Route 94, Route 364, Muegge Road Interchange Improves Traffic Movement


  • Local Governments
  • State Agencies


  • Bridges + Structures
  • Engineering
  • Innovative Geometry
  • Roadways + Interchanges
  • Traffic + Safety
  • Transportation


  • St. Charles County, Missouri

The Route 94, Route 364, and Muegge Road Interchange project will add capacity, safety, and mobility enhancements at the current interchange in St. Charles County, Missouri. Construction recently started on the improvements that when complete, will add traffic movements to Route 94 and Route 364 that previously did not exist. Previously, the interchange lacked access for the following movements:

  • East and westbound Route 94 to northbound Muegge Road
  • Southbound Muegge Road to east and westbound Route 94

The Muegge Road Interchange project consists of an innovative Diverging Diamond Interchange (DDI) with a signalized condition at the north end of the Route 94 bridge. To accommodate future travel volumes, the bridge over Route 94 will be widened to the east to accommodate another southbound lane. Adjacent roadway improvements support the new traffic movements. A lane was added to both eastbound and westbound Route 94 from Muegge Road to Interstate 70, which completed MoDOT’s goal of providing 3 through lanes on Route 94.

The project is a joint effort between MoDOT, St. Charles County, and the City of Saint Charles, with each entity providing funding toward the ultimate goal. Cost Share funding, STP funding, Road Board funding, and local funding are all being used to make this project a reality.

MoDOT is the project sponsor and has implemented an innovative development strategy around the HR Green Design Team, making them the Project Management Consultant (PMC) for the project. This means HR Green serves as the internal Project Manager just as a MoDOT PM sitting at the District office would, interfacing with the Central office, and other District staff, hosting Core Team meetings, and performing other administrative duties on behalf of the District to complete the design. Additionally, the Design Team serves as the project’s Resident Engineer and administers the construction contract.

The resulting interchange will provide direct access for all movements and reduce adverse travel for motorists traveling to and from Muegge Road, without degrading the existing MoDOT or adjacent transportation system.

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