Interstate Drive (Phase I)

This project involves proposed improvements along Interstate Drive from Quail Ridge Park to the intersection of Prospect and Duello roads, including:

  • Widening the existing roadway and adding paved shoulders to provide safer travel and an improved driving surface.
  • Improving drainage facilities and sight distance along the corridor.
  • Adding pedestrian accommodations from Duello and Prospect roads to Quail Ridge Park.
  • Upgrading the intersection at Prospect and Duello roads with a roundabout to improve traffic flow and accommodate continued expansion along the corridor.

The estimated $3.9 million project is funded by the St. Charles County 1/2-cent Transportation Sales Tax, as well as the Federal Highway Administration (FHWA). Oates Associates, Inc., is serving as the design engineering consultant.

Phase I is the final of a five-phase construction plan along Interstate Drive. Phase II included improvements from Quail Ridge Park to Route Z. Phase III included improvements from Route Z to Hepperman Road. Phase IV will extend Interstate Drive from its terminus just east of South Point Prairie Road to Hepperman Road and is currently in the right-of-way acquisition phase. Phase V connects Interstate Drive to the new David Hoekel Parkway west to Schaper Road and was completed in December 2020.

Current Phase

Preliminary plans have been approved by MoDOT. Right-of-way plans are nearly complete. MoDOT has provided some limited review comments but not an official approval yet. Right-of-way acquisition will likely begin sometime in fall 2021.

Updated 8/26/21