Districts Impacted
Project Summary
During the last five years, there have been 1800 crashes, 5x the statewide average, including 20 fatal and/or serious crashes along Route AC from Shackleford Rd to Dunn Rd. Among the reported 1800 crashes, 600 occurred between Parker Spur and Dunn Rd.
(View overall SL Safety Improvements Project Page)
MoDOT’s plan is to reduce crashes, especially those that result in serious or fatal injuries along Route AC. from Dunn Rd. to US Route 67 (Lindbergh Blvd.), and at the intersections of Vaile Ave. and Shackleford Rd., by installing several different types of safety improvements.
Some of these improvements will be familiar, such as retroreflective backplates, LED stop signs, chevrons along curves, high-visibility crosswalks, and median islands between opposing traffic lanes. However, “traffic calming” improvements, such as hardened centerlines within an intersection, may look different to most people coming through this area.
Project Milestones
Meeting with elected officials, emergency responders, local law enforcement, community leaders
4-6 p.m.
Florissant City Hall
955 St. Francois St.
Florissant, MO 63031
What are some of the improvements coming to Route AC?
Modified Right Turn Angle
Right turn lanes at intersections will be adjusted by modifying the island’s corner and straightening the curve using white pavement marking on the shoulder to improve visibility and discourage high-speed turns.
High Visibility Crosswalk
Crosswalks will be upgraded with high visibility striping to help pedestrians be more visible to approaching vehicles.
Hardened Centerline
This improvement discourages high-speed turns by extending a low median island with rumble strips into
the intersection, helping to guide traffic.
Offset Left-Turn Lane
Opposing left turn lanes will be shifted so that vehicles in the opposite left turn lane do not block a driver’s
view of oncoming traffic.
Traffic Calming Improvements
Traffic calming improves a driver’s perception of speed and encourages better driver decision-making. In St. Louis and similar cities such as Milwaukee and Nashville, previous installations of traffic calming measures show that drivers will drive more cautiously, which reduces the frequency and severity of crashes.
The above improvements, combined, are predicted TO REDUCE 54.7% OF CRASHES ANNUALLY within this section of Route AC.
Due to public comments, the bump out islands that were proposed to be added on Route AC have been removed from the project scope.
Frequently Asked Questions (FAQs)
Should I be driving over the hardened centerline?
The hardened centerlines are designed for vehicles to slow down and make a safer turn into the lane they are turning into. Single unit vehicles should not be coming in contact with the hardened centerline. However, they are designed for large trucks to be able to drive over if needed.
North St. Louis County Area Engineer
Tabitha Locke
Title
Area Engineer, North St. Louis County
Department
St. Louis District
Contact Info
Office: (314) 453-1749
Email: Tabitha.Locke@modot.mo.gov
Office: (314) 453-1749
Email: Tabitha.Locke@modot.mo.gov