05/21/2026 | Press release | Distributed by Public on 05/21/2026 13:56
JEFFERSON CITY, Mo. - On schedule, the new roundabout at Conley Road and Business Loop 70 in Columbia is complete, and the road has reopened to all traffic.
Construction crews, working with the Missouri Department of Transportation, closed Conley Road at the intersection with Business Loop 70 on March 23 for roundabout construction. All businesses in the area remained accessible during the closure, which was in place through Thursday afternoon, May 21. The new roundabout is now in use, but motorists should continue to use caution as additional sign work is completed.
The roundabout provides a safer and more efficient intersection. Compared to a signalized intersection, roundabouts have fewer conflict points, which, along with slower speeds and calmer traffic, can translate into as much as 76 percent fewer crashes and fewer crash-related injuries.
All work is weather-permitting and subject to change.
MoDOT asks all motorists to work with us by buckling up, putting your phone down, obeying all traffic signs, and slowing down and moving over in work zones.
This work is part of the first project in MoDOT's Statewide Improve I-70 Program, Improve I-70: Columbia to Kingdom City, which will add a third lane of travel in each direction to the 20-mile stretch of I-70 between Columbia) and Kingdom City. This $405 million fixed-cost contract includes new pavement on all three lanes of I-70 and will also make interchange improvements to the I-70 interchanges at U.S. Route 63 and U.S. Route 54.
Missouri's FY2024 budget, approved through the state legislative process and governor, provides $2.8 billion in General Revenue to build a third lane of I-70 across the state. The program will plan, design, construct, reconstruct, rehabilitate, and add a third lane in each direction on nearly 200 miles of I-70, from Blue Springs to Wentzville. For more information on the Improve I-70 Program and to sign up for program e-updates, visit http://www.modot.org/improvei70 .
For more information, call MoDOT at 888-ASK-MODOT (275-6636) or visit www.modot.org . To receive the latest statewide news and text alerts, signup for e-updates .
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