St. Louis Work Zones August 28-September 3

ST. LOUIS — The Missouri Department of Transportation will limit work on interstates and state highways on Friday, Aug. 29 starting at noon through Tuesday, Sept. 2 at 6 a.m. to help motorists travel around the state during the Labor Day holiday weekend.

Traffic will still be restricted in areas where there are permanent barriers.

Drivers who use Route 21 (Tesson Ferry Road) north of Green Park Road are to be aware of changing traffic conditions as MoDOT will shift the current lane closures in each direction over Gravois Creek and Grant’s Trail on Tuesday, Sept. 2, at 6 a.m.

Crews will continue to keep one lane closed in each direction, but traffic will be moved to the southbound lanes between Tiffany Square Park and Green Park Road/Musick.

For real-time roadway weather conditions, go to http://traveler.modot.org/map. For real-time traffic, visit Welcome to Gateway Guide! | Missouri Department of Transportation (modot.org). All work is subject to change and may be shifted due to inclement weather.

Motorists should be aware of the following ongoing closures:

• I-55, St. Louis City, one southbound lane closed from I-44 to north of Bates and two southbound lanes closed north of Bates to north of Weber through 2025.
• I-55, St. Louis City and County, one northbound lane closed from north of Reavis Barracks to north of Bayless and two northbound lanes closed from north of Bayless to Virginia through 2025.
• I-55, St. Louis City, the ramp from Virginia to southbound is closed through December 2025.
• I-55, St. Louis City, the ramp from southbound to Loughborough and the Loughborough on-ramp to southbound will be closed through December 2025.
• I-55, St. Louis City, the ramp from Lafayette/Truman to southbound is closed through 2025.
• I-55, St. Louis City, the ramp from Germania to northbound is closed through 2025.
• I-55, St. Louis City, the ramp from southbound to Germania is closed through 2025.
• I-40, St. Louis County, Conway Rd. closed at North Outer 40 intersection.
• I-270, St. Louis, County, one northbound lane closed at I-44.
• I-270, St. Louis County, various northbound and southbound lanes narrowed between I-64 and Olive through late 2025.
• I-270, St. Louis County, Conway closed under I-270 through fall 2025.
• I-270, St. Louis County, westbound exit ramp to Riverview Drive closed.
• I-270, St. Louis County, on ramp from Riverview Drive to westbound I-270 closed.
• I-270, St. Louis County, the ramp from eastbound to southbound I-170 will be closed through September.
• Route 21, St. Louis County, one northbound and southbound lane closed between Gravois Creek and Grant’s Trail.
• Route 21, St. Louis County, one lane northbound and southbound will be closed Musick to Tesson Creek Estates through late 2025.
• Route 67, St. Louis County, one northbound and southbound lane close over Coldwater Creek.
• Route 67, St. Louis County, northbound and southbound Route 67 loop ramps to Route D closed. Route D westbound and eastbound loop ramps to Route 67 closed.
• Route 67, St. Louis County, one northbound and one southbound lane closed at Route D.
• Route 67, St. Louis County, one lane closed from Washington to Ferdinand.
• Route 141, St. Louis County, one southbound lane closed at I-64 through 2025.
• Route 141, St. Louis County, starting at 9 p.m. Tuesday, Sept. 4, one northbound lane closed at I-70.
• Route 141, St. Louis County, starting at 9 p.m. Tuesday, Sept. 4, one southbound lane closed north of I-70 to just south of I-70.
• Route N, St. Louis County, one lane closed southbound from south of I-70 to Augusta.
• Route N, St. Louis County, one lane permanently closed northbound from Route 115 to Bermuda.
• Route N, St. Louis County, one northbound lane closed from Signal Hill Dr. to Bernhardt Ave.
• Route AC, St. Louis County, one northbound and one southbound lane closed at Maline Creek (just south of Lucas & Hunt).
• I-64, St. Charles County, two westbound lanes closed on the Daniel Boone Bridge over the Missouri River. One westbound lane remains on the westbound bridge and two westbound lanes shifted to the eastbound bridge through December 2025.
• I-64, St. Charles County, North Outer Road/Technology Drive bridge closed through 2025.
• Route 61, St. Charles County, the ramp from southbound to westbound I-70 closed through October.
• Route K, St. Charles County, one lane on and the ramp to eastbound I-64 closed through September.
• Route 100, Franklin County, one eastbound lane closed on the Eastern Missouri Railroad bridge near Villa Ridge through early September 2025.
• I-55, Jefferson County, intersection of I-55 and Route 67 closed.
• I-55, Jefferson County, one lane of northbound/southbound I-55 closed from Route 67 to Route Z.
• I-55, Jefferson County, three left turn lanes closed at McNutt under the interstate. Traffic will move to the outside lanes. Drivers will be able to make a left turn onto the interstate ramp.
• I-55, Jefferson County, the ramp from southbound Route 67 to southbound I-55 will be closed through September 2025.
• I-55, Jefferson County, one lane closed on Herky Horine Road under southbound through October.
• Route 67, Jefferson County, one southbound lane closed at I-55.
• Route Z, Jefferson County, three middle lanes closed in the center of Route Z. All traffic is pushed to the outside lanes.
• Route MM, Franklin County, closed between Route T and Coleman Rd.

Please see the list of daily road closures, weather permitting:

Thursday, August 28

• I-64, St. Louis City, 9 a.m. to 3 p.m, the ramp from Market St. to westbound I-64 closed.
• I-64, St. Louis City, 6 a.m. to 3 p.m., the 14th entrance ramp to westbound I-64 closed.
• I-70, St. Louis City, 9 a.m. to 3 p.m., one eastbound/westbound lane closed on the Mississippi River Bridge.
• I-170, St. Louis County, 6 a.m. to 5 p.m., one lane closed on Pershall under I-270 from Hanley to Hazelwood Avenue.
• Route 21, St. Louis County, 6 a.m. to 2 p.m., one northbound and southbound lane closed between I-270 and Schuessler.
• Route 21, St. Louis County, 6 a.m. to 2 p.m.one northbound and southbound lane closed between Lindbergh and Green Park.
• Route 61/67, St. Louis County, 8 a.m. to 3 p.m., one southbound and northbound lane closed from the Conway/German Intersection to Conway Road.
• Route 100, St. Louis County, 7 p.m. to 6 a.m., one eastbound and westbound lane closed between Highway OO and Booness Lane. A pilot car will help direct traffic through the work zone.
• Route 109, St. Louis County, 7 p.m. to 5 a.m., one northbound and southbound lane closed between Route cc and Clayton.
• Route 115, St. Louis County, 7 p.m. to 5 a.m., one lane closed eastbound and westbound from I-170 to Hanley.
• Route 141, St. Louis County, 8 p.m. to 6 a.m., one lane closed northbound/southbound between Casino Center Drive and Rider Trail South.
• Route 340, St. Louis County, 8 p.m. to 6 a.m., one eastbound and westbound lane closed between I-270 and Old Ballas.
• Route 340, St. Louis County, 9 a.m. to 3 p.m., one eastbound and westbound lane closed between Warson and I-170.
• Route AB, St. Louis County, 7 a.m. to 3 p.m., one lane closed between Chasselle and Ladue Pine Woods Place. Flaggers will direct traffic through the work zone.
• Route AB, St. Louis County, 7 a.m. to 3 p.m., one lane closed eastbound and westbound between I-270 and Route 141. Flaggers will direct traffic through the work zone.
• I-64, St. Charles County, 8 p.m. to 5:30 a.m., one eastbound lane closed from I-70 to Route K.
• I-64, St. Charles County, 8 p.m. to 7 a.m., one westbound lane closed from Route K to I-70.
• I-70, St. Charles County, 9 p.m. to 5:30 a.m., one eastbound lane closed from Wentzville Parkway to Route A.
• I-70, St. Charles County, 9 p.m. to 5:30 a.m., one lane closed westbound from Route Z to Route A.
• Route 370, St. Charles County, 9 a.m. to 3 p.m., one eastbound lane closed over the Missouri River.
• Route Y, St. Charles County, 9 a.m. to 3 p.m., one lane closed at White Branch.
• I-55, Jefferson County, 9 p.m. to 5 a.m., one southbound lane closed from McNutt to Route A.
• I-55, Jefferson County, 9 p.m. to 5 a.m., southbound I-55 ramp to Route A closed.
• Route A, Jefferson County, 8 p.m. to 5 a.m., the bridge over I-55 will be closed in one direction (eastbound and westbound) at a time.
• Route 50, Franklin County, 6 p.m. to 5 a.m. and 8 a.m. to 3 p.m., one eastbound and westbound lane closed between Independence Drive to Route BB.
• Route 50, Franklin County, 6 p.m. to 5 a.m. and 8 a.m. to 3 p.m., one eastbound and westbound lane closed from Gasconade/Franklin County line to Route C.
• Route 100, Franklin County, 7 p.m. to 5 a.m. and 8 a.m. to 3 p.m., one eastbound/westbound lane closed from Route OO to I-44 Washington exit. Flaggers will direct traffic through the work zone.
• Route KK, Franklin County, 7 a.m. to 5 p.m., one lane closed between Route C and Route 185. Flaggers will direct traffic through the work zone.
• Route MM, Franklin County, 6 a.m. to 4 p.m., one lane closed between Beauty Dr. and Purina Farms.
• Route MM, Franklin County, 8 a.m. to 3 p.m., one eastbound/westbound lane closed between Route 30 and Hillsboro House Springs Rd. Flaggers will direct traffic through the work zone.

Friday, August 29

• I-64, St. Louis City, 6 a.m. to 12 p.m., the 14th entrance ramp to westbound I-64 closed.
• I-70, St. Louis City, 9 a.m. to 3 p.m., one eastbound/westbound lane closed on the Mississippi River Bridge.
• I-170, St. Louis County, 6 a.m. to 5 p.m., one lane closed on Pershall under I-270 from Hanley to Hazelwood Avenue.
• Route 21, St. Louis County, 6 a.m. to 12 p.m., one northbound and southbound lane closed between I-270 and Schuessler.
• Route 21, St. Louis County, 6 a.m. to 12 p.m.one northbound and southbound lane closed between Lindbergh and Green Park.
• Route 61/67, St. Louis County, 8 a.m. to 12 p.m., one southbound and northbound lane closed from the Conway/German Intersection to Conway Road.
• Route 255, St. Louis County, 8 p.m. to 5 a.m., one westbound lane closed from Koch Rd. to I-55.
• Route 340, St. Louis County, 9 a.m. to 12 p.m., one eastbound and westbound lane closed between Warson and I-170.
• Route AB, St. Louis County, 7 a.m. to 12 p.m., one lane closed between Chasselle and Ladue Pine Woods Place. Flaggers will direct traffic through the work zone.
• Route AB, St. Louis County, 7 a.m. to 12 p.m., one lane closed eastbound and westbound between I-270 and Route 141. Flaggers will direct traffic through the work zone.
• Route 50, Franklin County, 6 p.m. to 5 a.m. and 8 a.m. to 12 p.m., one eastbound and westbound lane closed between Independence Drive to Route BB.
• Route 50, Franklin County, 6 p.m. to 5 a.m. and 8 a.m. to 12 p.m., one eastbound and westbound lane closed from Gasconade/Franklin County line to Route C.
• Route 100, Franklin County, 8 a.m. to 12 p.m., one lane closed between Route OO and Washington I-44 exit.
• Route MM, Franklin County, 6 a.m. to 4 p.m., one lane closed between Beauty Dr. and Purina Farms.
• Route MM, Franklin County, 8 a.m. to 12 p.m., one eastbound/westbound lane closed between Route 30 and Hillsboro House Springs Rd. Flaggers will direct traffic through the work zone. 

Saturday, August 30

• No scheduled work zone closures.

 Sunday, August 31

• No scheduled work zone closures.

 Monday, September 1

• No scheduled work zone closures.

 Tuesday, September 2

• I-64, St. Louis City, 9 a.m. to 3 p.m, the ramp from Market St. to westbound I-64 closed.
• I-64, St. Louis City, 6 a.m. to 2 p.m., one eastbound lane closed from 22nd to 6th St.
• I-64, St. Louis City, 9 a.m. to 3 p.m., one westbound lane closed from Broadway to 22nd
• I-170, St. Louis County, 9 a.m. to 3 p.m., one lane of Lackland closed over I-170. Flaggers will direct traffic through the work zone.
• I-170, St. Louis County, 8:30 p.m. to 5 a.m., one southbound lane closed from Scudder Road to Route 115 and one lane and ramp under the westbound I-70 overpass closed.
• I-170, St. Louis County, 9 p.m. to 6 a.m., one northbound lane closed from Scudder Road to Route 115 and one lane and ramp under the eastbound I-70 overpass closed.
• I-170, St. Louis County, 6 a.m. to 5 p.m., one lane closed on Pershall under I-270 from Hanley to Hazelwood Avenue.
• Route 21, St. Louis County, 6 a.m. to 2 p.m., one northbound and southbound lane closed between I-270 and Schuessler.
• Route 21, St. Louis County, 6 a.m. to 2 p.m.one northbound and southbound lane closed between Lindbergh and Green Park.
• Route 61/67, St. Louis County, 8 a.m. to 3 p.m., one southbound and northbound lane closed from the Conway/German Intersection to Conway Road.
• Route 100, St. Louis County, 7 p.m. to 6 a.m., one eastbound and westbound lane closed between Highway OO and Booness Lane. A pilot car will help direct traffic through the work zone.
• Route 109, St. Louis County, 7 p.m. to 5 a.m., one northbound and southbound lane closed between Route cc and Clayton.
• Route 115, St. Louis County, 7 p.m. to 5 a.m., one lane closed eastbound and westbound from I-170 to Hanley.
• Route 141, St. Louis County, 7 p.m. to 5 a.m., up to two lanes closed between Conway and South Woods Mill Rd.
• Route 340, St. Louis County, 8 p.m. to 6 a.m., one eastbound and westbound lane closed between Lindbergh and I-170.
• Route 340, St. Louis County, 8 p.m. to 6 a.m., one eastbound and westbound lane closed between Warson and I-170.
• Route 340, St. Louis County, 9 a.m. to 3 p.m., one eastbound and westbound lane closed between Warson and I-170.
• Route 366, St. Louis County, 6 a.m. to 3 p.m., one westbound lane closed from Laclede Station Rd. to Grant.
• Route AB, St. Louis County, 7 a.m. to 3 p.m., one lane closed eastbound and westbound between I-270 and Route 141. Flaggers will direct traffic through the work zone.
• I-64, St. Charles County, 8 p.m. to 5:30 a.m., one eastbound lane closed from I-170 to Route K.
• I-64, St. Charles County, 8 p.m. to 7 a.m., one westbound lane closed from Route K to I-70.
• I-70, St. Charles County, 9 p.m. to 5:30 a.m., one eastbound lane closed from Wentzville Parkway to Route A.
• I-70, St. Charles County, 9 p.m. to 5:30 a.m., one lane closed westbound from Route Z to Route A.
• Route 370, St. Charles County, 9 a.m. to 3 p.m., one westbound lane and bike path closed on the Discovery bridge over the Missouri River.
• Route P, St. Charles County, 9 a.m. to 3 p.m., one closed at Eron Branch. Flaggers will direct traffic through the work zone.
• I-55, Jefferson County, 9 p.m. to 5 a.m., one southbound lane closed from McNutt to Route A.
• I-55, Jefferson County, 9 p.m. to 5 a.m., southbound I-55 ramp to Route A closed.
• Route A, Jefferson County, 7 p.m. to 5 a.m., the bridge over I-55 will be closed in one direction (eastbound and westbound) at a time.
• Route 50, Franklin County, 6 p.m. to 5 a.m. and 8 a.m. to 3 p.m., one eastbound and westbound lane closed between Independence Drive to Route BB.
• Route 50, Franklin County, 6 p.m. to 5 a.m. and 8 a.m. to 3 p.m., one eastbound and westbound lane closed from Gasconade/Franklin County line to Route C.
• Route 100, Franklin County, 7 p.m. to 5 a.m. and 8 a.m. to 3 p.m., one eastbound/westbound lane closed from Route OO to I-44 Washington exit. Flaggers will direct traffic through the work zone.
• Route KK, Franklin County, 7 a.m. to 5 p.m., one lane closed between Route C and Route 185. Flaggers will direct traffic through the work zone.
• Route MM, Franklin County, 6 a.m. to 4 p.m., one lane closed between Beauty Dr. and Purina Farms.
• Route MM, Franklin County, 5 p.m. to 5 a.m., one eastbound/westbound lane closed from Route 30 to Route M. Flaggers will direct traffic through the work zone.
• Route MM, Franklin County, 8 a.m. to 3 p.m., one eastbound/westbound lane closed between Route 30 and Hillsboro House Springs Rd. Flaggers will direct traffic through the work zone.

 Wednesday, September 3

• I-64, St. Louis City, 9 a.m. to 3 p.m, the ramp from Market St. to westbound I-64 closed.
• I-64, St. Louis City, 6 a.m. to 2 p.m., one eastbound lane closed from 22nd to 6th St.
• I-64, St. Louis City, 9 a.m. to 3 p.m., one westbound lane closed from Broadway to 22nd
• I-170, St. Louis County, 9 a.m. to 3 p.m., one lane of Lackland closed over I-170. Flaggers will direct traffic through the work zone.
• I-170, St. Louis County, 8:30 p.m. to 5 a.m., one southbound lane closed from Scudder Road to Route 115 and one lane and ramp under the westbound I-70 overpass closed.
• I-170, St. Louis County, 9 p.m. to 6 a.m., one northbound lane closed from Scudder Road to Route 115 and one lane and ramp under the eastbound I-70 overpass closed.
• I-170, St. Louis County, 6 a.m. to 5 p.m., one lane closed on Pershall under I-270 from Hanley to Hazelwood Avenue.
• Route 21, St. Louis County, 6 a.m. to 2 p.m., one northbound and southbound lane closed between I-270 and Schuessler.
• Route 21, St. Louis County, 6 a.m. to 2 p.m.one northbound and southbound lane closed between Lindbergh and Green Park.
• Route 61/67, St. Louis County, 8 a.m. to 3 p.m., one southbound and northbound lane closed from the Conway/German Intersection to Conway Road.
• Route 100, St. Louis County, 7 p.m. to 6 a.m., one eastbound and westbound lane closed between Highway OO and Booness Lane. A pilot car will help direct traffic through the work zone.
• Route 100, St. Louis County, 9 p.m. to 5 a.m., the eastbound and westbound ramps at Route 109 closed.
• Route 109, St. Louis County, 7 p.m. to 5 a.m., one northbound and southbound lane closed between Route cc and Clayton.
• Route 115, St. Louis County, 7 p.m. to 5 a.m., one lane closed eastbound and westbound from I-170 to Hanley.
• Route 141, St. Louis County, 7 p.m. to 5 a.m., up to two lanes closed between Conway and South Woods Mill Rd.
• Route 255, St. Louis County, 8 p.m. to 5 a.m., one westbound lane closed from Koch Rd. to I-55.
• Route 340, St. Louis County, 8 p.m. to 6 a.m., one eastbound and westbound lane closed between Lindbergh and I-170.
• Route 340, St. Louis County, 8 p.m. to 6 a.m., one eastbound and westbound lane closed between Warson and I-170.
• Route 340, St. Louis County, 9 a.m. to 3 p.m., one eastbound and westbound lane closed between Warson and I-170.
• Route 366, St. Louis County, 6 a.m. to 3 p.m., one westbound lane closed from Laclede Station Rd. to Grant.
• Route AB, St. Louis County, 7 a.m. to 3 p.m., one lane closed eastbound and westbound between I-270 and Route 141. Flaggers will direct traffic through the work zone.
• I-64, St. Charles County, 8 p.m. to 5:30 a.m., one eastbound lane closed from I-70 to Route K.
• I-64, St. Charles County, 8 p.m. to 7 a.m., one westbound lane closed from Route K to I-70.
• I-70, St. Charles County, 9 p.m. to 5:30 a.m., one eastbound lane closed from Wentzville Parkway to Route A.
• I-70, St. Charles County, 9 p.m. to 5:30 a.m., one lane closed westbound from Route Z to Route A.
• Route 370, St. Charles County, 9 a.m. to 3 p.m., one westbound lane and bike path closed on the Discovery bridge over the Missouri River.
• Route P, St. Charles County, 9 a.m. to 3 p.m., one closed at Eron Branch. Flaggers will direct traffic through the work zone.
• Route Z, St. Charles County, 10 p.m. to 5 a.m., all lanes closed on Route Z under I-70.
• I-55, Jefferson County, 9 p.m. to 5 a.m., one southbound lane closed from McNutt to Route A.
• I-55, Jefferson County, 9 p.m. to 5 a.m., southbound I-55 ramp to Route A closed.
• I-55, Jefferson County, 7 p.m. to 12 a.m., one northbound lane closed right before Route 67.
• Route 21, Jefferson County, 9 a.m. to 3 p.m. one lane closed over Route M. Flaggers will direct traffic through the work zone.
• Route A, Jefferson County, 7 p.m. to 5 a.m., the bridge over I-55 will be closed in one direction (eastbound and westbound) at a time.
• Route 50, Franklin County, 6 p.m. to 5 a.m. and 8 a.m. to 3 p.m., one eastbound and westbound lane closed between Independence Drive to Route BB.
• Route 50, Franklin County, 6 p.m. to 5 a.m. and 8 a.m. to 3 p.m., one eastbound and westbound lane closed from Gasconade/Franklin County line to Route C.
• Route 100, Franklin County, 7 p.m. to 5 a.m. and 8 a.m. to 3 p.m., one eastbound/westbound lane closed from Route OO to I-44 Washington exit. Flaggers will direct traffic through the work zone.
• Route KK, Franklin County, 7 a.m. to 5 p.m., one lane closed between Route 185 to Route 100. Flaggers will direct traffic through the work zone.
• Route KK, Franklin County, 7 a.m. to 5 p.m., one lane closed between Route C and Route 185. Flaggers will direct traffic through the work zone.
• Route MM, Franklin County, 6 a.m. to 4 p.m., one lane closed between Beauty Dr. and Purina Farms.
• Route MM, Franklin County, 5 p.m. to 5 a.m., one eastbound/westbound lane closed from Route 30 to Route M. Flaggers will direct traffic through the work zone.
• Route MM, Franklin County, 8 a.m. to 3 p.m., one eastbound/westbound lane closed between Route 30 and Hillsboro House Springs Rd. Flaggers will direct traffic through the work zone.

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