Roads & Traffic

Welcome! Before You Visit Our Offices…

  • View a list of online services for our department and others you can access from your home or office.
  • If you need to visit our offices in the County Administration Building in person, please note:
    • Visitors are required to review a health screening checklist before entering. If you have COVID-19 symptoms and/or known exposure to someone diagnosed with COVID-19 within the past 14 days, please remain at home. 
    • To access our office on the 5th floor, visitors must check in at the Security Desk to receive a visitor badge, and be accompanied by a staff member.

For further questions, call our office at 636-949-7490. Thank you.

Heritage Crossing Slip Ramps

The East-West Gateway Council of Governments (EWGCG) approved a $2.8 million project to build new slip ramps near Heritage Crossing on Route 364 to alleviate headaches caused by traffic congestion and time lost sitting traffic. Learn more about the project.

Route N Study

The Missouri Department of Transportation’s (MoDOT) St. Louis District, in cooperation with the Federal Highway Administration (FHWA), is conducting a National Environmental Policy Act (NEPA) Study being processed as an Environmental Assessment (EA) for an approximately eight-mile stretch of Route N in St. Charles County, Missouri. The goal is to assess the needs and issues of this portion of Route N, as well as the impacts and overall effectiveness of potential alternatives to address those needs. 

St. Charles County is funding the study. Visit the Route N Study website for more information.