St. Louis Work Zones May 21-27

ST. LOUIS - The Missouri Department of Transportation will suspend most work on interstates and state-maintained highways to reduce congestion and ease travel during the Memorial Day weekend.

Crews will suspend lane closures for work zones starting Friday, May 22 at noon, although any priority roadwork such as pothole patching or other repairs may require work zones. Traffic will continue to have restrictions where there are permanent barriers. Work on all construction projects will resume at 5 a.m. Tuesday, May 26.

For more on roadway closures due to construction, additional work zone information, and real-time roadway weather conditions, go to http://traveler.modot.org/map. For real-time traffic, visit www.gatewayguide.com.

Motorists should be aware of the following ongoing closures:

• 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.
• I-55, St. Louis City, one southbound lane closed from Gasconade to Weber.
• I-55, St. Louis City, the ramp from Germania to northbound is closed.
• I-55, St. Louis City, the Gasconade on ramp to northbound I-55 will be closed until June.
• I-55, St. Louis City, one northbound lane will be closed from 4500 Broadway to Potomac through June.
• 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.
• 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 100, St. Louis County, one eastbound and westbound lane closed from Mason Lane to Barrett Station Road through late 2026.
• Route 366, St. Louis County, starting Wednesday, May 27 one eastbound and westbound lane closed between Watson Industrial to Pardee, through the end of June.
• Route N, St. Louis County, one lane closed southbound from south of I-70 to Augusta Avenue.
• 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 Avenue.
• I-64, St. Charles County, beginning 6 a.m. Tuesday, May 26, eastbound exit ramp to Prospect Rd. closed.
• I-64, St. Charles County, beginning 9 a.m. Tuesday, May 26, eastbound entrance ramp from Prospect Rd. closed.
• I-70, St. Louis County, one eastbound north outer road lane closed west of Route W.
• I-70, St. Charles County, westbound on ramp closed at Foristell.
• Route 94, St. Charles County, one left-turn lane for on ramp to eastbound 370 closed through late 2027.
• Route 370, St. Charles County, two westbound lanes moved to the eastbound Discovery Bridge across the Missouri River until late 2027. Two eastbound lanes shifted to the right. Temporary barrier to divide eastbound and westbound lanes.
• I-55, Jefferson County, one lane closed northbound and southbound between Route 141 and Meramec Bottom.
• 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, all lanes closed on Herky Horine under the interstate until June.
• Route 67, Jefferson County, one 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.

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

Thursday, May 21

• I-70, St. Louis City, 8 a.m. to 3:30 p.m., one westbound lane closed on the Stan Musial Bridge.
• Route 100, St. Louis City, 5 a.m. to 9 p.m., one lane closed westbound between Kingshighway and Yale.
• I-55, St. Louis County, 7 p.m. to 6 a.m., up to two northbound lanes closed from the Meramec River to Lindbergh.
• I-270, St. Louis County, 8 p.m. to 5 a.m., up to two lanes closed northbound and southbound between I-64 and Dougherty Ferry.
• Route 30, St. Louis County, 6 p.m. to 5 a.m., one eastbound and westbound lane closed from the River Des Peres to 141.
• Route 30, St. Louis County, 7 a.m.to 3 p.m., one eastbound and westbound lane closed between Sappington and Laclede Station Rd.
• Route 100, St. Louis County, 7 p.m. to 5 a.m., one westbound lane closed between I-270 and Des Peres Rd.
• Route 100, St. Louis County, 8:30 a.m. to 2 p.m., one eastbound lane closed from Route 141 and Highland Boulevard.
• Route 231, St. Louis County, 8 a.m. to 3 p.m., one northbound lane closed between Christopher Drive and Pioneer Drive.
• Route 267, St. Louis County, 6 a.m. to 3 p.m., one lane closed between Bayless and Will Ave.
• Route 340, St. Louis County, 9 a.m. to 3 p.m., one eastbound and westbound lane closed between I-270 and North Office Parkway.
• Route 340, St. Louis County, 9 a.m. to 3 p.m., one lane closed between I-170 to 82nd
• Route 366, St. Louis County, 6 a.m. to 3 p.m., one lane closed between Laclede Station Rd. and Pardee.
• Route 370, St. Louis County, 8 a.m. to 3:30 p.m., one eastbound lane closed at Ferguson.
• Route 370, St. Louis County, 7 p.m. to 5:30 a.m., up to two westbound lanes closed between I-270 and the Mills Mall exit ramps.
• Route N, St. Louis County, 6 a.m. to 3:30 p.m., various lanes closed between Brotherton and Cool Valley; and Route 115 to south of University Place.
• I-64, St. Charles County, 8 p.m. to 5:30 a.m., one eastbound lane closed between I-70 to Route K.
• I-64, St. Charles County, 8 p.m. to 9 a.m., one westbound lane closed between Route K and I-70.
• I-70, St. Charles County, 8 p.m. to 6 a.m., one eastbound and westbound lane closed from Foristell to Wentzville.
• I-70, St. Charles County, 9 p.m. to 5:30 a.m., one eastbound and westbound lane closed from Wentzville Parkway to Route A.
• I-70, St. Charles County, 9 a.m. to 2 p.m., all lanes at Route Z will be closed for up to 15 minutes for rock excavation.
• Route Z, St. Charles County, 9 a.m. to 2 p.m., all lanes at I-70 will be closed for up to 15 minutes for rock excavation.
• I-55, Jefferson County, 7 p.m. to 5 a.m., one northbound lane closed from Route 67 to Route A.
• I-55, Jefferson County, 8 p.m. to 6 a.m., one southbound right lane closed from Manley Quarry to Route A.
• I-55, Jefferson County, 9 p.m. to 5 a.m., southbound Route 67 to northbound I-55 ramp closed.
• I-55, Jefferson County, 9 p.m. to 5 a.m., northbound on and off ramps for Route A closed.
• Route CC, Jefferson County, 6 p.m. to 5 a.m.., one lane closed from Route 110 to Route 67.
• Route V, Jefferson County, 8 a.m. to 3:30 p.m., one lane closed over Joachim Creek. A temporary signal will help direct traffic through the work zone.
• I-44, Franklin County, 7 p.m. to 5 a.m., one eastbound lane closed from Route 50 to Route 100.
• Route D, Franklin County, one lane closed at Route D bridge over I-44.
• Route T, Franklin County, 7 a.m. to 5 p.m., one lane closed between Route 100 and the St. Louis County line. Flaggers and a pilot car will direct traffic through the work zone.
• Route PP, Franklin County, 8 a.m. to 3 p.m., all lanes closed between Route 30 and Pickles Ford Rd. Detours will be signed.

Friday, May 22

• Route 100, St. Louis City, 5 a.m. to 12 p.m., one lane closed westbound between Kingshighway and Yale.
• Route 30, St. Louis County, 7 a.m. to 12 p.m., one eastbound and westbound lane closed between Sappington and Laclede Station Rd.
• Route 100, St. Louis County, 8:30 a.m. to 12 p.m., one eastbound lane closed from Route 141 and Highland Boulevard.
• Route 231, St. Louis County, 8 a.m. to 12 p.m., one northbound lane closed between Christopher Drive and Pioneer Drive.
• Route 267, St. Louis County, 6 a.m. to 12 p.m., one lane closed between Bayless and Will Ave.
• Route 340, St. Louis County, 9 a.m. to 12 p.m., one eastbound and westbound lane closed between I-270 and North Office Parkway.
• Route 340, St. Louis County, 9 a.m. to 12 p.m., one lane closed between I-170 to 82nd
• Route 366, St. Louis County, 6 a.m. to 12 p.m., one lane closed between Laclede Station Rd. and Pardee.
• Route N, St. Louis County, 6 a.m. to 12 p.m., various lanes closed between Brotherton and Cool Valley; and Route 115 to south of University Place.
• Route PP, Franklin County, 8 a.m. to 3 p.m., all lanes closed between Route 30 and Pickles Ford Rd. Detours will be signed.

Saturday, May 23

• No scheduled work zones due to the Memorial Day holiday.

Sunday, May 24

• No scheduled work zones due to the Memorial Day holiday.

Monday, May 25

• Route 370, St. Louis County, 7 p.m. to 5:30 a.m., up to two westbound lanes closed between I-270 and the Mills Mall exit ramps.

Tuesday, May 26

• I-70, St. Louis City, 8 a.m. to 3:30 p.m., one westbound lane closed on the Stan Musial Bridge.
• Route 100, St. Louis City, 5 a.m. to 9 p.m., one lane closed westbound between Kingshighway and Vandeventer.
• I-44, St. Louis County, 9 a.m. to 2:30 p.m., one eastbound lane closed at Big Bend Boulevard.
• I-55, St. Louis County, 7 p.m. to 6 a.m., up to two northbound lanes closed from the Meramec River to Lindbergh.
• I-270, St. Louis County, 8 p.m. to 5 a.m., up to two lanes closed northbound and southbound between I-64 and Dougherty Ferry.
• Route 30, St. Louis County, 6 p.m. to 5 a.m., one eastbound and westbound lane closed from the River Des Peres to 141.
• Route 30, St. Louis County, 7 a.m. to 3 p.m., one eastbound and westbound lane closed between Sappington and Laclede Station Rd.
• Route 61/67, St. Louis County, 7:30 a.m. to 2:30 p.m., one lane closed northbound and southbound on the Mattesse Creek and Meramec River bridges.
• Route 100, St. Louis County, 7 p.m. to 5 a.m., one westbound lane closed between I-270 and Des Peres Rd.
• Route 100, St. Louis County, 8:30 a.m. to 2 p.m., one eastbound lane closed from Route 141 and Highland Boulevard.
• Route 231, St. Louis County, 8 a.m. to 3 p.m., one northbound lane closed between Christopher Drive and Pioneer Drive.
• Route 267, St. Louis County, 6 a.m. to 3 p.m., one lane closed between Bayless and Will Ave.
• Route 340, St. Louis County, 9 a.m. to 3 p.m., one eastbound and westbound lane closed between I-270 and North Office Parkway.
• Route 340, St. Louis County, 9 a.m. to 3 p.m., one lane closed between I-170 to 82nd
• Route 366, St. Louis County, 6 a.m. to 3 p.m., one eastbound and westbound lane closed between Laclede Station Rd. and Pardee and Watson Industrial to Pardee.
• Route 370, St. Louis County, 8 a.m. to 3:30 p.m., one westbound lane closed at Cowmire, Missouri Bottom and Ferguson.
• Route 370, St. Louis County, 7 p.m. to 5:30 a.m., up to two westbound lanes closed between I-270 and the Mills Mall exit ramps.
• Route N, St. Louis County, 6 a.m. to 3:30 p.m., various lanes closed between Brotherton and Cool Valley; and Route 115 to south of University Place.
• I-64, St. Charles County, 8 p.m. to 5:30 a.m., one eastbound lane closed between I-70 to Route K.
• I-64, St. Charles County, 8 p.m. to 9 a.m., one westbound lane closed between Route K and I-70.
• I-70, St. Charles County, 8 p.m. to 6 a.m., one eastbound and westbound lane closed from Foristell to Wentzville.
• I-70, St. Charles County, 9 p.m. to 5:30 a.m., one eastbound and westbound lane closed from Wentzville Parkway to Route A.
• I-70, St. Charles County, 9 a.m. to 2 p.m., all lanes at Route Z will be closed for up to 15 minutes for rock excavation.
• Route Z, St. Charles County, 9 a.m. to 2 p.m., all lanes at I-70 will be closed for up to 15 minutes for rock excavation.
• I-55, Jefferson County, 8 p.m. to 6 a.m., one southbound right lane closed from Manley Quarry to Route A.
• I-55, Jefferson County, 7 p.m. to 5 a.m., one northbound lane closed from Route 67 to Route A.
• I-55, Jefferson County, 9 p.m. to 5 a.m., southbound Route 67 to northbound I-55 ramp closed.
• I-55, Jefferson County, 9 p.m. to 5 a.m., northbound on and off ramps for Route A closed.
• Route CC, Jefferson County, 7 a.m. to 5 p.m., one lane closed from Route 110 to Route 67.
• Route V, Jefferson County, 8 a.m. to 3:30 p.m., one lane closed over Joachim Creek. A temporary signal will help direct traffic through the work zone.
• I-44, Franklin County, 7 p.m. to 5 a.m., one eastbound lane closed from Route 50 to Route 100.
• Route T, Franklin County, 7 a.m. to 5 p.m., one lane closed between Route 100 and the St. Louis County line. Flaggers and a pilot car will direct traffic through the work zone.
• Route PP, Franklin County, 8 a.m. to 3 p.m., all lanes closed between Route 30 and Pickles Ford Rd. Detours will be signed.

Wednesday, May 27

• I-44, St. Louis City, 9 a.m. to 2:30 p.m., one westbound lane closed west of Grand.
• Route 100, St. Louis City, 5 a.m. to 9 p.m., one lane closed westbound between Kingshighway and Vandeventer.
• I-44, St. Louis County, 9 a.m. to 4 p.m., Central Ave. closed over I-44.
• I-55, St. Louis County, 7 p.m. to 6 a.m., up to two northbound lanes closed from the Meramec River to Lindbergh.
• I-270, St. Louis County, 8 p.m. to 5 a.m., up to two lanes closed northbound and southbound between I-64 and Dougherty Ferry.
• Route 30, St. Louis County, 7 a.m. to 3 p.m., one eastbound and westbound lane closed between Sappington and Laclede Station Rd.
• Route 61/67, St. Louis County, 7:30 a.m. to 2:30 p.m., one lane closed northbound and southbound on the Mattesse Creek and Meramec River bridges.
• Route 100, St. Louis County, 7 p.m. to 5 a.m., one westbound lane closed between I-270 and Des Peres Road.
• Route 100, St. Louis County, 8:30 a.m. to 2 p.m., one eastbound lane closed from Route 141 and Highland Boulevard.
• Route 231, St. Louis County, 8 a.m. to 3 p.m., one northbound lane closed between Christopher Drive and Pioneer Drive.
• Route 267, St. Louis County, 6 a.m. to 3 p.m., one lane closed between Bayless and Will Ave.
• Route 340, St. Louis County, 9 a.m. to 3 p.m., one eastbound and westbound lane closed between I-270 and North Office Parkway.
• Route 340, St. Louis County, 9 a.m. to 3 p.m., one lane closed between I-170 to 82nd
• Route 366, St. Louis County, 6 a.m. to 3 p.m., one lane closed between Laclede Station Rd. and Pardee.
• Route 370, St. Louis County, 7 p.m. to 5:30 a.m., up to two westbound lanes closed between I-270 and the Mills Mall exit ramps.
• Route N, St. Louis County, 6 a.m. to 3:30 p.m., various lanes closed between Brotherton and Cool Valley; and Route 115 to south of University Place.
• I-64, St. Charles County, 8 p.m. to 5:30 a.m., one eastbound lane closed between I-70 to Route K.
• I-64, St. Charles County, 8 p.m. to 9 a.m., one westbound lane closed between Route K and I-70.
• I-70, St. Charles County, 8 p.m. to 6 a.m., one eastbound and westbound lane closed from Foristell to Wentzville.
• I-70, St. Charles County, 9 p.m. to 5:30 a.m., one eastbound and westbound lane closed from Wentzville Parkway to Route A.
• I-70, St. Charles County, 9 a.m. to 2 p.m., all lanes at Route Z will be closed for up to 15 minutes for rock excavation.
• Route 370, St. Charles County, 8 a.m. to 3:30 p.m., one westbound lane closed at Elm Point, Elm, and Cole Circle.
• Route Z, St. Charles County, 9 a.m. to 2 p.m., all lanes at I-70 will be closed for up to 15 minutes for rock excavation.
• I-55, Jefferson County, 8 p.m. to 6 a.m., one southbound right lane closed from Manley Quarry to Route A.
• I-55, Jefferson County, 7 p.m. to 5 a.m., one northbound lane closed from Route 67 to Route A.
• I-55, Jefferson County, 9 p.m. to 5 a.m., southbound Route 67 to northbound I-55 ramp closed.
• I-55, Jefferson County, 9 p.m. to 5 a.m., northbound on and off ramps for Route A closed.
• Route CC, Jefferson County, 7 a.m. to 5 p.m., one lane closed from Route 110 to Route 67.
• Route V, Jefferson County, 8 a.m. to 3:30 p.m., one lane closed over Joachim Creek. A temporary signal will help direct traffic through the work zone.
• I-44, Franklin County, 7 p.m. to 5 a.m., one eastbound lane closed from Route 50 to Route 100.
• Route T, Franklin County, 7 a.m. to 5 p.m., one lane closed between Route 100 and the St. Louis County line. Flaggers and a pilot car will direct traffic through the work zone.
• Route PP, Franklin County, 8 a.m. to 3 p.m., all lanes closed between Route 30 and Pickles Ford Rd. Detours will be signed.

###