Current St. Charles County Construction
- Improve I-70 Warrenton to Wentzville Project
- Improve I-70 in St. Charles, Warren and Montgomery Counties
- I-70 Improvements from Wentzville Parkway to Route Z
- I-64/I-70/U.S. 61 Interchange
- Interstate 64 Westbound Boone Bridge Rehabilitation over the Missouri River
- I-64 North Outer Road/Technology Drive Dardenne Creek bridge replacement project
- Interstate 70 sign replacements in St. Charles County
- 2025 2026 St. Charles County Construction Map (letter size PDF)
- 2025 2026 St. Charles County Construction Map (11X17 size PDF)
Completed Projects
- I-70 Cave Springs to Fairgrounds Design-Build Project
- I-70 Bridge Rehabilitation Project
- Missouri Route 79 Improvements
- Route 94/South Breeze Improvements
- St. Louis Safety Design Build Project
- Route 370 over Route 94 Rehab
- 2020-2022 I-70 Blanchette Bridge Project
- Lake St. Louis Boulevard/I-70 Roundabout
- Interchange Improvements at Route 94, Route 364, Muegge Road
- Route D Box Culvert Replacement Project
- I-70 Planning and Environmental Linkages Study (Wentzville to the Stan Musial V…
Previous St. Charles County Newsletters and Construction Maps (pdf)
- 2024-2025 St. Charles County Construction Map (Letter Size) PDF
- 2024-2025 St. Charles County Construction Map (Tabloid Size) PDF
- 2023 St. Charles County Construction Map (11X17 size format PDF)
- 2023 St. Charles County Construction Map (Letter size format PDF)
- 2022 St. Charles County Construction map
- Spring 2022 Newsletter
- 2021 Summer Newsletter
- Fall 2020 Newsletter
- Summer 2020 Newsletter
- Spring 2020 Newsletter
- Winter 2019 Newsletter