St. Louis Work Zones Dec. 11-17…

ST. LOUIS - Motorists who use Interstate 55 at Gravois this weekend should consider alternate routes or allow extra travel time as the northbound interstate will be closed Saturday.

Weather depending, crews will close all lanes of northbound I-55 at Gravois for tree removal and drain work, starting at 5 a.m. Saturday, December 13. The ramp to westbound Interstate 44 will remain open. All lanes will reopen by 2:30 p.m.

During the closure, drivers will detour onto Gravois (Exit 207A) and continue to 12th Street where they can get back onto northbound I-55.

In Jefferson County, drivers who use northbound Interstate 55 between Route Z and Route M should be aware the interstate is closed overnight Wednesday, December 10 through Saturday, December 13 between 11 p.m. and 4 a.m. to set girders for a new bridge over the BNSF railroad.

All southbound lanes of Interstate 55 between Route Z and Route M will be closed to set girders for a new bridge over the BNSF railroad overnight Monday, December 15 through Wednesday, December 17 between 11 p.m. and 4 a.m. All work is weather permitting.

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, one southbound lane closed from I-44 to north of Bates and two southbound lanes closed north of Bates to north of Weber through early 2026.
• 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 early 2026.
• I-55, St. Louis City, the ramp from Virginia to southbound is closed through early 2026.
• I-55, St. Louis City, the ramp from southbound to Loughborough and the Loughborough on-ramp to southbound will be closed through early 2026.
• I-55, St. Louis City, the ramp from Lafayette/Truman to southbound is closed through early 2026.
• I-55, St. Louis City, the ramp from Germania to northbound is closed through early 2026.
• I-55, St. Louis City, the ramp from southbound to Germania is through early 2026.
• I-270, St. Louis County, various northbound and southbound lanes narrowed between I-64 and Olive through early 2026.
• I-270. St. Louis County, Conway Rd. under I-270 closed.
• 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 21, St. Louis County, one lane northbound and southbound will be closed between Gravois Creek and Grant's Trail through late 2025.
• 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, closed at Sarala Rd. through Friday, Dec. 12.
• 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.
• I-64, St. Charles County, North Outer Road/Technology Drive bridge closed through 2025.
• I-64, St. Charles County, starting at 7 a.m. Monday, Dec. 8 through Wednesday, Dec. 10, one lane of eastbound I-64 past the Boone Bridge will be closed.
• I-70, St. Charles County, North Outer Road westbound at Foristell temporary slip ramp in place through January 2026.
• 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, Route CC fully closed at Route 67. No access to 67 on both sides of the intersection.
• 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, all lanes closed between Route T and Coleman Road.

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

Thursday, December 11

• I-270, St. Louis County, 6 a.m. to 5 p.m., one lane closed along Pershall Rd. from Hanley to Hazelwood Ave.
• Route 21, St. Louis County, 6 a.m. to 2 p.m., one northbound and southbound lane closed from Green Park to Reavis Road.
• Route 21, St. Louis County, 6 a.m. to 2 p.m., one northbound and southbound lane closed from Green Park to Gravois.
• Route 100, St. Louis County, 7 a.m. to 3 p.m., one eastbound lane closed between Barrett Station Road and Pointe Drive, and between Topping Lane and I-270.
• Route 267, St. Louis County, 5 a.m. to 2 p.m., one southbound lane closed River City Boulevard to Bayless.
• Route 366, St. Louis County, 6 a.m. to 3 p.m., one westbound lane closed from MacKenzie to Grant.
• Route AB, St. Louis County, 7 a.m. to 3 p.m., one lane closed eastbound or westbound at Coeur DeVille intersection; between Emerson Rd. and Coeur DeVille Dr. Flaggers will direct traffic through the two-lane portions of Route AB.
• 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 9 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 westbound lane closed from Route A to Route Z.
• I-70, St. Charles County, 8 p.m. to 6 a.m., one westbound lane closed between Wentzville Parkway to Foristell.
• I-55, Jefferson County, 11 p.m. to 4 a.m., northbound I-55 closed at BNSF Railway bridge.
• Route 67, Jefferson County, 7 a.m. to 2 p.m., one southbound lane closed at Route CC.
• Route 67, Jefferson County, 9 a.m. to 5 p.m., one northbound lane closed at Route CC.

Friday, December 12

• I-270, St. Louis County, 6 a.m. to 5 p.m., one lane closed along Pershall Rd. from Hanley to Hazelwood Ave.
• Route 21, St. Louis County, 6 a.m. to 2 p.m., one northbound and southbound lane closed from Green Park to Reavis Road.
• Route 21, St. Louis County, 6 a.m. to 2 p.m., one northbound and southbound lane closed from Green Park to Gravois.
• Route 100, St. Louis County, 7 a.m. to 3 p.m., one eastbound lane closed between Barrett Station Road and Pointe Drive, and between Topping Lane and I-270.
• Route 267, St. Louis County, 5 a.m. to 2 p.m., one southbound lane closed River City Boulevard to Bayless.
• Route 366, St. Louis County, 6 a.m. to 3 p.m., one westbound lane closed from MacKenzie to Grant.
• Route AB, St. Louis County, 7 a.m. to 3 p.m., one lane closed eastbound or westbound at Coeur DeVille intersection; between Emerson Rd. and Coeur DeVille Dr. Flaggers will direct traffic through the two-lane portions of Route AB.
• 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 9 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 westbound lane closed from Route A to Route Z.
• I-70, St. Charles County, 8 p.m. to 6 a.m., one westbound lane closed between Wentzville Parkway to Foristell.
• I-55, Jefferson County, 11 p.m. to 4 a.m., northbound I-55 closed at BNSF Railway bridge.
• I-55, Jefferson County, 7 p.m. to 5 a.m., one northbound lane closed at 3rd
• Route 67, Jefferson County, 7 a.m. to 2 p.m., one southbound lane closed at Route CC.
• Route 67, Jefferson County, 9 a.m. to 5 p.m., one northbound lane closed at Route CC.

Saturday, December 13

• I-55, Jefferson County, 11 p.m. to 4 a.m., northbound/southbound I-55 closed at BNSF Railway bridge.

Sunday, December 14

Monday, December 15

• I-270, St. Louis County, 6 a.m. to 5 p.m., one lane closed along Pershall Rd. from Hanley to Hazelwood Ave.
• Route 21, St. Louis County, 6 a.m. to 2 p.m., one northbound and southbound lane closed from Green Park to Reavis Road.
• Route 21, St. Louis County, 6 a.m. to 2 p.m., one northbound and southbound lane closed from Green Park to Gravois.
• Route 100, St. Louis County, 7 a.m. to 3 p.m., one eastbound lane closed between Barrett Station Road and Pointe Drive, and between Topping Lane and I-270.
• Route 267, St. Louis County, 5 a.m. to 2 p.m., one southbound lane closed River City Boulevard to Bayless.
• Route 366, St. Louis County, 6 a.m. to 4 p.m., one westbound lane closed from MacKenzie to Grant.
• Route 370, St. Louis County, 7 p.m. to 5:30 a.m., two westbound lanes closed from Missouri River to I-270.
• Route 370, St. Louis County, 6 p.m. to 5:30 a.m., two eastbound lanes closed from the Missouri River to I-270.
• Route AB, St. Louis County, 7 a.m. to 3 p.m., one lane closed eastbound or westbound at Coeur DeVille intersection; between Emerson Rd. and Coeur DeVille Dr. Flaggers will direct traffic through the two-lane portions of Route AB.
• I-64, St. Charles County, 9 a.m. to 3 p.m., one westbound lane closed between Route K and Route 364.
• 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 9 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 westbound lane closed from Route A to Route Z.
• I-70, St. Charles County, 8 p.m. to 6 a.m., one westbound lane closed between Wentzville Parkway to Foristell.
• I-70, St. Charles County, 9 a.m. to 3 p.m., one lane closed at Route W/Foristell interchange. Flaggers will direct traffic through the work zone.
• I-55, Jefferson County, 11 p.m. to 4 a.m., southbound I-55 closed at BNSF Railway bridge.

Tuesday, December 16

• I-270, St. Louis County, 6 a.m. to 5 p.m., one lane closed along Pershall Rd. from Hanley to Hazelwood Ave.
• Route 21, St. Louis County, 6 a.m. to 2 p.m., one northbound and southbound lane closed from Green Park to Reavis Road.
• Route 21, St. Louis County, 6 a.m. to 2 p.m., one northbound and southbound lane closed from Green Park to Gravois.
• Route 100, St. Louis County, 7 a.m. to 3 p.m., one eastbound lane closed between Barrett Station Road and Pointe Drive, and between Topping Lane and I-270.
• Route 267, St. Louis County, 5 a.m. to 2 p.m., one southbound lane closed River City Boulevard to Bayless.
• Route 366, St. Louis County, 6 a.m. to 4 p.m., one westbound lane closed from MacKenzie to Grant.
• Route 370, St. Louis County, 7 p.m. to 5:30 a.m., two westbound lanes closed from Missouri River to I-270.
• Route 370, St. Louis County, 6 p.m. to 5:30 a.m., two eastbound lanes closed from the Missouri River to I-270.
• Route AB, St. Louis County, 7 a.m. to 3 p.m., one lane closed eastbound or westbound at Coeur DeVille intersection; between Emerson Rd. and Coeur DeVille Dr. Flaggers will direct traffic through the two-lane portions of Route AB.
• I-64, St. Charles County, 9 a.m. to 3 p.m., one westbound lane closed between Route K and Route 364.
• 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 9 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 westbound lane closed from Route A to Route Z.
• I-70, St. Charles County, 8 p.m. to 6 a.m., one westbound lane closed between Wentzville Parkway to Foristell.
• I-70, St. Charles County, 9 a.m. to 3 p.m., one lane closed at Route W/Foristell interchange. Flaggers will direct traffic through the work zone.
• Route 30, Franklin County, 7 p.m. to 6 a.m., one lane closed from Bardot Street to Route 47.
• I-55, Jefferson County, 11 p.m. to 4 a.m., southbound I-55 closed at BNSF Railway bridge.

Wednesday, December 17

• I-270, St. Louis County, 6 a.m. to 5 p.m., one lane closed along Pershall Rd. from Hanley to Hazelwood Ave.
• Route 21, St. Louis County, 6 a.m. to 2 p.m., one northbound and southbound lane closed from Green Park to Reavis Road.
• Route 21, St. Louis County, 6 a.m. to 2 p.m., one northbound and southbound lane closed from Green Park to Gravois.
• Route 100, St. Louis County, 7 a.m. to 3 p.m., one eastbound lane closed between Barrett Station Road and Pointe Drive, and between Topping Lane and I-270.
• Route 267, St. Louis County, 5 a.m. to 2 p.m., one southbound lane closed River City Boulevard to Bayless.
• Route 366, St. Louis County, 6 a.m. to 4 p.m., one westbound lane closed from MacKenzie to Grant.
• Route 370, St. Louis County, 7 p.m. to 5:30 a.m., two westbound lanes closed from Missouri River to I-270.
• Route 370, St. Louis County, 6 p.m. to 5:30 a.m., two eastbound lanes closed from the Missouri River to I-270.
• Route AB, St. Louis County, 7 a.m. to 3 p.m., one lane closed eastbound or westbound at Coeur DeVille intersection; between Emerson Rd. and Coeur DeVille Dr. Flaggers will direct traffic through the two-lane portions of Route AB.
• I-64, St. Charles County, 9 a.m. to 3 p.m., one westbound lane closed between Route K and Route 364.
• 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 9 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 westbound lane closed from Route A to Route Z.
• I-70, St. Charles County, 8 p.m. to 6 a.m., one westbound lane closed between Wentzville Parkway to Foristell.
• I-70, St. Charles County, 9 a.m. to 3 p.m., one lane closed at Route W/Foristell interchange. Flaggers will direct traffic through the work zone.
• I-55, Jefferson County, 11 p.m. to 4 a.m., southbound I-55 closed at BNSF Railway bridge.

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