U.S. Route 61 and U.S. Route 67 Two-Way Left Turn Lane (TWLTL) Construction in Jefferson County

Why is MoDOT temporary reducing lanes from this area?

Currently, there are two lanes in each direction, northbound and southbound. During construction, MoDOT will shift over traffic to allow one northbound and southbound lane and add a temporary center turn lane. Once construction is complete, there will be two northbound and two southbound lanes again, with a permanently added center turn lane (TWLTL).

Why did work start on this area on Route 61/67 with the Interstate 55 Corridor Upgrades project still under construction?

This project was not allowed to begin until the southern limits of the I-55 project were completed. As the southern part of the I-55 project is now completed, motorists will see the barrier wall removed and lanes are back to full width.

Will heavy truck loads still be able to pass through?

Some heavy trucks will still be permitted, provided they meet all oversize/overweight permit requirements. The work zone specifics are shared with MoDOT's multimodal department, which works directly with the oversized and overweight trucks.  These trucks receive permits specifying the routes they must take to reach their destination.  With the specifics of the work zone, and with our multimodal department working with each permit, they will be able to determine if that truck is unfit to travel through.  

Will the local businesses along this route will customers still be able to access?

While this project was not allowed to begin until the Southern section of the I-55 project was completed, our Right-of-Way (land) Department works with the affected businesses along the corridor.  Access to entrances along the corridor will be maintained to keep access open during the project.  If there are any businesses that are concerned or would like to speak with us, we are happy to speak with them.  

Is this project a part of the Interstate 55 Corridor Upgrades?

Adding the turn lane is not part of the I-55 Corridor Upgrades; this is a separate project that addresses safety concerns by adding a two-way left-turn lane, replacing drainage structures, and addressing aging pavement.  Adding a two-way left-turn lane provides safety benefits by reducing crashes, with a heavy focus on rear-end crashes. This project cost $3.98 million. 

How much will the project cost?

Construction cost is estimated at $3.98 million.