St. Louis

Columbia Drivers Alerted to Lane Shifts on U.S. Route 63 for Conley Road Underpass Construction

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Published on April 11, 2025
Columbia Drivers Alerted to Lane Shifts on U.S. Route 63 for Conley Road Underpass ConstructionSource: Unsplash/ Mark König

Motorists in Columbia are due for some traffic adjustments today. According to MoDOT, the southbound bridge of U.S. Route 63, part of ongoing construction for the Conley Road underpass, is now complete. As a result, crews will be shifting traffic to allow work on the northbound bridge.

While the everyday scenery for the frequent traveler remains largely unchanged, drivers should be mindful as changes unfold. The usual two lanes of U.S. Route 63 will consolidate into a single lane before transitioning into the shared head-to-head flow, then back to dual lanes. A new wrinkle is the extended single-lane closure for southbound traffic, purposed for the refurbishment of the bridges crossing Interstate 70. Nonetheless, exits and entrances along the route should remain accessible.

This change comes as a heads-up call to motorists to proceed with caution, especially as workers take on the task of eliminating old pavement markings and applying new stripes from the Broadway overpass to the Conley Road underpass. "Motorists are asked to slow down, use extra caution, and have patience when traveling through the work zone," states MoDOT. This advisory is pivotal; it's a safety measure for both the crews on the ground and those navigating the transition.

The evolving U.S. Route 63 underpass at Conley Road is a significant leap forward in Missouri's transportation infrastructure. It signifies the first phase in a series of projects to overhaul the I-70/U.S. Route 63 interchange. As part of MoDOT's comprehensive Statewide Improve I-70 Program, Missouri's forward-looking FY2024 budget earmarks a substantial $2.8 billion in General Revenue for the expansion of I-70. The ambitious endeavor sets out to construct an additional lane in each direction over nearly 200 miles, spanning the stretch from Blue Springs to Wentzville.

All this work hinges on the whims of mother nature, of course, as conditions must align for the plans to proceed without a hitch. Any sudden shift in weather might prompt a revision of the schedule, reminding us that for all our engineering feats, the elements can still hold sway over steel and concrete.