Route N - Phase 3A

This project involves the realignment of the intersection of Route Z and Route N. Proposed improvements include:

  • New realigned intersection of Route Z and Route N.
  • New signal to be installed at new realigned intersection.
  • Widen road for separate left and right turn lanes in all directions.

The project is funded by St. Charles County’s ½-cent Transportation Sales Tax and with Federal Highway Administration (FHWA) Congestion Mitigation and Air Quality (CMAQ) Improvement Program funding. The engineering design consultant is HR Green, Inc. The project is estimated to cost approximately $3.3M.

Contact Chris Bostic, Engineering Design Manager, at 636-949-7305 or, with questions about the project. 

Project Information

Conceptual Project Map (PDF)

Current Phase

Right-of-Way Plans have been approved by MoDOT. Appraisal work is finished and initial offers have all been made. ROW acquisition is continuing. Several parcels have been acquired, with the outstanding ones going through the condemnation process. The case has been filed and the court hearing was held on June 30th. Construction will follow by late summer 2022.

Updated 7/7/22

Project Location Map