Jefferson County, MO – Drivers across Jefferson County will face major changes starting 1 a.m. Monday, November 17, as crews close Route CC at the U.S. 67 intersection for demolition and reconstruction. The Missouri Department of Transportation (MoDOT) says the closure will remain in place through the end of December, impacting thousands of daily commuters.
According to MoDOT, the work will cut off all access to and from Route CC at U.S. 67 during this construction phase. Once the closure ends, traffic patterns will shift to a new design. Drivers on U.S. 67 will begin using newly built interchange ramps to cross Route CC. Route CC drivers will only be able to make right turns onto U.S. 67, and U.S. 67 traffic will only be allowed to turn right onto Route CC.
MoDOT says the next phase of the project begins in early January, when crews are scheduled to remove and lower portions of U.S. 67 as part of the larger I-55 Corridor Improvement effort.
Detours will be in place throughout the closure.
• North of U.S. 67: Drivers should use Gamel Cemetery Road and Pounds Road to reach Veterans Blvd./Route A, then connect to Interstate 55 for access back to U.S. 67.
• South of U.S. 67: Drivers can reach U.S. 67 using Route CC via the MO 110/US 67 interchange.
All detour routes will be clearly marked, MoDOT says. Motorists can follow progress and see upcoming changes on the I-55 Corridor Improvement project website or check real-time traffic conditions using MoDOT’s Traveler Information Map.
This article was produced by a journalist and may include AI-assisted input. All content is reviewed for accuracy and fairness.
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