Project Summary
Why is MoDOT undertaking this project?
Between 2011 and 2018, there were three crashes which resulted in four fatalities at the intersection of U.S. Route 69 and Route 116 in Clinton County. Enhancements such as advanced signing were added during those years, but another crash on Jan. 21, 2019 resulted in another fatality.
Following the January 2019 crash, the intersection was reevaluated and further enhancements were made. These included additional rumble strips and adding shoulder barricades with stop-ahead warnings. At that time, safety funding was designated for improvements to this intersection as part of the Statewide Transportation Improvement Program (STIP).
After additional study, a roundabout was selected for this interchange. According to the Insurance Institute for Highway Safety, a roundabout can reduce fatal and incapacitating collisions by 89 percent. Some of the features of a roundabout versus a typical intersection that contribute to this reduction are: reduced traffic speeds, smaller collision angles, and fewer conflict points. A typical intersection may have 20 to 30 conflict points, whereas a roundabout only has eight.
The project, just east of Interstate 35 near Lathrop, is currently set to be constructed in a single construction season in 2022. Three of the four legs of the intersection will remain open throughout much of the construction, but with reduced speeds and turning restrictions. See more details below, including a video on navigating through a roundabout.
On this page you can:
- View the project's proposed planning, design and construction progress
- See the three planned phases of construction, in detail
- Watch a video about roundabouts
- Get answers to frequently asked questions
- Sign up for project-specific updates at the bottom of this page
Districts Impacted
Project Progress
This webpage serves as an online public portal by which input may be received on the planned project. Please review the materials on the page and use the comment form at the bottom to submit any questions, concerns and/or support for the project.
Due to COVID-19 precautions, no in-person public meetings were held for this project. An open-comment period was held Feb. 3 - 19. A live call-in session was held at two different times on Feb. 16, and comments were accepted by phone, mail and via this website through Feb. 19.
The project was part of the August 2021 letting when contractors were able to submit competitive bids on the project.
The Missouri Highways and Transportation Commission considered all bids and awarded the project at their September 2021 meeting to Amino Brothers Co. Inc.
The project currently has an Oct. 4, 2021 Notice to Proceed date in the contract. This is the earliest date a contractor may begin work, unless they request an early Notice to Proceed.
For this project, however, the contractor will not begin work until spring 2022, as construction cannot be sustained through the winter months. We project a start date, with a closure of U.S. Route 69 to the south of the intersection, during or after March 2022.
The project will be conducted in three phases:
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Bypass construction - scheduled for April 12 through May 19, 2022 e)
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Roundabout construction - scheduled for May 19 through July 11, 2022
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South leg construction and bypass removal - scheduled for July 12 through Aug. 19, 2022
See more details about each phase details.
The contractor has one construction season to complete the project, by contract, and all work must be finished by Nov. 1, 2022.

Phase 1
Bypass construction
- Currently scheduled for April 12 - May 19, 2022
- A single-lane bypass for Route 116 traffic will be constructed on the south side of the intersection.
- During Phase 1:
- Route 116 and U.S. Route 69 north of Route 116 will be open to two-way traffic, though lane shifts may be necessary.
- U.S. Route 69 south of Route 116 will be closed just north of 251st Street.
- 251st Street will remain open

Phase 2
Phase 2 - Roundabout construction
- Currently scheduled for May 19 through July 11, 2022
- The roundabout, including truck aprons and islands, will be constructed north of the bypass
- During Phase 2:
- Route 116 traffic will be moved to the single-lane bypass with signals at either end to regulate the flow of traffic.
- Traffic on Route 116 will not be permitted to turn either direction onto U.S. Route 69.
- A 16-foot width restriction will be in place
- Both directions of U.S. Route 69 will be closed, with no access to Route 116
- U.S. Route 69 north of Route 116 will be closed just south of 256th Street.
- 256th Street will remain open
- U.S. Route 69 south of Route 116 will remain closed just north of 251st Street.
- 251st Street will remain open
- U.S. Route 69 north of Route 116 will be closed just south of 256th Street.
- Route 116 traffic will be moved to the single-lane bypass with signals at either end to regulate the flow of traffic.

Phase 3
Phase 3 - South leg construction
- Currently scheduled for July 12 through Aug. 19, 2022
- The south leg of U.S. Route 69, south of the roundabout, will be constructed.
- During Phase 3:
- Route 116 and U.S. Route 69 north of Route 116 will be open to two-way traffic.
- Some shoulder closures may be necessary.
- U.S. Route 69 south of Route 116 will remain closed north of 251st Street
- 251st Street will remain open
- Route 116 and U.S. Route 69 north of Route 116 will be open to two-way traffic.
Project News
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Route 116 and U.S. Route 69 intersection improvement project's second phase begins May 19
ST. JOSEPH, Mo. – The intersection improvement project at Route 116 and U.S. Route 69 in Clinton County is moving into Phase 2 of construction soon. Phase 1 of the project, bypass construction, is now complete.
For Phase 2, Amino Brothers Co., Inc...
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REMINDER: U.S. Route 69 in Clinton County to close for intersection improvement project
ST. JOSEPH, Mo. – The Missouri Department of Transportation reminds motorists of an intersection improvement project beginning next week at U.S. Route 69 and Route 116 in Clinton County. Amino Brothers Co., Inc. of Kansas City, working with MoDOT...
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Upcoming intersection improvement project to begin soon in Clinton County
ST. JOSEPH, Mo. – Construction on the intersection improvement project at U.S. Route 69 and Route 116 in Clinton County is set to begin soon. The Missouri Department of Transportation has contracted with Amino Brothers Co., Inc. of Kansas City to...
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Open comment period ending soon for planned safety improvement project in Clinton County
LATHROP, Mo. – The open comment period is about to end for a planned safety improvement project at the intersection of U.S. Route 69 and Route 116 in Clinton County. The Missouri Department of Transportation is accepting comments through the end of...
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Call-in sessions scheduled for upcoming intersection improvement project in Clinton County
LATHROP, Mo. – The public is reminded that the Missouri Department of Transportation is accepting comments through Feb. 19 on a planned project to improve the safety of the intersection of U.S. Route 69 and Route 116 in Clinton County, just east of...
Frequently Asked Questions
Will MoDOT close the road during construction?
Yes and no.
Route 116 will remain open for the duration of the project, though it will be reduced to a single lane (with traffic signals and a width restriction) during Phase 2.
U.S. Route 69 north of Route 116 will be open in Phases 1 and 3, but closed in Phase 2, just south of 256th Street. (256th Street will remain open).
U.S Route 69 south of Route 116 will be closed for all three phases just north of 251st Street (251st Street will remain open).
Will MoDOT need to acquire any right of way?
Yes. MoDOT has contacted property owners adjacent to the intersection regarding permanent acquisitions, permanent easements and temporary easements.
How long will construction take?
Construction is currently scheduled to begin April 12, 2022 and continue through Aug. 19, 2022.
Who can I contact if I have further questions?
Questions about the project may left by calling 888 ASK MODOT (1-888-275-6636).
How can I stay updated on the project's progress?
Sign up for project-specific updates using the form below.