St. Louis Work Zones March 19-25

ST. LOUIS - MoDOT will close westbound lanes of I-70 at Route N (Florissant Rd.) overnight Wednesday and Thursday, March 18 and 19. Starting at 7 p.m. (TONIGHT) Wednesday, March 18, one lane of westbound I-70 will close and at 8 p.m. a second lane will close. Both lanes will reopen by 5 a.m. Thursday, March 19.

At 7 p.m. Thursday, March 19, two lanes of I-70 will close and reopen by 5 a.m. Friday, March 20.

The closures will allow crews to make emergency pavement repairs.

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 Virginia on ramp to southbound I-55 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-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 AB, St. Louis County, one eastbound and westbound lane closed under I-270.
• 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 spring 2026.
• Route 94, St. Charles County, one left-turn lane for on ramp to eastbound 370 closed.
• Route 370, St. Charles County, two westbound lanes moved to the eastbound Discovery Bridge across the Missouri River until late 2027.
• I-55, Jefferson County, one southbound lane closed at the Meramec River.
• 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, one southbound lane closed between Route 141 and Meramec Bottom until 2027.
• 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 from Farinella Nursery to driveway at Route 734+62.

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

Thursday, March 19

• I-270, St. Louis County, 8 p.m. to 5 a.m., up to two northbound lanes closed at Ladue Rd.
• Route 21, St. Louis County, 6 a.m. to 2 p.m., one northbound and southbound lane closed from Green Park to Gravois.
• 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 between Lutheran South to Suson Hills.
• Route 30, St. Louis County, 7 p.m. to 4 a.m., one lane closed eastbound in various locations along the corridor.
• Route 61/67, St. Louis County, 7 a.m. to 3 p.m., one northbound and southbound lane closed between the Meramec River and Mattese Creek.
• Route 100, St. Louis County, 7 a.m. to 3 p.m., one westbound lane closed between Weidman Road and Enchanted Parkway.
• Route 100, St. Louis County, 7 a.m. to 3 p.m., one westbound lane closed between Topping Rd. and Pointe Dr.
• Route 340, St. Louis County, 9 a.m. to 3 p.m., one lane closed between I-270 and Office Parkway North.
• Route 366, St. Louis County, 6 a.m. to 3 p.m., one eastbound and westbound lane closed between Grant and Laclede Station Road.
• I-64, St. Charles County, 8 p.m. to 5:30 a.m., one eastbound lane closed between I-70 to Route 364.
• I-64, St. Charles County, 8 p.m. to 9 a.m., one westbound lane closed between Route 364 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, 8 a.m. to 1 p.m., one lane closed westbound between Wentzville Parkway and David Hoeckel Parkway.
• Route Z, St. Charles County, 10 p.m.to 5 a.m., all lanes closed between the eastbound and westbound I-70 ramps.
• Route 21, Jefferson County, 7:30 a.m. to 6:30 p.m., one lane closed between Big River to Route B. Flaggers and pilot car will direct traffic through the work zone.
• Route 30, Jefferson County, 5 p.m. to 6 a.m., one lane closed between Ridge Road and Route NN. A pilot car will direct traffic through the work zone.

Friday, March 20

• I-270, St. Louis County, 8 p.m. to 5 a.m., up to two northbound lanes closed at Ladue Rd.
• Route 21, St. Louis County, 6 a.m. to 2 p.m., one northbound and southbound lane closed from Green Park to Gravois.
• 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 between Lutheran South to Suson Hills.
• Route 30, St. Louis County, 7 p.m. to 4 a.m., one lane closed eastbound in various locations along the corridor.
• Route 61/67, St. Louis County, 7 a.m. to 3 p.m., one northbound and southbound lane closed between the Meramec River and Mattese Creek.
• Route 100, St. Louis County, 7 a.m. to 3 p.m., one westbound lane closed between Weidman Road and Enchanted Parkway.
• Route 100, St. Louis County, 7 a.m. to 3 p.m., one westbound lane closed between Topping Rd. and Pointe Dr.
• Route 340, St. Louis County, 9 a.m. to 3 p.m., one lane closed between I-270 and Office Parkway North.
• Route 366, St. Louis County, 6 a.m. to 3 p.m., one eastbound and westbound lane closed between Grant and Laclede Station Road.
• I-64, St. Charles County, 8 p.m. to 5:30 a.m., one eastbound lane closed between I-70 to Route 364.
• I-64, St. Charles County, 8 p.m. to 9 a.m., one westbound lane closed between Route 364 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, 8 a.m. to 1 p.m., one lane closed westbound between Wentzville Parkway and David Hoeckel Parkway.
• Route Z, St. Charles County, 10 p.m.to 5 a.m., all lanes closed between the eastbound and westbound I-70 ramps.
• Route 21, Jefferson County, 7:30 a.m. to 6:30 p.m., one lane closed between Big River to Route B. Flaggers and pilot car will direct traffic through the work zone.
• Route 30, Jefferson County, 5 p.m. to 6 a.m., one lane closed between Ridge Road and Route NN. A pilot car will direct traffic through the work zone.

Saturday, March 21

• I-270, St. Louis County, 8 p.m. to 5 a.m., up to two northbound lanes closed at Ladue Rd.

Sunday, March 22

• There are no scheduled closures.

Monday, March 23

• I-270, St. Louis County, 8 p.m. to 5 a.m., up to two southbound lanes closed at Ladue Rd.
• Route 21, St. Louis County, 6 a.m. to 2 p.m., one northbound and southbound lane closed from Green Park to Gravois.
• 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 between Lutheran South to Suson Hills.
• Route 30, St. Louis County, 7 p.m. to 4 a.m., one lane closed eastbound in various locations along the corridor.
• Route 61/67, St. Louis County, 7 a.m. to 3 p.m., one northbound and southbound lane closed between the Meramec River and Mattese Creek.
• Route 100, St. Louis County, 7 a.m. to 3 p.m., one westbound lane closed between Weidman Road and Enchanted Parkway.
• Route 340, St. Louis County, 9 a.m. to 3 p.m., one lane closed between I-270 and Office Parkway North.
• Route 366, St. Louis County, 6 a.m. to 3 p.m., one eastbound and westbound lane closed between Grant and Laclede Station Road.
• I-64, St. Charles County, 8 p.m. to 5:30 a.m., one eastbound lane closed between I-70 to Route 364.
• I-64, St. Charles County, 8 p.m. to 9 a.m., one westbound lane closed between Route 364 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, 8 a.m. to 1 p.m., one lane closed westbound between Wentzville Parkway and David Hoeckel Parkway.
• Route Z, St. Charles County, 10 p.m.to 5 a.m., all lanes closed between the eastbound and westbound I-70 ramps.
• Route 21, Jefferson County, 7:30 a.m. to 6:30 p.m., one lane closed between Big River to Route B. Flaggers and pilot car will direct traffic through the work zone.
• Route 30, Jefferson County, 5 p.m. to 6 a.m., one lane closed between Ridge Road and Route NN. A pilot car will direct traffic through the work zone.

Tuesday, March 24

• I-270, St. Louis County, 8 p.m. to 5 a.m., up to two southbound lanes closed at Ladue Rd.
• Route 21, St. Louis County, 6 a.m. to 2 p.m., one northbound and southbound lane closed from Green Park to Gravois.
• 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 between Lutheran South to Suson Hills.
• Route 30, St. Louis County, 7 p.m. to 4 a.m., one lane closed eastbound in various locations along the corridor.
• Route 61/67, St. Louis County, 7 a.m. to 3 p.m., one northbound and southbound lane closed between the Meramec River and Mattese Creek.
• Route 100, St. Louis County, 7 a.m. to 3 p.m., one westbound lane closed between Weidman Road and Enchanted Parkway.
• Route 340, St. Louis County, 9 a.m. to 3 p.m., one lane closed between I-270 and Office Parkway North.
• Route 366, St. Louis County, 6 a.m. to 3 p.m., one eastbound and westbound lane closed between Grant and Laclede Station Road.
• I-64, St. Charles County, 8 p.m. to 5:30 a.m., one eastbound lane closed between I-70 to Route 364.
• I-64, St. Charles County, 8 p.m. to 9 a.m., one westbound lane closed between Route 364 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, 8 a.m. to 1 p.m., one lane closed westbound between Wentzville Parkway and David Hoeckel Parkway.
• Route Z, St. Charles County, 10 p.m.to 5 a.m., all lanes closed between the eastbound and westbound I-70 ramps.
• Route 21, Jefferson County, 7:30 a.m. to 6:30 p.m., one lane closed between Big River to Route B. Flaggers and pilot car will direct traffic through the work zone.
• Route 30, Jefferson County, 5 p.m. to 6 a.m., one lane closed between Ridge Road and Route NN. A pilot car will direct traffic through the work zone.

Wednesday, March 25

• I-270, St. Louis County, 8 p.m. to 5 a.m., up to two southbound lanes closed at Ladue Rd.
• Route 21, St. Louis County, 6 a.m. to 2 p.m., one northbound and southbound lane closed from Green Park to Gravois.
• 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 between Lutheran South to Suson Hills.
• Route 30, St. Louis County, 7 p.m. to 4 a.m., one lane closed eastbound in various locations along the corridor.
• Route 61/67, St. Louis County, 7 a.m. to 3 p.m., one northbound and southbound lane closed between the Meramec River and Mattese Creek.
• Route 100, St. Louis County, 7 a.m. to 3 p.m., one westbound lane closed between Weidman Road and Enchanted Parkway.
• Route 340, St. Louis County, 9 a.m. to 3 p.m., one lane closed between I-270 and Office Parkway North.
• Route 366, St. Louis County, 6 a.m. to 3 p.m., one eastbound and westbound lane closed between Grant and Laclede Station Road.
• I-64, St. Charles County, 8 p.m. to 5:30 a.m., one eastbound lane closed between I-70 to Route 364.
• I-64, St. Charles County, 8 p.m. to 9 a.m., one westbound lane closed between Route 364 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, 8 a.m. to 1 p.m., one lane closed westbound between Wentzville Parkway and David Hoeckel Parkway.
• Route Z, St. Charles County, 10 p.m.to 5 a.m., all lanes closed between the eastbound and westbound I-70 ramps.
• I-55, Jefferson County, 9 p.m to 4 a.m., one northbound lane closed at Route A and the I-55 on ramp from Route A closed.
• Route 21, Jefferson County, 7:30 a.m. to 6:30 p.m., one lane closed between Big River to Route B. Flaggers and pilot car will direct traffic through the work zone.
• Route 30, Jefferson County, 5 p.m. to 6 a.m., one lane closed between Ridge Road and Route NN. A pilot car will direct traffic through the work zone.

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