St. Louis Work Zones September 10-16

ST. LOUIS - Crews with the Improve I-70 Warrenton to Wentzville Project will shift all eastbound Interstate 70 lanes to the left and reduce lane widths to 10-foot lanes at Route Z starting overnight from 9 p.m. Monday, September 14. This lane shift and width reduction will be in place by the morning commute Tuesday, September 15 and remain in place through spring 2027. All work is weather permitting.

In addition to the lane shifts and lane reductions, the eastbound I-70 exit ramp to Route Z (exit 209) will be closed for 30 days starting at 9 p.m. Wednesday, September 9. Crews will be working on connecting the new paving to the interstate and exit ramp.

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 4 p.m. Saturday.
• Route 61/67, St. Louis County, one southbound lane closed at Meramec River to Lindbergh.
• 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 100, St. Louis County, one eastbound and westbound lane closed from Mason Lane to Barrett Station Road.
• Route 100, St. Louis County, one eastbound and westbound lane closed from Weidman Road 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.
• Route D, St. Louis County, one lane closed west of Woodson through October.
• I-70, St. Charles County, the eastbound I-70 ramp to Route Z 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.
• 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, September 10

• I-64, St. Louis City, 9 a.m. to 2 p.m., one westbound lane closed at the Poplar Street Bridge.
• I-170, St. Louis County, 9 a.m. to 2 p.m., one northbound and southbound lane closed from I-64 to I-270.
• Route 30, St. Louis County, 7 a.m. to 3 p.m., various single lane closures at Valcour Avenue.
• Route 30, S. Louis County, 7 a.m. to 3 p.m., various single lane closures between Route 141 and River Des Peres.
• 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 61, St. Louis County, 9 a.m. to 2 p.m., one southbound lane closed at Lindbergh Tunnel.
• 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, 8 p.m. to 5 a.m., one eastbound lane closed over Des Peres Road and I-270.
• Route 100, St. Louis County, 8 p.m. to 5 a.m., one eastbound lane closed over Des Peres Road and I-270.
• Route 231, St. Louis County, 7 p.m. to 5 a.m., one northbound and southbound lane closed at Tori Pines to Gebhardt Drive.
• 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 at I-270 to eastbound North Office Parkway.
• Route 340, St. Louis County, 7 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 a.m. to 3 p.m., one westbound lane closed from New Sappington to Sturdy.
• Route 370, St. Louis County, 6 p.m. to 5:30 a.m., one eastbound and westbound lane closed from Missouri River to I-270.
• Route 370, St. Louis City, the Missouri Bottom to westbound Route 370 lane and ramp closed 24 hours.
• I-64, St. Charles County, 8 p.m. to 5:30 a.m., one eastbound lane closed between Prospect Road to Route K.
• I-64, St. Charles County, 8 p.m. to 9 a.m., one westbound lane closed between Route K and Prospect Road.
• I-64, St. Charles County, 8 a.m. to 3 p.m., one lane closed on the North Outer Road (Technology Drive) from Phoenix Parkway to Dardenne Creek. Flaggers will direct traffic through the work zone.
• I-70, St. Charles County, 9 p.m. to 5:30 p.m., up to three lanes closed westbound from Fifth Street to Lake St. Louis Blvd.
• I-70, St. Charles County, 8:30 p.m. to 5:30 a.m., one lane closed along Spencer Loop South to Executive Centre Parkway.
• 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 5:30 a.m., one westbound lane closed from Route A to Wentzville Parkway.
• Route 30, Jefferson County, 3 p.m. to 3 a.m., one lane closed from Route NN/B and Route PP.
• Route PP, Jefferson County, 7 a.m. to 5 p.m., one lane closed at various locations

Friday, September 11

• I-64, St. Louis City, 9 a.m. to 2 p.m., one westbound lane closed at the Poplar Street Bridge.
• I-170, St. Louis County, 9 a.m. to 2 p.m., one southbound lane closed from I-64 to I-270.
• Route 30, St. Louis County, 7 a.m. to 3 p.m., various single lane closures at Valcour Avenue.
• Route 30, St. Louis County, 7 a.m. to 3 p.m., various single lane closures between Route 141 and River Des Peres.
• 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 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, 8 p.m. to 5 a.m., one eastbound lane closed over Des Peres Road and I-270.
• Route 231, St. Louis County, 7 p.m. to 5 a.m., one northbound and southbound lane closed at Tori Pines to Gebhardt Drive.
• Route 267, St. Louis County, 6 a.m. to 12 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 at I-270 to eastbound North Office Parkway.
• Route 340, St. Louis County, 7 a.m. to 3 p.m., one eastbound and westbound lane closed I-170 to 82nd
• Route 370, St. Louis County, 6 p.m. to 5:30 a.m., one eastbound and westbound lane closed from Missouri River to I-270.
• Route 366, St. Louis County, 6 a.m. to 12 p.m., one eastbound lane closed from Laclede Station to MacKenzie.
• I-64, St. Charles County, 8 p.m. to 5:30 a.m., one eastbound lane closed between Prospect Road to Route K.
• I-64, St. Charles County, 8 p.m. to 9 a.m., one westbound lane closed between Route K and Prospect Road.
• I-64, St. Charles County, 8 p.m. to 5:30 a.m., one eastbound and westbound lane closed from I70 to Prospect Road.
• I-64, St. Charles County, 8 a.m. to 3 p.m., one lane closed on the North Outer Road (Technology Drive) from Phoenix Parkway to Dardenne Creek. Flaggers will direct traffic through the work zone.
• I-70, St. Charles County, 9 p.m. to 5:30 p.m., up to three lanes closed westbound from Fifth Street to Lake St. Louis Blvd.
• I-70, St. Charles County, 8:30 p.m. to 5:30 a.m., one lane closed along Spencer Loop South to Executive Centre Parkway.
• 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 5:30 a.m., one westbound lane closed from Route A to Wentzville Parkway.
• I-70, St. Charles County, 8 p.m. to 8 a.m., one eastbound lane and off-ramp closed to Wentzville Parkway.
• Route 30, Jefferson County, 3 p.m. to 3 a.m., one lane closed from Route NN/B and Route PP.
• Route PP, Jefferson County, 7 a.m. to 5 p.m., one lane closed at various locations

Saturday, September 12

• I-64, St. Louis City, 9 a.m. to 2 p.m., one westbound lane closed at the Poplar Street Bridge.
• I-64, St. Charles County, 8 p.m. to 5:30 a.m., one eastbound lane closed between Prospect Road to Route K.
• I-64, St. Charles County, 8 p.m. to 9 a.m., one westbound lane closed between Route K and Prospect Road.
• I-64, St. Charles County, 8 p.m. to 5:30 a.m., one eastbound and westbound lane closed from I70 to Prospect Road.
• 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 5:30 a.m., one westbound lane closed from Route A to Wentzville Parkway.
• I-70, St. Charles County, 8 p.m. to 8 a.m., one eastbound lane and off-ramp closed to Wentzville Parkway.

Sunday, September 13

• I-64, St. Louis City, 6 a.m. to 2 p.m., one eastbound lane closed at the Poplar Street Bridge.

Monday, September 14

• I-64, St. Louis City, 6 a.m. to 2 p.m., one eastbound lane closed at the Poplar Street Bridge.
• I-170, St. Louis County, 9 a.m. to 2 p.m., one southbound lane closed from I-64 to I-270.
• Route 30, St. Louis County, 7 a.m. to 3 p.m., various single lane closures at Valcour Avenue.
• Route 30, St. Louis County, 7 a.m. to 3 p.m., various single lane closures between Route 141 and River Des Peres.
• 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 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, 8 p.m. to 5 a.m., one eastbound lane closed over Des Peres Road and I-270.
• Route 231, St. Louis County, 7 p.m. to 5 a.m., one northbound and southbound lane closed at Tori Pines to Gebhardt Drive.
• Route 340, St. Louis County, 9 a.m. to 3 p.m., one eastbound and westbound lane closed at I-270 to eastbound North Office Parkway.
• Route 340, St. Louis County, 7 a.m. to 3 p.m., one eastbound and westbound lane closed I-170 to 82nd
• Route 370, St. Louis County, 6 p.m. to 5:30 a.m., one eastbound and westbound lane closed from Missouri River to I-270.
• Route 370, St. Louis County, starting at 3 p.m. to 24 hours continuous, one eastbound lane closed to Missouri Bottom Road.
• I-64, St. Charles County, 8 p.m. to 5:30 a.m., one eastbound lane closed between Prospect Road to Route K.
• I-64, St. Charles County, 8 p.m. to 9 a.m., one westbound lane closed between Route K and Prospect Road.
• I-64, St. Charles County, 8 p.m. to 5:30 a.m., one eastbound and westbound lane closed from I70 to Prospect Road.
• I-64, St. Charles County, 8 a.m. to 3 p.m., one lane closed on the North Outer Road (Technology Drive) from Phoenix Parkway to Dardenne Creek. Flaggers will direct traffic through the work zone.
• I-70, St. Charles County, 8:30 p.m. to 5:30 a.m., one lane closed along Spencer Loop South to Executive Centre Parkway.
• 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 5:30 a.m., one westbound lane closed from Route A to Wentzville Parkway.
• I-70, St. Charles County, 9 p.m. to 5 a.m., one eastbound lane closed for 15 minutes intermittently from Wentzville Parkway to Route Z.
• I-70, St. Charles County, 9 p.m. to 7 a.m., one westbound lane closed for 15 minutes intermittently from Wentzville Parkway to Route Z.
• Route 30, Jefferson County, 3 p.m. to 3 a.m., one lane closed from Route NN/B and Route PP.
• Route PP, Jefferson County, 7 a.m. to 5 p.m., one lane closed at various locations

Tuesday, September 15

• I-64, St. Louis City, 6 a.m. to 2 p.m., one eastbound lane closed at the Poplar Street Bridge.
• I-170, St. Louis County, 9 a.m. to 2 p.m., one southbound lane closed from I-64 to I-270.
• Route 30, St. Louis County, 7 a.m. to 3 p.m., various single lane closures at Valcour Avenue.
• Route 30, St. Louis County, 7 a.m. to 3 p.m., various single lane closures between Route 141 and River Des Peres.
• 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 61, St. Louis County, 9 a.m. to 12 p.m., one northbound lane closed at Lindbergh Tunnel.
• Route 61, St. Louis County, 10 a.m. to 4 p.m., one southbound lane closed at Lindbergh Tunnel.
• 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, 8 p.m. to 5 a.m., one eastbound lane closed over Des Peres Road and I-270.
• Route 231, St. Louis County, 7 p.m. to 5 a.m., one northbound and southbound lane closed at Tori Pines to Gebhardt Drive.
• 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 at I-270 to eastbound North Office Parkway.
• Route 340, St. Louis County, 7 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 a.m. to 3 p.m., one westbound lane closed from New Sappington to Sturdy.
• Route 370, St. Louis County, 6 p.m. to 5:30 a.m., one eastbound and westbound lane closed from Missouri River to I-270.
• I-64, St. Charles County, 8 p.m. to 5:30 a.m., one eastbound lane closed between Prospect Road to Route K.
• I-64, St. Charles County, 8 p.m. to 9 a.m., one westbound lane closed between Route K and Prospect Road.
• I-64, St. Charles County, 8 p.m. to 5:30 a.m., one eastbound and westbound lane closed from I70 to Prospect Road.
• I-64, St. Charles County, 8 a.m. to 3 p.m., one lane closed on the North Outer Road (Technology Drive) from Phoenix Parkway to Dardenne Creek. Flaggers will direct traffic through the work zone.
• I-70, St. Charles County, 8:30 p.m. to 5:30 a.m., one lane closed along Spencer Loop South to Executive Centre Parkway.
• 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 5:30 a.m., one westbound lane closed from Route A to Wentzville Parkway.
• I-70, St. Charles County, 9 p.m. to 5 a.m., one eastbound lane closed for 15 minutes intermittently from Wentzville Parkway to Route Z.
• I-70, St. Charles County, 9 p.m. to 7 a.m., one westbound lane closed for 15 minutes intermittently from Wentzville Parkway to Route Z.
• Route 30, Jefferson County, 3 p.m. to 3 a.m., one lane closed from Route NN/B and Route PP.
• Route PP, Jefferson County, 7 a.m. to 5 p.m., one lane closed at various locations

Wednesday, September 16

• I-64, St. Louis City, 6 a.m. to 2 p.m., one eastbound lane closed at the Poplar Street Bridge.
• I-64, St. Louis City, 9 a.m. to 3 p.m., one eastbound lane closed from Hampton to Jefferson.
• I-64, St. Louis City, 8 a.m. to 3 p.m., one lane closed from Jefferson to Broadway.
• I-170, St. Louis County, 9 a.m. to 2 p.m., one southbound lane closed from I-64 to I-270.
• Route 30, St. Louis County, 7 a.m. to 3 p.m., various single lane closures at Valcour Avenue.
• Route 30, St. Louis County, 7 a.m. to 3 p.m., various single lane closures between Route 141 and River Des Peres.
• 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 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, 8 p.m. to 5 a.m., one eastbound lane closed over Des Peres Road and I-270.
• Route 231, St. Louis County, 7 p.m. to 5 a.m., one northbound and southbound lane closed at Tori Pines to Gebhardt Drive.
• 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 at I-270 to eastbound North Office Parkway.
• Route 340, St. Louis County, 7 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 a.m. to 3 p.m., one westbound lane closed from New Sappington to Sturdy.
• Route 370, St. Louis County, 6 p.m. to 5:30 a.m., one eastbound and westbound lane closed from Missouri River to I-270.
• I-64, St. Charles County, 8 p.m. to 5:30 a.m., one eastbound and westbound lane closed from I70 to Prospect Road.
• I-64, St. Charles County, 8 p.m. to 5:30 a.m., one eastbound lane closed between Prospect Road to Route K.
• I-64, St. Charles County, 8 p.m. to 9 a.m., one westbound lane closed between Route K and Prospect Road.
• I-64, St. Charles County, 8 a.m. to 3 p.m., one lane closed on the North Outer Road (Technology Drive) from Phoenix Parkway to Dardenne Creek. Flaggers will direct traffic through the work zone.
• I-70, St. Charles County, 8:30 p.m. to 5:30 a.m., one lane closed along Spencer Loop South to Executive Centre Parkway.
• 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 5:30 a.m., one westbound lane closed from Route A to Wentzville Parkway.
• I-70, St. Charles County, 9 p.m. to 5 a.m., one eastbound lane closed for 15 minutes intermittently from Wentzville Parkway to Route Z.
• I-70, St. Charles County, 9 p.m. to 7 a.m., one westbound lane closed for 15 minutes intermittently from Wentzville Parkway to Route Z.
• Route 30, Jefferson County, 3 p.m. to 3 a.m., one lane closed from Route NN/B and Route PP.
• Route PP, Jefferson County, 7 a.m. to 5 p.m., one lane closed at various locations

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