Mercer U.S. Route 136 Grand River Overflow Bridge project update

ST. JOSEPH, Mo. - Louis-Company, LLC, in coordination with the Missouri Department of Transportation, is working on a project to replace the deck of the Mercer County U.S Route 136 Grand River Overflow Bridge, west of Princeton. The contractor is nearing completion of the south side of the bridge and plans to switch traffic on September 14 and 15 to begin construction on the north side. The project was scheduled to be completed by October 2026, but due to contractor delays, the bridge is now expected to reopen in mid-November 2026.

Traffic Impacts:

• During the traffic switch: while the contractor is moving from the south to the north side of the bridge on September 14 and 15, motorists will experience intermittent closures of up to 15 minutes at the bridge work zone. Contractor crews will be flagging/directing traffic during these times.
• During construction: the bridge will continue to be narrowed to one lane with signals directing traffic. A 15-foot width restriction will remain in place.

For more information about this project, visit: https://www.modot.org/projects/missouri-route-136-bridge-deck-replacement-mercer-county.

All work is weather-permitting, and schedules are subject to change. MoDOT asks drivers to work with us by always buckling up, keeping your phones down, slowing down and moving over in work zones. Know before you go and check what work zones you might encounter at traveler.modot.org.

Get project and work zone news straight to your email by signing up for eUpdates. Information is also available 24/7 by calling 888-ASK-MODOT (275-6636) or visiting www.modot.org/northwest.

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