St. Louis Work Zones August 6-12

ST. LOUIS - Drivers who use southbound Interstate 270 to westbound Route 100 will need to consider alternate routes in mid-August when MoDOT crews close the ramp for a week.

Crews will close the ramp from southbound I-270 to westbound Route 100 (Exit 9) starting Monday, August 10 for a week to complete significant maintenance on the ramp, including replacing a bridge joint across the ramp. The ramp to eastbound Route 100 will remain open. To detour around the closed ramp, drivers can continue on southbound I-270 to Dougherty Ferry (Exit 8), exit, cross over the interstate, and take northbound I-270 to the Route 100 exit.

All work is weather permitting. The ramp is scheduled to reopen on August 14. The work is part of work on Route 100 between I-270 and Route 141.

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-44, St. Louis City, westbound express lanes and Broadway exit closed.
• I-70, St. Louis City, westbound Broadway entrance ramp closed.
• I-270, St. Louis County, on-ramp from Riverview Drive to westbound I-270 closed.
• I-270, St. Louis County, the exit ramp closed from eastbound I-270 to Riverview through late August 2026.
• 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 northbound from the Missouri River to just north of Route 94 through late 2027.
• Route 67, St. Louis County, one northbound lane closed from Signal Hill Dr. to Bernhardt Ave.
• Route 100, St. Louis County, one eastbound and westbound lane closed from Mason Lane to Barrett Station Road through late 2026.
• Route 100, St. Louis County, one eastbound and westbound lane closed from Weidman Rd. to Manchester Meadows through late 2026.
• Route 366, St. Louis County, one eastbound and westbound lane closed between Watson Industrial to Pardee, through the end of 2026.
• I-70, St. Charles County, the eastbound I-70 on ramp from David Hoekel Parkway closed.
• Route 94, St. Charles County, one left-turn lane for the on-ramp to the eastbound 370 closed through late 2027.
• Route 370, St. Charles County, two westbound lanes moved to the eastbound Discovery Bridge across the Missouri River. Two eastbound lanes shifted to the right. Temporary barrier to divide eastbound and westbound lanes.
• Veterans Memorial Parkway, St. Charles County, closed between Callahan Rd. to Corporate Parkway.
• David Hoekel Parkway, St. Charles County, on ramp to eastbound I-70 closed.
• I-55, Jefferson County, one northbound and southbound lane closed from Meramec Bottom to Route 141.
• I-55, Jefferson County, the southbound on and off ramps connecting to Route Z closed.
• Route 61/67, Jefferson County, one lane closed northbound and southbound from Brandon Wallace Way to 6th/8th Street through summer 2027.
• Route Z, Jefferson County, all interior lanes closed under I-55. One lane in each direction is open.

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

Thursday, August 6

• I-55, St. Louis City, 5 p.m. to 5 a.m., one northbound lane closed between Weber Rd. and 4500 Broadway.
• Route 100, St. Louis City, 6 p.m. to 6 a.m., one lane closed from Kingshighway to Vandeventer and Broadway to Jefferson.
• I-270, St. Louis County, 9 p.m. to 5 a.m., southbound ramp to eastbound and westbound I-64 closed.
• I-270, St. Louis County, 8 p.m. to 5 a.m., up to two northbound and southbound lanes closed from Route 340 to I-64.
• Route 30, St. Louis County, 7 a.m. to 3 p.m., one eastbound and westbound lane closed between Route P and Route 21.
• Route 30, St. Louis County, 7 p.m. to 5 a.m., one eastbound and westbound lane closed between I-270 to River Des Peres.
• Route 30, St. Louis County, 7 a.m. to 3 p.m., one eastbound and westbound lane closed from Route 141 and I-270.
• Route 30, St. Louis County, 7 a.m. to 3 p.m., one eastbound and westbound lane closed from Musick to Baptist Church Rd.
• Route 30, St. Louis County, 7 p.m. to 5 a.m., westbound right lane closed from Musick to Baptist Church Road.
• Route 61/67, St. Louis County, 6 a.m. to 3 p.m., one northbound and southbound lane from Meramec River to Lindbergh.
• Route 100, St. Louis County, 7:30 a.m. to 3 p.m., one eastbound lane closed from Mason Lane to Barrett Station Rd.
• Route 100. St. Louis County, 7:30 a.m. to 3 p.m., one eastbound lane closed between Mason Lane and Barrett Station Rd.
• Route 231, St. Louis County, 7:30 a.m. to 3 p.m., one northbound and southbound lane closed from MaryCrest Dr. to Gebhardt Dr.
• Route 231, St. Louis County, 6:30 a.m. to 3 p.m., one southbound lane closed between Pioneer Dr. to Oakmont Terrace Dr.
• Route 267, St. Louis County, 6 a.m. to 3 p.m., one lane closed from Bayless to S. Lindbergh.
• 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., eastbound and westbound lane closed I-170 to 82nd
• Route 366, St. Louis County, 6 a.m. to 3 p.m., one eastbound lane closed from Laclede Station to MacKenzie.
• Route 370, St. Louis County, 6 a.m. to 5 p.m., one eastbound lane in St. Louis County is closed from Route 141 to the I-270 ramps.
• I-64, St. Charles County, 5 a.m. to 12 p.m., one westbound lane closed from Route 94 to Route 364.
• I-64, St. Charles County, 5 a.m. to 3 p.m., one eastbound lane closed intermittently from the I-64/I-70 interchange to the Daniel Boone Bridge.
• 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.
• Route 61, St. Charles County, 9 p.m. to 5 a.m., Route 61 closed at the I-64/70 interchange.
• Route 94, St. Charles County, 9 p.m. to 6 a.m., one lane closed from Little Hills Expressway to Route B.
• Route 370, St. Charles County, 9 a.m. to 5 p.m., one eastbound lane closed from Elm Point to Route 94.
• Route Z, St. Charles County, 9 p.m. to 5 a.m., Route Z closed at I-70.
• Route 30, Franklin County, 6 p.m. to 6 a.m., one eastbound and westbound lane closed between I-44 and St. Clair. A pilot car and flaggers will guide traffic through the work zone.

Friday, August 7

• I-55, St. Louis City, 5 p.m. to 5 a.m., one northbound lane closed between Weber Rd. and 4500 Broadway.
• I-270, St. Louis County, 8 p.m. to 5 a.m., up to two northbound and southbound lanes closed from Route 340 to I-64.
• Route 30, St. Louis County, 7 a.m. to 3 p.m., one eastbound and westbound lane closed from Musick to Baptist Church Rd.
• Route 30, St. Louis County, 7 a.m. to 3 p.m., one eastbound and westbound lane closed between Route P and Route 21.
• Route 30, St. Louis County, 7 p.m. to 5 a.m., one eastbound and westbound lane closed between I-270 to River Des Peres.
• Route 30, St. Louis County, 7 a.m. to 3 p.m., one eastbound and westbound lane closed from Route 141 and I-270.
• Route 61/67, St. Louis County, 6 a.m. to 3 p.m., one northbound and southbound lane from Meramec River to Lindbergh.
• Route 100. St. Louis County, 7:30 a.m. to 3 p.m., one eastbound lane closed between Mason Lane and Barrett Station Rd.
• Route 231, St. Louis County, 7:30 a.m. to 3 p.m., one northbound and southbound lane closed from MaryCrest Dr. to Gebhardt Dr.
• Route 231, St. Louis County, 6:30 a.m. to 3 p.m., one southbound lane closed between Pioneer Dr. to Oakmont Terrace Dr.
• Route 267, St. Louis County, 6 a.m. to 3 p.m., one lane closed from Bayless to S. Lindbergh.
• 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 eastbound and westbound lane closed I-170 to 82nd
• Route 366, St. Louis County, 6 a.m. to 3 p.m., one eastbound lane closed from Laclede Station to MacKenzie.
• Route 370, St. Louis County, 6 a.m. to 5 p.m., one eastbound lane in St. Louis County is closed from Route 141 to the I-270 ramps.
• I-64, St. Charles County, 5 a.m. to 3 p.m., one eastbound lane closed intermittently from the I-64/I-70 interchange to the Daniel Boone Bridge.
• I-64, St. Charles County, 5 a.m. to 3 p.m., one eastbound lane closed from I-70 to Boone Bridge.
• 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, 7 p.m. to 6 p.m., eastbound and westbound I-70 closed at Foristell/Route T/W interchange. I-70 traffic will be detoured up and over the ramps. Route T/W will not have access to 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.
• Route 370, St. Charles County, 9 a.m. to 5 p.m., one eastbound lane closed from Elm Point to Route 94.
• Route 30, Franklin County, 6 p.m. to 6 a.m., one eastbound and westbound lane closed between I-44 and St. Clair. A pilot car and flaggers will guide traffic through the work zone.

Saturday, August 8

• I-64, St. Charles County, 5 a.m. to 3 p.m., one eastbound lane closed intermittently from the I-64/I-70 interchange to the Daniel Boone Bridge.

Sunday, August 9

• There are no scheduled work zones.

Monday, August 10

• I-55, St. Louis City, 5 p.m. to 5 a.m., one northbound lane closed between Weber Rd. and 4500 Broadway.
• Route 100, St. Louis City, 6 p.m. to 6 a.m., one lane closed from Kingshighway to Vandeventer and Broadway to Jefferson.
• I-270, St. Louis County, starting at 5 a.m., southbound ramp to westbound Route 100 (Manchester Road) closed.
• I-270, St. Louis County, 8 p.m. to 5 a.m., up to two northbound and southbound lanes closed from Route 340 to I-64.
• Route 30, St. Louis County, 7 a.m. to 3 p.m., one eastbound and westbound lane closed from Musick to Baptist Church Rd.
• Route 30, St. Louis County, 7 a.m. to 3 p.m., one eastbound and westbound lane closed between Route P and Route 21.
• Route 30, St. Louis County, 7 a.m. to 3 p.m., one eastbound and westbound lane closed from Route 141 and I-270.
• Route 61/67, St. Louis County, 6 a.m. to 3 p.m., one northbound and southbound lane from Meramec River to Lindbergh.
• Route 100. St. Louis County, 7:30 a.m. to 3 p.m., one eastbound lane closed between Mason Lane and Barrett Station Rd.
• Route 231, St. Louis County, 7:30 a.m. to 3 p.m., one northbound and southbound lane closed from MaryCrest Dr. to Gebhardt Dr.
• Route 231, St. Louis County, 6:30 a.m. to 3 p.m., one southbound lane closed between Pioneer Dr. to Oakmont Terrace Dr.
• 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 eastbound and westbound lane closed I-170 to 82nd
• Route 366, St. Louis County, 6 p.m. to 6 a.m., one eastbound and westbound lane closed between St. Louis city limits and Pardee.
• Route 370, St. Louis County, starting at 3 p.m., eastbound exit ramp to southbound I-270 closed.
• Route 370, St. Louis County, 6 p.m. to 5:30 a.m., two eastbound lanes closed from the Missouri River to I-270.
• I-64, St. Charles County, 5 a.m. to 3 p.m., one westbound lane closed from Boone Bridge to Route 364.
• I-64, St. Charles County, 5 a.m. to 3 p.m., one eastbound lane closed from I-70 to Boone Bridge.
• 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 p.m. to 5 a.m., the ramp from westbound I-70 to northbound Route 61 closed.
• Route 370, St. Charles County, 6 a.m. to 5 p.m., one eastbound lane closed from Elm Point to Route 94.
• Route W/T, St. Charles County, 9 p.m. to 5 a.m., one lane closed at the Route W/T interchange.
• Veterans Memorial Parkway, St. Charles County, starting at 7 a.m., closed between South Point Prairie and Hepperman Road.
• I-55, Jefferson County, 8 p.m. to 6 a.m., one southbound lane closed between McNutt and Route A.
• Route 30, Franklin County, 6 p.m. to 6 a.m., one eastbound and westbound lane closed between I-44 and St. Clair. A pilot car and flaggers will guide traffic through the work zone.

Tuesday, August 11

• I-55, St. Louis City, 5 p.m. to 5 a.m., one northbound lane closed between Weber Rd. and 4500 Broadway.
• Route 100, St. Louis City, 6 p.m. to 6 a.m., one lane closed from Kingshighway to Vandeventer and Broadway to Jefferson.
• I-270, St. Louis County, 24 hours, southbound ramp to westbound Route 100 (Manchester Road) closed.
• I-270, St. Louis County, 8 p.m. to 5 a.m., up to two northbound and southbound lanes closed from Route 340 to I-64.
• Route 30, St. Louis County, 7 a.m. to 3 p.m., one eastbound and westbound lane closed from Musick to Baptist Church Rd.
• Route 30, St. Louis County, 7 a.m. to 3 p.m., one eastbound and westbound lane closed between Route P and Route 21.
• Route 30, St. Louis County, 7 a.m. to 3 p.m., one eastbound and westbound lane closed from Route 141 and I-270.
• Route 61/67, St. Louis County, 6 a.m. to 3 p.m., one northbound and southbound lane from Meramec River to Lindbergh.
• Route 231, St. Louis County, 7:30 a.m. to 3 p.m., one northbound and southbound lane closed from MaryCrest Dr. to Gebhardt Dr.
• Route 231, St. Louis County, 6:30 a.m. to 3 p.m., one southbound lane closed between Pioneer Dr. to Oakmont Terrace Dr.
• Route 267, St. Louis County, 6 a.m. to 3 p.m., one lane closed from Bayless to S. Lindbergh.
• 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 eastbound and westbound lane closed I-170 to 82nd
• Route 366, St. Louis County, 6 a.m. to 3 p.m., one eastbound lane closed from Laclede Station to MacKenzie.
• Route 366, St. Louis County, 6 p.m. to 6 a.m., one eastbound and westbound lane closed between St. Louis city limits and Pardee.
• Route 370, St. Louis County, 24 hours, eastbound exit ramp to southbound I-270 closed.
• Route 370, St. Louis County, 6 p.m. to 5:30 a.m., two eastbound lanes closed from the Missouri River to I-270.
• I-64, St. Charles County, 5 a.m. to 3 p.m., one eastbound lane closed intermittently from the I-64/I-70 interchange to the Daniel Boone Bridge.
• I-64, St. Charles County, 5 a.m. to 3 p.m., one eastbound lane closed from I-70 to Boone Bridge.
• 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.
• Route 370, St. Charles County, 6 a.m. to 5 p.m., one eastbound lane closed from Elm Point to Route 94.
• Route W/T, St. Charles County, 9 p.m. to 5 a.m., one lane closed at the Route W/T interchange.
• Veterans Memorial Parkway, St. Charles County, 24 hours, closed between South Point Prairie and Hepperman Road.
• I-55, Jefferson County, 8 p.m. to 6 a.m., one southbound lane closed between McNutt and Route A.
• Route 30, Franklin County, 6 p.m. to 6 a.m., one eastbound and westbound lane closed between I-44 and St. Clair. A pilot car and flaggers will guide traffic through the work zone.

Wednesday, August 12

• I-55, St. Louis City, 5 p.m. to 5 a.m., one northbound lane closed between Weber Rd. and 4500 Broadway.
• Route 100, St. Louis City, 6 p.m. to 6 a.m., one lane closed from Kingshighway to Vandeventer and Broadway to Jefferson.
• I-44, St. Louis County, 9 a.m. to 4 p.m., up to two westbound lanes closed at Berry Road.
• I-270, St. Louis County, 24 hours, southbound ramp to westbound Route 100 (Manchester Road) closed.
• I-270, St. Louis County, 9 p.m. to 5 a.m., northbound ramp to westbound I-64 closed.
• I-270, St. Louis County, 8 p.m. to 5 a.m., up to two northbound and southbound lanes closed from Route 340 to I-64.
• Route 30, St. Louis County, 7 a.m. to 3 p.m., one eastbound and westbound lane closed from Musick to Baptist Church Rd.
• Route 30, St. Louis County, 7 a.m. to 3 p.m., one eastbound and westbound lane closed between Route P and Route 21.
• Route 30, St. Louis County, 7 a.m. to 3 p.m., one eastbound and westbound lane closed from Route 141 and I-270.
• Route 61/67, St. Louis County, 6 a.m. to 3 p.m., one northbound and southbound lane from Meramec River to Lindbergh.
• Route 231, St. Louis County, 7:30 a.m. to 3 p.m., one northbound and southbound lane closed from MaryCrest Dr. to Gebhardt Dr.
• Route 231, St. Louis County, 6:30 a.m. to 3 p.m., one southbound lane closed between Pioneer Dr. to Oakmont Terrace Dr.
• Route 267, St. Louis County, 6 a.m. to 3 p.m., one lane closed from Bayless to S. Lindbergh.
• 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 eastbound and westbound lane closed I-170 to 82nd
• Route 366, St. Louis County, 6 a.m. to 3 p.m., one eastbound lane closed from Laclede Station to MacKenzie.
• Route 366, St. Louis County, 6 p.m. to 6 a.m., one eastbound and westbound lane closed between St. Louis city limits and Pardee.
• Route 370, St. Louis County, 24 hours, eastbound exit ramp to southbound I-270 closed.
• Route 370, St. Louis County, 6 p.m. to 5:30 a.m., two eastbound lanes closed from the Missouri River to I-270.
• I-64, St. Charles County, 5 a.m. to 3 p.m., one eastbound lane closed intermittently from the I-64/I-70 interchange to the Daniel Boone Bridge.
• 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, 7 p.m. to 5 a.m., two westbound lanes closed over Belleau Creek.
• I-70, St. Charles County, 9 p.m. to 5:30 a.m., one eastbound lane and one westbound lane closed from Wentzville Parkway to Route A.
• Route 370, St. Charles County, 6 a.m. to 5 p.m., one eastbound lane closed from Elm Point to Route 94.
• Route W/T, St. Charles County, 9 p.m. to 5 a.m., one lane closed at the Route W/T interchange.
• Veterans Memorial Parkway, St. Charles County, 24 hours, closed between South Point Prairie and Hepperman Road.
• I-55, Jefferson County, 8 p.m. to 6 a.m., one southbound lane closed between McNutt and Route A.
• Route 30, Franklin County, 6 p.m. to 6 a.m., one eastbound and westbound lane closed between I-44 and St. Clair. A pilot car and flaggers will guide traffic through the work zone.

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