GHA Proudly Serves:


Government: Municipal, Township, County, State, Federal
Parks & Recreation (Park Districts, Forest Preserves)
Education / Institutions / Campuses (K-12, Higher Education)
Sewer Districts
Water Agencies


Education / Institutions
Financial Institutions
Healthcare / Senior Residences
Hotels / Resorts
Industrial / Business
Places of Worship
Residential / HOAs
Sports and Recreational Facilities

Our Primary Services:

Capital Improvement Projects
Construction Engineering
GIS and Asset Management
Land Surveying
Municipal Engineering / Public Works
Roadway/Highway Engineering
Signal Coordination and Timing (SCAT)

Site Civil Engineering
Traffic Data Collection
Traffic & Parking Impact Studies
Traffic Signals
Water Resources
Water / Wastewater Operations


GHA Elevates GIS Services

GHA is excited to announce a major overhaul and upgrade to our GIS web servers and data hosting environment. After months of research and discussions, GHA is…

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Todd Gordon Named CEO

Todd P. Gordon, P.E., was named Chief executive Office of GHA. Gordon has been with GHA for over 22 years, and has served as Director of Construction and…

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Art Penn Adds President to COO

Arthur J. Penn, P.E. has been named President of GHA and will remain Chief Operations Officer as he has been since 2020. Penn’s focus is on creating and…

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GHA Principals Named

GHA proudly announces that several key leaders who have played important roles in developing GHA’s reputation for excellence and dependability are now…

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Dave Marquardt Received ESOP Award

We celebrate Dave Marquardt for being named The ESOP Association - IL Chapter Employee Owner of the Year! Dave has been an integral part of creating a culture…

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Division Directors Promoted

Gewalt Hamilton & Associates is pleased to announce the promotion of our newest Division Directors. Congratulations to all!

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