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Mike Erdtmann, PE
Principal | Regional Manager | Roadways

Mike is the regional office lead for GBA’s Chesterfield office and is a Principal within the Transportation Market. He provides leadership and oversight for our St. Louis region, offering full-service, multi-disciplined civil engineering solutions for local municipalities and DOTs.

Mike has been involved in a variety of transportation design projects for area agencies and MoDOT and IDOT. His experience includes corridor studies, design of roadways, highways, interchanges, streetscape enhancements, bike and pedestrian facilities, traffic studies, safety analysis and he is proficient in 3-D design techniques using CAD. Mike has extensive experience in the field of transportation, which includes lead design and project management.

Professional Highlights

  • 19+ years of experience – Worked at GBA since 2005
  • PE: MO, IL

Office Location

  • St. Louis, MO



  • Bachelor of Science in Civil Engineering from the University of Missouri – Columbia
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