Engineering Resource Associates
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John Mayer - Vice President

John Mayer serves as the Vice President of Engineering Resource Associates (ERA). John has over 29 years of engineering experience and has worked for ERA for the last 18 years.  During John’s time at ERA he has actively served as Project Manager and Lead Project Engineer for a wide variety of projects including streetscape, roadway, traffic signal, recreational, institutional, infrastructure and stormwater projects for local municipalities, counties, and state agencies throughout Illinois.
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John has specialized design expertise in traffic signal, roadway geometrics, street lighting, and streetscape project he manages. He has extensive experience with various state and federal funding sources including: ARRA, ITEP, MFT, AASHTO, CMAP, STP, CMAQ, TCM and OSLAD funds.

John frequently speaks at the Annual IAPD/IPRA Conference and at the IAFSM conference.  He is an active member of the American Public Works Association (APWA) Southwest Branch, Illinois Association for Floodplain and Stormwater Management (IAFSM),  the Institute of Transportation Engineers (ITE) and the US Green Building Council (USGBC). He received his Bachelor of Science degree in Civil Engineering from the University of Wisconsin-Milwaukee in 1986.

​John resides in Plainfield, Illinois with his wife, Sue. His four children are young adults now and he loves to keep busy by staying involved in each of their active lives and taking family trips to their cabin in Wisconsin.  He continues to cheer for the Packers and hold onto his cheesehead roots.  On occasion some have even detected his Wisconsin dialect! Ya hey dar.
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Click For More Team Members

Jon Green - President

Marty Michalisko - Water Resources Project Manager

Erin Pande - Environmental Project Manager

Jake Wolf - Structural Project Manager

Brian Dusak - Transportation Project Manager

Melissa Lange - Structural Project Manager

Patrick Keefe - Transportation Project Manager

Tiffany Engelhardt - Marketing Director

Mike Maslowski - Water Resources Project Manager

Nick Varchetto - Site Development Project Manager

Tim Martinek - Survey Manager

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WARRENVILLE

3S701 West Avenue
Suite 150
Warrenville, IL 60555

Phone:
​630.393.3060


CHAMPAIGN

2416 Galen Drive
Champaign, IL 61821

Phone:
​217.351.6268


CHICAGO

10 S. Riverside Plaza
Suite 875

Chicago, IL 60606

Phone:
​312.470.6044


MILWAUKEE

342 N. Water Street
Suite 600
​Milwaukee, WI 53202

Phone:
​ 414.238.9189


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Office Hours: 8:00 am - 5:00 pm