MoDOT - Missouri Department of Transportation

05/27/2026 | Press release | Distributed by Public on 05/27/2026 15:06

Access to and from Boone County Routes O and J to be restricted for several months starting June 1

JEFFERSON CITY, Mo. - Access to and from Boone County Routes O and J (Exit 117) is set to be limited for the next several months for improvements to the interchange.

Beginning Monday morning, June 1, construction crews working with the Missouri Department of Transportation anticipate starting to reconstruct the Routes O and J ramps to and from westbound I-70. After the ramp work is complete, one lane of westbound I-70 traffic will be diverted onto the ramps.

From June 1 to the end of November, the following traffic impacts and detours will be in place:

  • Westbound and eastbound I-70 to and from Route J: CLOSED.
    • Detour: U.S. Route 40/Missouri Route 240.
  • Westbound I-70 to and from Route O: CLOSED.
    • Detour from westbound I-70: Boone County Route BB (Exit 115) to eastbound I-70 to Route O.
    • Detour to westbound I-70: Eastbound I-70 to Exit 121 to westbound I-70.
  • Route J to Route O (north-south access underneath I-70): CLOSED.
    • Detour: U.S. Route 40/Missouri Route 240 to Boone County Route UU.

Motorists are advised to slow down, use extra caution, and follow posted s igns and traffic control devices .

All work is weather-dependent and subject to change.

This work is part of one project in MoDOT's Statewide Improve I-70 Program , Improve I-70: Rocheport to Columbia, which will add a third lane of travel in each direction to the 14-mile stretch of I-70 between the Missouri River Bridge at Rocheport and approximately U.S. Route 63 in Columbia. This $441 million fixed-cost contract includes new pavement on all three lanes of I-70 and will also make interchange improvements at Route J/O, Midway (Route 40), Stadium Blvd., Business Loop 70, Providence Rd., Rangeline St., and U.S. Route 63.

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-mails, 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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MoDOT - Missouri Department of Transportation published this content on May 27, 2026, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on May 27, 2026 at 21:07 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]