Missouri Route 94 and Route D Intersection Improvements in St. Charles County

MoDOT is implementing two projects to improve intersection and corridor operations on Route 94 and Route D in St. Charles County in the vicinity of Francis Howell High School. 

Intersection improvements at and near the Route 94 and Route D intersection are being funded in part by a Congestion Mitigation and Air Quality Improvement (CMAQ) grant. Improvements include the following: 

• Providing a second westbound Route 94 through lane at the Route D intersection and extending that approximately 0.25 miles to the east Francis Howell High School entrance. 

• On Route D, add a second left turn lane from southbound Route D to eastbound Route 94. 

• Converting the rear Francis Howell High School entrance into a three-quarter access driveway (left-in; right-in/right-out) while widening Route D to add left-turn lanes at the same intersection. 

• Installing new signals, high visibility crosswalks, and intersection lighting at the intersection of Route 94 and Route D. 

Route 94 Widening includes the following: 

• Widening Route 94 from two lanes to four lanes for approximately 1.0 miles from Route D to the I-64 interchange. 

The project will require additional narrow sections of right of way in select locations along Route 94 and Route D. Temporary construction easements will be required for construction and permanent drainage easements will be needed for future maintenance of stormwater pipes and outlets. This includes minor impacts to the August A. Busch Memorial Conservation Area and the Weldon Spring Conservation Area which will be presented for public input at an upcoming public meeting.