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Posted on: August 6, 2023

MoDOT to replace bridge at MO-7 Hwy and I-49

MoDOT Traffic Alert

The Missouri Department of Transportation has begun work to replace the existing MO Route 7 bridge over Interstate 49 and to re-configure the interchange. 

Below you will find additional information about the project and details about various road closures and detours associated with the project.

The bridge structure has reached the end of its service life and needs to be replaced.  The interchange is being re-configured to a (split) Diverging Diamond Interchange to better accommodate existing and future traffic demands.

The project is currently scheduled for May 2023 letting and construction is anticipated to begin in summer 2023. It's currently estimated to cost approximately $9.8 million.

No right-of-way acquisition will be needed for this project.

Click here for preliminary plans, information about diverging diamond interchanges and other important details.

Traffic Impacts

In order to keep I-49 and MO 7 open to traffic during construction, the project will be done in phases.  A short term closure of I-49 and MO 7 with a signed detours will be used to remove the existing bridge. Minimal impacts are expected.

Here are closure dates that we are currently aware of.

New closure for pavement repair beginning Feb. 26

Crews working on the bridge replacement and intersection improvement project on MO-7 South will extend the following lane and ramp closures: 

NEW: COMPLETE CLOSURE: Monday, Feb. 26 through Wednesday, Feb. 28

The I-49 outer road (west side) will be CLOSED from 275th Street to the Wal-Mart Distribution Center entrance for pavement repair. This will be a 24-hour closure.

NEW: Various daily lane closures, Thursday, Feb. 29 and Friday, March 1 

Various daily lane closures on 275th (west of I-49) from the Sapp Brothers entrance to Brookhart Drive/Outer Road for pavement repair. There will be a flagging operation in this area and this will NOT be a complete closure.

Various daily lane closures on the I-49 Outer Road (west side) from 275th Street to the Wal-Mart Distribution Center entrance for pavement repair. This will NOT be a complete closure.

NEW: Intermittent daily lane closures will take place Wednesday, Feb. 28 through Monday, March 4

Intermittent daily lane closures will take place for bridge work on both SB and NB I-49 from Commercial Street to 283rd Street. This work will not take place on March 2-3.

ONGOING: In addition, the following closures will now be in place through March 31 (extended from Jan. 31 due to weather): 

The ramp from MO-7 to southbound I-49 will be closed.

*Detour information: Traffic on NB MO-7 should follow the signed detour and take NB I-49 to Commercial Street, exit and cross the bridge and take the ramp to SB I-49. Traffic on 275th Street/Outer Road should follow the signed detour and take the outer road south to 307th Street.

The ramp from NB I-49 to MO-7 will be closed.

*Detour information: Traffic on NB I-49 should follow the signed detour and take NB I-49 to Commercial Street, exit and cross the bridge and take SB I-49 back to MO-7.

 The WB lane of 275th Street (NB MO-7) will be closed across the bridge.

*Detour information: Traffic wanting to continue west on 275th Street (NB MO-7) or wanting to access SB I-49 should follow the signed detour and take NB I-49 to Commercial Street, exit and cross the bridge and take SB I-49 back to MO-7.

Lane closures scheduled for improvement project at MO-7 South over I-49

Crews working on the bridge replacement and intersection improvement project on MO-7 South will make various daily lane closures on southbound and northbound I-49 for sign construction. Various daily closures will take place from Monday, Jan. 8 through Friday, Feb. 9 (Extended from Jan. 8-19 due to weather.) on both SB and NB I-49 from Commercial Street to just south of MO-7. 

NEW: Ramp closure Tuesday, Feb. 6 through Thursday, Feb. 8 

    The ramp from southbound I-49 to Commercial Street will be CLOSED for sign truss foundation work

Intermittent lane closures through Friday, Feb. 9

    Various daily closures will take place for sign construction on both SB and NB I-49 from Commercial Street to just south of MO-7. Lane closures are anticipated to take place from through Friday, Feb. 9. (Extended from Jan. 8-19 due to weather.) 

In addition, the following closures will now be in place through March 31 (extended from Jan. 31 due to weather): 

    The ramp from MO-7 to southbound I-49 will be closed.

*Detour information: Traffic on NB MO-7 should follow the signed detour and take NB I-49 to Commercial Street, exit and cross the bridge and take the ramp to SB I-49. Traffic on 275th Street/Outer Road should follow the signed detour and take the outer road south to 307th Street.

     The ramp from NB I-49 to MO-7 will be closed.

*Detour information: Traffic on NB I-49 should follow the signed detour and take NB I-49 to Commercial Street, exit and cross the bridge and take SB I-49 back to MO-7.

     The WB lane of 275th Street (NB MO-7) will be closed across the bridge

*Detour information: Traffic wanting to continue west on 275th Street (NB MO-7) or wanting to access SB I-49 should follow the signed detour and take NB I-49 to Commercial Street, exit and cross the bridge and take SB I-49 back to MO-7.

Lane closures scheduled for bridge replacement and intersection improvement project at MO-7 South (275th street) over I-49, Nov. 27-29 (DATES HAVE BEEN UPDATED. WORK WILL NOW BE DONE ON NOV 27-29, INSTEAD OF NOV 20-22.)

Crews working on the bridge replacement and intersection improvement project on MO-7 South over I-49 will make daily lane closures on both SB and NB I-49 from Commercial Street to just north of 307th street for bridge construction. 

Closures will take place Nov. 27-29 at the following locations and times: 

    Daily lane closure on SB I-49 from 6 a.m. until 3 p.m. 

    Daily lane closure on NB I-49 from 9 a.m. until 6 a.m. 

*This will not be a complete closure and crews will have all lanes open by approximately noon on Nov. 22. 

Lane and ramp closures scheduled for bridge replacement and intersection improvement project at MO-7 South (275th street) over I-49, Nov. 17 – Jan. 31

Crews working on the bridge replacement and intersection improvement project on MO-7 South over I-49 will make the following closures for ramp and roadway construction.

Friday, Nov. 17 through Wednesday, January 31

1. The ramp from MO-7 to southbound I-49 will be closed. 

Detour information:

Traffic on NB MO-7 should follow the signed detour and take NB I-49 to Commercial Street, exit and cross the bridge and take the ramp to SB I-49.

Traffic on 275th Street/Outer Road should follow the signed detour and take the outer road south to 307th Street.

2. The ramp from NB I-49 to MO-7 will be closed.

Detour information:

Traffic on NB I-49 should follow the signed detour and take NB I-49 to Commercial Street, exit and cross the bridge and take SB I-49 back to MO-7. 

3. The WB lane of 275th Street (NB MO-7) will be closed across the bridge

Detour information:

Traffic wanting to continue west on 275th Street (NB MO-7) or wanting to access SB I-49 should follow the signed detour and take NB I-49 to Commercial Street, exit and cross the bridge and take SB I-49 back to MO-7.

Lane closure scheduled for WB 275th Street (NB MO-7), Nov. 9

Crews working on the bridge replacement and intersection improvement project on MO-7 South over I-49 will be closing the westbound lane of 275th Street (NB MO-7) just past the ramp to northbound I-49 to set bridge girders, beginning Thursday, Nov. 9 from 7 p.m. until 12 a.m. 

*Detour Information: Traffic heading NB MO-7 wanting to access SB I-49 or wanting to continue on 275th Street must take the ramp from NB I-49 to Commercial Street and then back to SB I-49.

Closure scheduled for the ramp from MO-7 South to NB I-49, Oct. 23-Nov. 13                                                                                                                                    

Crews working on the bridge replacement and intersection improvement project on MO-7 South (275th Street) over I-49 will close the ramp from MO-7 South (275th Street) to northbound I-49 beginning approximately Monday, Oct. 23 through Monday, Nov.13. This complete closure of the ramp will be in place 24 hours a day through Monday, Nov. 13.

Traffic wanting to access NB I-49 from SB MO-7 (EB 275th Street) should follow the signed detour of Brookhart Drive (outer road) south to 307th Street to NB I-49.

Overnight ramp closure scheduled for the ramp from SB I-49 to MO-7, Oct. 11-12

Crews working on the bridge replacement and intersection improvement project on MO-7 South over I-49 will close the ramp from southbound I-49 to MO-7 from approximately 9 p.m. on Wednesday, Oct. 11, overnight, until 5 a.m., on Thursday, Oct. 12.

Overnight ramp closure scheduled for the ramp from SB I-49 to MO-7, Sept. 27

Crews working on the bridge replacement and intersection improvement project on MO-7 South over I-49 will close the ramp from southbound I-49 to MO-7 from approximately 9 p.m. on Wednesday, Sept. 27, overnight, until 5 a.m., on Thursday, Sept. 28.

Lane closures scheduled for MO-7, Sept. 14 – Oct. 13

Crews working on the bridge replacement and intersection improvement project on MO-7 South over I-49 will move into the second phase of construction and will make the following closures for pavement construction.                                                 

Beginning Thursday, Sept. 14  through Friday, Oct. 13 

    The center and right turn lanes on the southbound I-49 exit ramp to MO-7 will be closed for ramp pavement construction.

    MO-7 (SB and NB)/275th Street (EB and WB) will be reduced to one lane in each direction for pavement construction.  

SB and NB I-49 may have intermittent lane closures in the following areas between the following times for construction on the project:                                                                     

    SB I-49 from Commercial Street to just past MO-7 could have intermittent closures from 6 a.m. until 3 p.m. daily

    NB I-49 from north of 307th Street to just past MO-7 could have intermittent closures from 9 a.m. until 6 p.m. daily 

Road closure scheduled for bridge deck work in Cass County, Sept. 18-Nov. 28

Crews will close the I-49 outer road (Rock Haven Rd.), in both directions, from just south of Overpass Road to just past Indian Springs Road from approximately 10 a.m. on Monday, Sept. 18 until 6 p.m. on Friday, Nov. 28. This closure is for bridge deck work on the bridge over the East Fork East Branch South Grand River. All work is weather dependent. Motorists may experience delays in the area. 

Lane closures scheduled for MO-7, Sept. 5-15

Crews working on the bridge replacement and intersection improvement project on MO-7 South over I-49 will make the following closures for temporary pavement construction.              

Beginning Tuesday, Sept. 5 through Friday, Sept. 15 

    Crews will close the right lane of SB MO-7 just before entering and exiting the project area on the bridge.

    Crews will close one of the left turn lanes on the exit ramp from SB I-49 to SB MO-7.

Road closure scheduled for bridge demolition and reconstruction in Cass County, Aug. 9 - Nov. 17

Crews will close the I-49 outer road (Peculiar Drive) in both directions from just south of 237th street to just past the bridge over the East Branch South Grand River for demolition and reconstruction of the bridge. This closure will be in place from approximately 8 a.m. on Tuesday, Aug. 8 until 5 p.m. on Friday, Nov. 17.  All work is weather dependent. Motorists may experience delays in the area. 

Overnight ramp closure scheduled for MO-7 to NB I-49, Sept. 5-6

Crews working on the bridge replacement and intersection improvement project on MO-7 South over I-49 will make the following closure for concrete paving: Beginning Tuesday, September 5, through Wednesday, September 6, crews will close the ramp from MO-7 to northbound I-49 from 10 p.m. until 5 a.m., each night.

Lane closure scheduled for WB 275th Street (NB MO-7), Sept. 5.

Crews working on the bridge replacement and intersection improvement project on MO-7 South over I-49 will make the following closure to set bridge girders. This is a continuation of the work scheduled for August 31. Beginning at approximately 7 p.m. until 11 p.m. Tuesday, Sept. 5, the westbound lane of 275th Street (NB MO-7) will be CLOSED just past the ramp to NB I-49 to set bridge girders.  

*Detour Information: Traffic heading NB MO-7 wanting to access SB I-49 or wanting to continue on 275th Street must take the ramp from NB I-49 to Commercial Street and then back to SB I-49.

Overnight ramp closure scheduled for MO-7 to NB I-49, Aug. 28-31

Crews working on the bridge replacement and intersection improvement project on MO-7 South over I-49 will make the following closure for concrete paving: Beginning Monday, Aug. 28 through Thursday, Aug. 31, crews will close the ramp from MO-7 to northbound I-49 from 9 p.m. until 5 a.m., overnight, Aug. 28-31. 

Lane closure scheduled for WB 275th Street (NB MO-7), Aug. 31

Crews working on the bridge replacement and intersection improvement project on MO-7 South over I-49 will make the following closure to set bridge girders: Beginning at approximately 7 p.m. until 11 p.m. Thursday, Aug. 31, the westbound lane of 275th Street (NB MO-7) will be CLOSED just past the ramp to NB I-49 to set bridge girders.  

*Detour Information: Traffic heading NB MO-7 wanting to access SB I-49 or wanting to continue on 275th Street must take the ramp from NB I-49 to Commercial Street and then back to SB I-49.

Intermittent lane closures scheduled for SB I-49 from Commercial Street to just past MO-7, Aug. 7-25

Crews working on the bridge replacement and intersection improvement project on MO-7 South over I-49 will make intermittent left lane closures on SB I-49 from Commercial Street to just past MO-7 for bridge work in the median. These intermittent lane closures are expected from approximately 7 a.m. until 3 p.m., Aug. 7-25. 

Overnight closure scheduled for ramp from MO-7 to NB I-49, Aug. 10-11

Crews working on the bridge replacement and intersection improvement project on MO-7 South over I-49 will make the following overnight closure: Beginning at approximately 10 p.m. on Thursday, Aug. 10 to 3 a.m. on Friday, Aug. 11, crews will CLOSE the ramp from MO-7 to NB I-49 for overhead sign truss removal.  


Motorists are reminded to slow down and pay attention while driving in work zones. Not all work zones look alike. Work zones can be moving operations, such as striping, patching or mowing. They can also be short term, temporary lane closures to make quick repairs or remove debris from the roadway.

For more information about MoDOT news, projects or events, please visit our website at www.modot.org/kansascity. For instant updates, follow MoDOT_KC on X (Twitter), or share posts and comments on our Facebook at www.facebook.com/MoDOT.KansasCity/. MoDOT Kansas City maintains more than 7,000 miles of state roadway in nine counties. Sign up online for workzone updates or call 888-ASK-MODOT (275-6636).

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