 E South St
Peotone

Hunt and Hunt Architects

40 Sequoia Road
Hawthorn Woods

HYDRO-THERMO-POWER INC

225 N MICHIGAN AVE
Chicago

Illinois IR

847 S. Randall Rd
Elgin

IMAGING TECHNOLOGY CONSULTANTS

240 CENTER RD
Frankfort

IMPACT ENGINEERING SOLUTIONS

1800 Nations Dr Ste 117
Gurnee

IMS INFRASTURCTURE MGMT SVC

1895 ROHLWING RD
Rolling Meadows

INDUSTRIAL FACILITIES ENGRG

35 LAKEVIEW DR
North Chicago

INGENII LLC

105 N Oak Park Ave. #3C
Oak Park

INNOVATIVE PETROTECH SOLUTIONS

4433 W TOUHY AVE
Lincolnwood

INSPEC INC

8618 W CATALPA AVE
Chicago

INTECH CONSULTANTS INC

1989 University Ln Ste D
Lisle

INTEGRITY TECHNICAL SOLUTIONS

1924 PLAINFIELD RD
Crest Hill

INTEGRITY TECHNICAL SOLUTIONS

9124 PLAINFIELD RD
Brookfield

INTERIORS BY MONIQUE INC

319 N WEBER RD
Bolingbrook

INTERNATIONAL SYSTEMS DESIGN

35297 N HUNT CLUB RD
Gurnee

INTRATEK INC

54 N LIVELY BLVD
Elk Grove Village

INVENIUM INCORPORATED

3317 W EASTWOOD AVE
Chicago

IOTA ENGINEERING

3113 EDGEWOOD PKWY
Woodridge

IPSA CORP

1166 W Grand Ave
Chicago

IRISH CHILDREN'S FUND

835 Sheridan Pl
Downers Grove

IRVING F LIEBERMAN & ASSOC INC

960 RAND RD
Des Plaines

J & C ENGINEERING

3711 N RAVENSWOOD AVE
Chicago

J & C ENGINEERING

1900 N AUSTIN AVE
Chicago

J B ENGINEERING SVC LLC

380 Sterling Rd
Kenilworth

J ENGINEERING & ASSOC

4220 PRESCOTT AVE
Lyons

J MATA D ENTERPRISES INC

1072 GLORIA DR
Elk Grove Village

J MULLER INTL

400 N MICHIGAN AVE
Chicago

J P DONOVAN ENGINEERS

1731 WILDBERRY DR
Glenview

J T General Contracting

141 Woodside Rd
Riverside

JACOB & HEFNER ASSOC

1901 S MEYERS RD
Villa Park

JACOBS EDWARDS & KELCEY INC

1 N FRANKLIN ST
Chicago

JACOBS ENGINEERING GROUP INC

222 S RIVERSIDE PLZ
Chicago

JACOBS ENGINEERING GROUP INC

525 W MONROE ST
Chicago

JACOBSEN-DANIELS ASSOC

10600 W HIGGINS RD
Des Plaines

JAMES ANDERSON CO

920 NORTH SHORE DR
Lake Bluff

JAMES F ROWLAND

3033 N SHERIDAN RD
Chicago

JAMES J BENES & ASSOC INC

950 WARRENVILLE RD
Lisle

JASCO ENGINEERING

4825 EASTWOOD CT
Waukegan

JKL ENGINEERING

884 E RAND RD
Mount Prospect

JM Construction & Remodeling Inc.

3928 N. Osceola
Chicago

JOHN MARTIN STRUCTURAL ENGNRNG

9221 APRIL LN
Mokena

JOHN O LEWIS ENGINEERS & ARCHT

4312 S DR MARTIN LUTHER KIJG
Chicago

JOHNSON LIMITED

4651 N ELSTON AVE
Chicago

JOSEPH KOENNE

1100 W NORTHWEST HWY 209
Mount Prospect

K L CONSULTANTS LTD

1144 BETTE LN
Glenview

K-C & M ENGINEERS & ASSOC INC

2327 VALLEY VIEW LN
Park Forest

K-PLUS ENGINEERING LTD

1979 N MILL ST
Naperville

K.ENG LLC

1017 W Washington Blvd
Chicago

KABBES ENGINEERING INC

1250 S Grove Ave Ste 200
Barrington

KALGEN CONSULTANTS

716 N WISCONSIN AVE
Villa Park

KAM ENGINEERING INC

707 DAVIS RD
Elgin

Kami Farahmandpour

1845 E Rand Rd
Arlington Heights

Kevin Lane | Architect

2637 N Talman
Chicago

KHATIB & ASSOC INC

111 N CANAL ST
Chicago

KIRKEGAARD ASSOCIATES

801 W ADAMS ST
Chicago

KISSSOFT

3719 SPRING GROVE RD
Mchenry

KLAUCENS & ASSOC INC

3239 ARNOLD LN
Northbrook

KLEIN & HOFFMAN INC

150 S WACKER DR
Chicago

Kobez Co.

1813 Vivian Way Ct.

KOENIGSBERG ENGINEERING PC

104 S MICHIGAN AVE
Chicago

KOENIGSBERG ENGINEERING PC

1329 N Sandburg Terrace
Chicago

KOZIOL ENGINEERING SVC

1621 Ogden Ave
Lisle

KRAGH ENGINEERING INC

1953 Conway Ln
Aurora

KROESCHELL ENGINEERING CO

3222 N Kennicott Ave
Arlington Heights

KRW CONSULTING GROUP

5903 N KILPATRICK AVE
Chicago

KRW CONSULTING GROUP LLC

1881 COMMERCE DR
Elk Grove Village

LA FAVE & ASSOC

1870 DEAN ST
Saint Charles

LAICON INC

9914 DERBY LN
Westchester

LAKEWOOD ENGINEERING

4400 W OHIO ST
Chicago

LAKOM ENGINEERING

1325 LOUIS AVE
Elk Grove Village

LaMantia Design & Construction

9100 Ogden Ave
Brookfield

LAND STRATEGIES INC

1700 W IRVING PARK RD
Chicago

LAND TECHNOLOGY INC

3922 MAIN ST
Mchenry

LAND VISION INC

116 W MAIN ST
Saint Charles

LANDMARK ENGINEERING GROUP

1805 N Mill St Ste L
Naperville

Landmark Renovations

235 Bridle Path Circle

Landtech Consultants Inc

13711 W 159th
Homer Glen

LAPPIN GENERAL CONTRACTING

200 ADDISON RD
Riverside

LARAMORE DOUGLASS & POPHAM

20 N Wacker Dr Ste 1500
Chicago

LARSON ENGINEERING INC

1488 BOND ST
Naperville

LEADING EDGE ENGINEERING

4055 Meadow Park Dr
Decatur

LEGACY DESIGNS

480 E ROOSEVELT RD
West Chicago

LEONARD DREAS & ASSOC

888 S Edgelawn Dr Ste 1759
Aurora

Lepjan Drafting Services Inc.

3343 W. Potomac Ave.
Chicago

LFP TECHNOLOGIES

626 MARTIN LN
Deerfield

LINKE & ASSOC INC

14500 W COUNTRY LANE DR
Wadsworth

LINTECH ENGINEERING LLC

500 COVENTRY LN
Crystal Lake

LONCO INC

1979 N MILL ST
Naperville

LORDAHL ENGINEERING CO

1001 S LEWIS AVE
Waukegan

LORRY M TENENBAUM

50 LAKEVIEW PKWY
Vernon Hills

LTK ENGINEERING SVC

300 S WACKER DR
Chicago

LUCO CONSTRUCTION

8813 HIGHWAY 31
Cary

LUTSON

1301 E 75TH ST
Chicago

M C CONSULTING INC

1301 W 22ND ST
Oak Brook

MAC ARTHUR ENGINEERING

245 Vine Ave
Lake Forest

MACAN ENGINEERING CO

1564 N DAMEN AVE
Chicago

Mack Land, LLC

27184 N. Mack Dr.
Wauconda

MACTE C ENGINEERING & CNSL

8745 W HIGGINS RD
Chicago

MACTEC

1200 JORIE BLVD
Oak Brook

MACTEC ENGINEERING/CONSULTING

1121 LAKE COOK RD
Deerfield

MAGNUSSON KLEMENCIC ASSOC INC

111 S WACKER DR
Chicago

MAJOR DIE & ENGINEERING

1352 INDUSTRIAL DR
Itasca

MALCOLM PIRNIE INC

2800 W Higgins Rd Ste 1000
Hoffman Estates

MALHOTRA & MALHOTRA ENGNRNG

419 Elderberry Ln
Streamwood

MAMINIDI RECORDS

520 S YORK ST
Elmhurst

MANHARD CONSULTING LTD

900 WOODLANDS PKWY
Vernon Hills

MARCHRIS ENGINEERING LTD

100 E STATE PKWY
Schaumburg

MARTIN ENGINEERING CO

3336 W COLUMBIA AVE
Lincolnwood

MARTIN INTERNATIONAL SPEC INC

681 EXECUTIVE DR
Willowbrook

MATERIALS ENGINEERING INC

47W605 IC TRL
Maple Park

MATRIX DESIGN INC

1627 Louise Dr
South Elgin

MATRIX ENGINEERING CORP

725 S WELLS ST
Chicago

MB DESIGN & BUILD

3628 N Western Ave
Chicago

MC CLURE ENGINEERING ASSOC INC

2728 GRAND AVE
Waukegan

MC GURR A LTD

955 W LIBERTY DR
Wheaton

MC KEY ENGINEERING & CONSLNTNG

354 E SHADY PINES CT
Palatine

MECHANICAL CONSULTANTS

18250 MORRIS AVE
Homewood

MECHANICAL SERVICE ASSOC CORP

780 MCARDLE DR
Crystal Lake

MEDICAL MURRAY INC

400 N RAND RD
Barrington

MEHANDES ENGINEERING PC

7542 Saint Louis Ave
Skokie

MEISSLER & ASSOC

29W120 BUTTERFIELD RD
Warrenville

MELVIN COHEN & ASSOC INC

555 W JACKSON BLVD
Chicago

MEP CONSULTANTS

351 W CHICAGO AVE
Chicago

MERITCORP

3697 Darlene Ct
Aurora

METAL TECHNOLOGY SOLUTIONS

36W797 RED GATE CT
Saint Charles

METCALF & EDDY

303 E Wacker Dr Ste 600
Chicago

METCO ENGINEERING INC

19231 S BLACKHAWK PKWY
Mokena

METRO DESIGN

769 N Heartland Dr Ste A
Sugar Grove

Michael J Till Associates

915 Michigan Street

MIDLAND STANDARD ENGRG & TSTNG

26575 W COMMERCE DR
Round Lake

MIDWEST CONSTRUCTION CO OF CHICAGO INC

523 W. Old Northwest Hwy
Barrington

MIDWEST ENGINEERING

1000 BUTTERFIELD RD
Vernon Hills

MIDWEST OPERATING ENGR BENEFIT

6140 JOLIET RD
La Grange

MILLENNIA ENGINEERING

200 W 22ND ST
Lombard

MISS JANNEY ELSTNER ASSC INC

10 S LA SALLE ST
Chicago

MORADI MULTI DIMENSION CNSLTNG

6201 W TOUHY AVE
Chicago

MORELAND INTERNATIONAL LTD

16107 S PARK AVE
South Holland

MORGAN ENGINEERING CO

2230 WISCONSIN AVE
Downers Grove

MORRIS ENGINEERING INC

5100 LINCOLN AVE
Lisle

MORRISSEY & ROBINSON

1900 Spring Rd Ste 200
Oak Brook

MOSHE CALAMARO & ASSOCIATES

930 Pitner Avenue
Evanston

MPR ENGINEERING

233 E ERIE ST
Chicago

MVA ENGINEERING CONSULTANT

5128 N ELSTON AVE
Chicago

MWH

175 W JACKSON BLVD
Chicago

NARSAN CORP

6 ROYAL VALE DR
Oak Brook

NATIONAL COUNCIL OF STRUCTURAL

645 N MICHIGAN AVE
Chicago

NAYYAR & NAYYAR INTL

220 S STATE ST
Chicago

NEILSOFT INC

PO Box 850

NEOMEK ENGINEERING

2720 S RIVER RD
Des Plaines

NEOMEK INC

245 Oswald Ave
Batavia

NETNICK ENGINEERING CO

6310 W GROSS POINT RD
Niles

New City Remodeling

4848 N Sheridan Rd
Chicago

NEXUS TECHNICAL SVC

1 TRANSAM PLAZA DR
Villa Park

NORBERTO LASCON

1917 E YORK LN
Wheaton
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