Frontenac Engineering

Bill Berthold

P.E., P.L.S, President

Bill has over 25 years experience as a project manager and civil/structural engineer on over 1,000 projects ranging from site investigations to feasibility studies to new site development, to facility rehabilitation and upgrade. Mr. Berthold has experience with local, regional, and national design standards. His project experience has included work with private developers, municipalities, water and sewer districts, hospitals, and schools, institutions, and state agencies. Mr. Berthold also has extensive construction experience as a field engineer and project manager. His construction experience includes building renovation and new construction, utilities, sewers, municipal facilities, industrial processes, and bridges.

Mr. Berthold’s capabilities include:

  • Project Management
  • Coordination of Public Agency Review and Permitting
  • Rezoning and Public Hearing Representation
  • Site Planning and Site Feasibility
  • Industrial & Manufacturing Facilities
  • Site Design
  • Roadway Design
  • Utility and Sewer Planning and Design
  • Traffic and Parking Design
  • Stormwater Detention Design
  • Floodplain and Hydraulic Analysis
  • Accurate Cost Estimating
  • Construction Coordination



  • Engineers’ Club of St. Louis
  • American Society of Civil Engineers
  • American Institute of Steel Construction
  • American Concrete Institute
  • Society of American Military Engineers
  • Missouri Society of Professional Land Surveyors
  • American Congress of Surveying & Mapping


  • BSCE, University of Missouri – Columbia 1987
  • BS Geology, University of Missouri – Columbia 1985