About Us
EDSI Engineering
Since our foundation in 1995, Engineering Design Source Inc. (EDSI) has completed more than 2,000 civil engineering and surveying projects in the Bi-State area.
EDSI operates with a team of 55+ engineers, surveyors, construction inspectors, and technicians based in Chesterfield, Missouri, and Collinsville, Illinois. Our staff includes 33% minorities/women.
We are a certified Minority Business Enterprise (MBE) and Disadvantaged Business Enterprise (DBE), and proud members of the American Council of Engineering Companies (ACEC) in both Missouri and Illinois.
Our diverse client base includes:
- Missouri Department of Transportation (MoDOT)
- Illinois Department of Transportation (IDOT)
- St. Louis County
- City of St. Louis
- St. Louis Lambert International Airport
- Metropolitan St. Louis Sewer District (MSD)
- Illinois American Water (ILAW)
- Ameren
- University of Missouri–St. Louis
- Missouri Botanical Garden
- Various architectural/engineering firms across MO and IL
Our Mission
At EDSI, our mission is to provide our clients with the highest level of excellence in our engineering and surveying services. We deliver customer satisfaction by focusing on timeliness, paying attention to details, and producing quality work. We foster the highest standards of professionalism, cooperation, and enthusiasm in our relationships with our fellow staff members, clients, and subcontractors.
OUR VALUES
OUR CERTIFICATIONS
Missouri
Disadvantaged Business Enterprise (DBE)
Minority Business Enterprise (MBE)
Licensed Professional Engineering Corporation
Licensed Professional Land Surveying Corporation
Illinois
Disadvantaged Business Enterprise (DBE)
Minority Business Enterprise (MBE)
Licensed Professional Engineering Design Firm
Licensed Professional Land Surveying Firm
City of St. Louis
Licensed Business
“THANK YOU FOR YOUR INPUT. WE’LL INCLUDE YOUR COMMENTS WITH OUR EVENTUAL REPORT BACK TO PARSONS ON AUG. 29TH. WE APPRECIATE YOU SUPPORT AND DILIGENCE. YOU ARE THE ONLY ‘I-64 SPECIALIST PARTNER’ THAT HAD THE TIME AND AMBITION TO RESPOND TO OUR REQUEST. THAT IS A CREDIT TO YOU AND YOUR WORK ETHIC. THANKS AGAIN FOR ALL YOU DO.”