St. Louis Work Zones September 21-27

ST. LOUIS – Motorists traveling northbound I-170 this weekend should allow extra time as two lanes south of Route 180 (St. Charles Rock Rd.) will be closed. The lanes will close on Friday, Sept. 22 at 7 p.m. through Monday, Sept. 25 at 5 a.m.

Drivers who use Interstate 270 near I-44 in St. Louis County should also allow extra time or consider alternate routes to avoid ramp closures this weekend.

Crews will close the ramp from southbound I-270 to westbound I-44 on Friday, Sept. 22 at 8 p.m. to place a protective epoxy overlay on the ramp. The ramps to eastbound I-44 will remain open.

During that time, crews will also close the right lane on southbound I-270 near I-44.

All lanes and ramps will reopen by 5 a.m. Monday, September 25.

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 Welcome to Gateway Guide! | Missouri Department of Transportation (modot.org). All work is subject to change and may be shifted due to inclement weather.

Motorists should be aware of the following ongoing closures:

• I-44, St. Louis City, one left lane closed from Cass to south of the Broadway overpass until mid-October 2023.
• I-55, St. Louis City, two left lanes closed northbound and southbound between Lindbergh and Gravois until December 2023.
• I-55, St. Louis City, the ramp from Germania to northbound and the ramp from Loughborough to northbound will be closed through 2023.
• I-55, St. Louis City, the ramp from northbound to Loughborough will be closed through 2023.
• I-55, St. Louis City, the ramp from Lafayette/Truman, the ramp from Arsenal and the ramp from Cherokee to southbound I-55 will be closed through December 2023.
• I-70/44, St. Louis City, Biddle on-ramp to 70/44 closed through October 2023.
• I-44, St. Louis County, northbound outer ramp from Lewis Rd. closed through December.
• I-44, St. Louis County, one lane closed eastbound between Williams Road and Lewis Road through December.
• I-64, St. Louis County, one eastbound lane and one westbound lane closed over Ballas Rd. through mid-October.
• I-70, St. Louis County, southbound lanes of McDonnell Boulevard over I-70 closed through the end of December.
• I-70, St. Louis County, one eastbound lane closed between Route 115 and McDonnell Blvd. through the end of December.
• I-70, St. Louis County, St. Louis Lambert International and Route 115 entrance ramp to eastbound I-70 closed through the end of December.
• I-170, St. Louis County, the Lackland Bridge over the interstate closed through the end of December.
• I-170, St. Louis County, one southbound right lane south of Route 180 closed through the end of December.
• I-270, St. Louis County, the ramp from westbound to northbound Route 367 will be closed through mid-October.
• I-270, St. Louis County, one lane is closed on the one-way outer road (Dunn Road) from New Halls Ferry to Washington/Elizabeth through fall 2023.
• I-270, St. Louis County, Riverview Dr. entrance ramp to eastbound I-270 closed through July 2024.
• I-270, St. Louis County, southbound Riverview Dr. under I-270 closed through 2024.
• I-270, St. Louis County, one southbound lane on New Florissant under the interstate will be closed through October.
• I-270, St. Louis County, the ramp to northbound Route 367 will be closed through mid-October.
• I-270, St. Louis County, one right lane closed on the ramp from southbound to Lemay Ferry through October.
• I-255, St. Louis County, one lane on eastbound and westbound closed between Telegraph Rd. and Illinois through December.
• I-255, St. Louis County, the ramp from westbound to Koch Road is closed through December.
• Route 30, St. Louis County, one westbound lane closed across the Meramec River through October.
• Route 67, St. Louis County, one northbound and southbound lane closed north of Route 94 through the end of December.
• Route 141, St. Louis County, southbound 141 closed between Lakefront and Shoreline Drive through fall 2023.
• Route 340 (Clarkson/Olive), St. Louis County, one westbound lane closed between Old Riverwoods to Appalachian Trail.
• Dunn Rd., St. Louis County, closed intermittently from Linnell to Route 367 through December.
• I-70, St. Charles County, I-70 north outer road to I-70 westbound at Sonderen Slip ramp closed.
• I-70, St. Charles County, eastbound Route K u-turn lane closed.
• Route 364, St. Charles County, one right lane closed westbound between Muegge Road and Arena Parkway through December 2023.
• Route 21, Jefferson County, one lane closed southbound from Meramec Heights to Shady Valley through late fall 2023.
• Route 21, Jefferson County, one lane closed southbound over Route M and Heads Creek until mid-September.
• Route M, Jefferson County, one eastbound and one westbound lane closed from St. Lukes to east of Moss Hollow through December 2023. 

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

Thursday, September 21

• I-55, St. Louis City, 9 a.m. to 12 a.m., two northbound lanes closed between I-255 and Reavis Barracks.
• I-55, St. Louis City, 7 p.m. to 5 a.m., the Weber on ramp to northbound I-55 closed.
• I-55, St. Louis City, 8 p.m. to 5 a.m., closed at River City Blvd./Carondelet. Detour in place.
• I-44, St. Louis County, 7 p.m. to 8 a.m., Lewis Rd. on ramp and up to two lanes closed from Williams Road to Lewis Road.
• I-55, St. Louis County, 8 p.m. to 5 a.m., one left lane closed on westbound I-270 and southbound I-255.
• I-170, St. Louis County, 8 p.m. to 5 a.m., two northbound and southbound lanes closed south of Route 180.
• I-270, St. Louis County, 7 a.m. to 2 p.m., one eastbound and westbound lane closed at I-270 over New Halls Ferry.
• I-270, St. Louis County, 6 a.m. to 3 p.m., one right turn lane on northbound and southbound New Halls Ferry closed.
• I-270, St. Louis County, 6 a.m. to 3 p.m., one lane closed eastbound and westbound at the Route 367 flyover ramp.
• I-270, St. Louis County, 7 p.m. to 6 a.m., up to two lanes closed eastbound and westbound between Hanley and West Florissant.
• I-270, St. Louis County, 6 a.m. to 3 p.m., one right lane closed on Pershall between Hanley and West Florissant.
• I-270, St. Louis County, 9 p.m. to 5 a.m., two lanes closed southbound under I-64.
• I-270, St. Louis County, 8 p.m. to 5 a.m., one right lane closed northbound and southbound at Cragwold.
• Route 100 (Manchester), St. Louis County, 6 a.m. to 4 p.m., one eastbound and westbound lane close from Kortwright to Kenmore.
• Route 100, St. Louis County, 12 a.m. to 5 a.m., one lane closed eastbound and westbound between Kortwright and Sturgis.
• Route 100, St. Louis County, 6 a.m. to 2 p.m., one westbound lane closed from Lindbergh Blvd. to Geyer Rd.
• Route 100, St. Louis County, 4 a.m. to 12 p.m., one eastbound and westbound lane closed from I-270 to Ballas Road.
• Route 100, St. Louis County, 7 p.m. to 5 a.m., one lane closed eastbound and westbound between Kortwright and Sturgis.
• Route 180, St. Louis County, 8 a.m. to 3 p.m., one lane closed between I-70 and I-270.
• Route 109, St. Louis County, 7 p.m. to 5 a.m., one lane closed from Woods Road to Old Manchester Road. Flaggers will direct traffic through the work zone.
• Route 109, St. Louis County, 7 p.m. to 5 a.m., one northbound and southbound lane closed from Route W to Old State Road.
• Route 340 (Clarkson/Olive), St. Louis County, 7 a.m. to 3 p.m. one westbound lane closed from Old Riverwoods Lane to Hilltown Village.
• Route 366 (Watson Rd.), St. Louis County, 7 a.m. to 4 p.m., one eastbound and westbound lane closed at Route P (McKenzie Rd.)
• Route 367, St. Louis County, 9 a.m. to 3 p.m., one lane closed northbound and southbound from I-270 to the city of St. Louis.
• Route 367, St. Louis County, 7 a.m. to 3 p.m., one lane closed under I-270.
• Route P (MacKenzie Road), St. Louis County, 7 a.m. to 4 p.m., one northbound lane closed between Preservation Parkway and Villanova Place.
• Route P (MacKenzie Road), St. Louis County, 7 a.m. to 4 p.m., one southbound lane closed from Hegge Road to Preservation Parkway.
• I-70, St. Charles County, 9 a.m. to 3 p.m., one eastbound lane closed between Cave Springs and Zumbehl.
• I-70, St. Charles County, 6 a.m. to 3 p.m. one westbound lane closed between Zumbehl and Cave Springs.
• I-70, St. Charles County, 10 p.m. to 5 a.m., intermittent full closure westbound I-70 over Cave Springs.
• Route 364, St. Charles County, 9 a.m. to 5 a.m., two eastbound lanes closed west of Arena Parkway.
• Route 21, Jefferson County, 6 a.m. to 6 p.m., one northbound lane closed between Shenk Road and Route 141.
• Route 61/67, Jefferson County, 6 a.m. to 3:30 p.m., one northbound and southbound lane closed from the Meramec River to Church Road.
• Route M, Jefferson County, 6 a.m. to 4 p.m., one eastbound lane closed between St. Lukes and east of Moss Hollow.
• Route 50, Franklin County, 6:30 a.m. to 3 p.m., one eastbound and westbound lane closed from Frank Street to McKinley.

Friday, September 22

• I-55, St. Louis City, 12 a.m. to 5 a.m., two northbound lanes closed between I-255 and Reavis Barracks.
• I-44, St. Louis County, 7 p.m. to 8 a.m., Lewis Rd. on ramp and up to two lanes closed from Williams Road to Lewis Road.
• I-55, St. Louis County, 8 p.m. to 5 a.m., one left lane closed on westbound I-270 and southbound I-255.
• I-270, St. Louis County, 9 p.m. to 5 a.m., two northbound lanes closed over Ladue Rd.
• I-170, St. Louis County, 7 p.m. until 5 a.m. Monday, two northbound right lanes closed south of Route 180.
• I-270, St. Louis County, 7 a.m. to 2 p.m., one eastbound and westbound lane closed at I-270 over New Halls Ferry.
• I-270, St. Louis County, 6 a.m. to 3 p.m., one right turn lane on northbound and southbound New Halls Ferry closed.
• I-270, St. Louis County, 6 a.m. to 3 p.m., one lane closed eastbound and westbound at the Route 367 flyover ramp.
• I-270, St. Louis County, 7 p.m. to 6 a.m., up to two lanes closed eastbound and westbound between Hanley and West Florissant.
• I-270, St. Louis County, 6 a.m. to 3 p.m., two lanes closed on Pershall between Hanley and West Florissant.
• I-270, St. Louis County, 9 p.m. to 5 a.m., two lanes closed southbound under I-64.
• I-270, St. Louis County, 8 p.m. to 5 a.m., one right lane closed northbound and southbound at Cragwold.
• I-270, St. Louis County, 8 p.m. through 5 a.m. Monday, Sept. 25, southbound I-270 ramp to westbound I-44 closed.
• Route 100 (Manchester), St. Louis County, 6 a.m. to 4 p.m., one eastbound and westbound lane close from Kortwright to Kenmore.
• Route 100, St. Louis County, 6 a.m. to 2 p.m., one westbound lane closed from Lindbergh Blvd. to Geyer Rd.
• Route 100, St. Louis County, 4 a.m. to 12 p.m., one eastbound and westbound lane closed from I-270 to Ballas Road.
• Route 180, St. Louis County, 8 a.m. to 3 p.m., one lane closed between I-70 and I-270.
• Route 109, St. Louis County, 7 p.m. to 5 a.m., one lane closed from Woods Road to Old Manchester Road. Flaggers will direct traffic through the work zone.
• Route 109, St. Louis County, 7 p.m. to 5 a.m., one northbound and southbound lane closed from Route W to Old State Road.
• Route 340 (Clarkson/Olive), St. Louis County, 7 a.m. to 3 p.m. one westbound lane closed from Old Riverwoods Lane to Hilltown Village.
• Route 366 (Watson Rd.), St. Louis County, 7 a.m. to 4 p.m., one eastbound and westbound lane closed at Route P (McKenzie Rd.)
• Route 367, St. Louis County, 9 a.m. to 3 p.m.., one lane closed northbound and southbound from I-270 to the city of St. Louis.
• Route 367, St. Louis County, 7 a.m. to 2 p.m., one lane closed under I-270.
• Route P (MacKenzie Road), St. Louis County, 7 a.m. to 4 p.m., one northbound lane closed between Preservation Parkway and Villanova Place.
• Route P (MacKenzie Road), St. Louis County, 7 a.m. to 4 p.m., one southbound lane closed from Hegge Road to Preservation Parkway.
• I-70, St. Charles County, 9 a.m. to 3 p.m., one eastbound lane closed between Cave Springs and Zumbehl.
• I-70, St. Charles County, 6 a.m. to 3 p.m. one westbound lane closed between Zumbehl and Cave Springs.
• I-70, St. Charles County, 10 p.m. to 5 a.m., intermittent full closure eastbound I-70 over Cave Springs.
• Route 364, St. Charles County, 9 a.m. to 5 a.m., two eastbound lanes closed west of Arena Parkway.
• Route 21, Jefferson County, 6 a.m. to 6 p.m., one northbound lane closed between Shenk Road and Route 141.
• Route 61/67, Jefferson County, 6 a.m. to 3:30 p.m., one northbound and southbound lane closed from the Meramec River to Church Road.
• Route M, Jefferson County, 6 a.m. to 4 p.m., one eastbound lane closed between St. Lukes and east of Moss Hollow.
• Route 50, Franklin County, 6:30 a.m. to 3 p.m., one eastbound and westbound lane closed from Frank Street to McKinley.

Saturday, September 23

• I-270, St. Louis County, 7 a.m. to 2 p.m., one eastbound and westbound lane closed at I-270 over New Halls Ferry.
• I-270, St. Louis County, 6 a.m. to 3 p.m., one right turn lane on northbound and southbound New Halls Ferry closed.
• I-270, St. Louis County, 6 a.m. to 3 p.m., one lane closed eastbound and westbound at the Route 367 flyover ramp.
• I-270, St. Louis County, 7 p.m. to 6 a.m., up to two lanes closed eastbound and westbound between Hanley and West Florissant.
• I-270, St. Louis County, 6 a.m. to 3 p.m., one right lane closed on Pershall between Hanley and West Florissant.
• Route 367, St. Louis County, 7 a.m. to 2 p.m., one lane closed under I-270.

Sunday, September 24

• No scheduled work zones.

Monday, September 25

• I-44, St. Louis County, 7 p.m. to 8 a.m., one eastbound and westbound lane closed between Williams Road and the Six Flags exit.
• I-55, St. Louis County, 8 p.m. to 5 a.m., one left lane closed on westbound I-270 and southbound I-255.
• I-55, St. Louis County, 9 a.m. to 3 p.m. and 8 p.m. to 5 a.m., one southbound I-55 lane to eastbound I-255 closed.
• I-55, St. Louis County, 8 p.m. to 5 a.m., one lane closed northbound I-55 to westbound I-270.
• I-270, St. Louis County, 8:30 a.m. to 2 p.m., one northbound lane and shoulder closed just north of Dorsett.
• I-270, St. Louis County, 9 a.m. to 3 p.m. two lanes of Lilac Ave. closed over I-270.
• I-270, St. Louis County, 7 a.m. to 2 p.m., one eastbound and westbound lane closed at I-270 over New Halls Ferry.
• I-270, St. Louis County, 6 a.m. to 3 p.m., one right turn lane on northbound and southbound New Halls Ferry closed
• I-270, St. Louis County, 6 a.m. to 3 p.m., one lane closed eastbound and westbound at the Route 367 flyover ramp.
• I-270, St. Louis County, 7 p.m. to 6 a.m., up to two lanes closed eastbound and westbound between Hanley and West Florissant.
• I-270, St. Louis County, 6 a.m. to 3 p.m., one right lane closed on Pershall between Hanley and West Florissant.
• I-270, St. Louis County, 9 p.m. to 5 a.m., up to three lanes closed southbound under I-64.
• I-270, St. Louis County, 8 p.m. to 5 a.m., one right lane closed northbound and southbound at Cragwold.
• Route 100 (Manchester), St. Louis County, 6 a.m. to 4 p.m., one eastbound and westbound lane close from Kortwright to Kenmore.
• Route 100, St. Louis County, 6 a.m. to 2 p.m., one westbound lane closed from Lindbergh Blvd. to Geyer Rd.
• Route 100, St. Louis County, 4 a.m. to 12 p.m., one eastbound and westbound lane closed from I-270 to Ballas Road.
• Route 180, St. Louis County, 8 a.m. to 3 p.m., one lane closed between I-70 and I-270.
• Route 109, St. Louis County, 7 p.m. to 5 a.m., one lane closed from Woods Road to Old Manchester Road. Flaggers will direct traffic through the work zone.
• Route 109, St. Louis County, 7 p.m. to 5 a.m. and 8 a.m. to 2 p.m., one northbound and southbound lane closed from Route W to Old State Road.
• Route 340 (Clarkson/Olive), St. Louis County, 7 a.m. to 3 p.m. one westbound lane closed from Old Riverwoods Lane to Hilltown Village.
• Route 366 (Watson Rd.), St. Louis County, 7 a.m. to 4 p.m., one eastbound and westbound lane closed at Route P (McKenzie Rd.)
• Route 367, St. Louis County, 7 a.m. to 2 p.m., one lane closed under I-270.
• Route P (MacKenzie Road), St. Louis County, 7 a.m. to 4 p.m., one northbound lane closed between Preservation Parkway and Villanova Place.
• Route P (MacKenzie Road), St. Louis County, 7 a.m. to 4 p.m., one southbound lane closed from Hegge Road to Preservation Parkway.
• I-70, St. Charles County, 9 a.m. to 3 p.m., one eastbound lane closed between Cave Springs and Zumbehl.
• I-70, St. Charles County, 6 a.m. to 3 p.m. one westbound lane closed between Zumbehl and Cave Springs.
• Route 364, St. Charles County, 9 a.m. to 5 a.m., two eastbound lanes closed west of Arena Parkway.
• I-55, Jefferson County, 7 a.m. to 4 p.m., one northbound 3rd Street lane closed under I-55.
• Route 21, Jefferson County, 6 a.m. to 6 p.m., one northbound lane closed between Shenk Road and Route 141.
• Route 61/67, Jefferson County, 6 a.m. to 3:30 p.m., one northbound and southbound lane closed from the Meramec River to Church Road.
• Route M, Jefferson County, 6 a.m. to 4 p.m., one eastbound lane closed between St. Lukes and east of Moss Hollow.
• Route 50, Franklin County, 6:30 a.m. to 3 p.m., one eastbound and westbound lane closed from Frank Street to McKinley. 

Tuesday, September 26

• I-44, St. Louis County, 7 p.m. to 8 a.m., one eastbound and westbound lane closed between Williams Road and the Six Flags exit.
• I-55, St. Louis County, 8 p.m. to 5 a.m., one left lane closed on westbound I-270 and southbound I-255.
• I-55, St. Louis County, 9 a.m. to 3 p.m. and 8 p.m. to 5 a.m., one southbound I-55 lane to eastbound I-255 closed.
• I-55, St. Louis County, 8 p.m. to 5 a.m., one lane closed northbound I-55 to westbound I-270.
• I-270, St. Louis County, 9 a.m. to 3 p.m. two lanes of Lilac Ave. closed over I-270.
• I-270, St. Louis County, 7 a.m. to 2 p.m., one eastbound and westbound lane closed at I-270 over New Halls Ferry.
• I-270, St. Louis County, 6 a.m. to 3 p.m., one right turn lane on northbound and southbound New Halls Ferry closed
• I-270, St. Louis County, 6 a.m. to 3 p.m., one lane closed eastbound and westbound at the Route 367 flyover ramp.
• I-270, St. Louis County, 7 p.m. to 6 a.m., up to two lanes closed eastbound and westbound between Hanley and West Florissant.
• I-270, St. Louis County, 6 a.m. to 3 p.m., one right lane closed on Pershall between Hanley and West Florissant.
• I-270, St. Louis County, 9 p.m. to 5 a.m., two lanes closed southbound under I-64.
• I-270, St. Louis County, 8 p.m. to 5 a.m., one right lane closed northbound and southbound at Cragwold.
• Route 100 (Manchester), St. Louis County, 6 a.m. to 4 p.m., one eastbound and westbound lane close from Kortwright to Kenmore.
• Route 100, St. Louis County, 6 a.m. to 2 p.m., one westbound lane closed from Lindbergh Blvd. to Geyer Rd.
• Route 100, St. Louis County, 4 a.m. to 12 p.m., one eastbound and westbound lane closed from I-270 to Ballas Road.
• Route 180, St. Louis County, 8 a.m. to 3 p.m., one lane closed between I-70 and I-270.
• Route 109, St. Louis County, 7 p.m. to 5 a.m., one lane closed from Woods Road to Old Manchester Road. Flaggers will direct traffic through the work zone.
• Route 109, St. Louis County, 7 p.m. to 5 a.m. and 8 a.m. to 2 p.m., one northbound and southbound lane closed from Route W to Old State Road.
• Route 340 (Clarkson/Olive), St. Louis County, 7 a.m. to 3 p.m. one westbound lane closed from Old Riverwoods Lane to Hilltown Village.
• Route 366 (Watson Rd.), St. Louis County, 7 a.m. to 4 p.m., one eastbound and westbound lane closed at Route P (McKenzie Rd.)
• Route 367, St. Louis County, 7 a.m. to 3 p.m., one lane closed under I-270.
• Route P (MacKenzie Road), St. Louis County, 7 a.m. to 4 p.m., one northbound lane closed between Preservation Parkway and Villanova Place.
• Route P (MacKenzie Road), St. Louis County, 7 a.m. to 4 p.m., one southbound lane closed from Hegge Road to Preservation Parkway.
• I-70, St. Charles County, 9 a.m. to 3 p.m., one eastbound lane closed between Cave Springs and Zumbehl.
• I-70, St. Charles County, 6 a.m. to 3 p.m. one westbound lane closed between Zumbehl and Cave Springs.
• Route 364, St. Charles County, 9 a.m. to 5 a.m., two eastbound lanes closed west of Arena Parkway.
• I-55, Jefferson County, 7 a.m. to 4 p.m., one northbound 3rd lane closed under I-55.
• Route 21, Jefferson County, 6 a.m. to 6 p.m., one northbound lane closed between Shenk Road and Route 141.
• Route 61/67, Jefferson County, 6 a.m. to 3:30 p.m., one northbound and southbound lane closed from the Meramec River to Church Road.
• Route M, Jefferson County, 6 a.m. to 4 p.m., one eastbound lane closed between St. Lukes and east of Moss Hollow.
• Route 50, Franklin County, 6:30 a.m. to 3 p.m., one eastbound and westbound lane closed from Frank Street to McKinley.

Wednesday, September 27

• I-55, St. Louis County, 8 p.m. to 5 a.m., one left lane closed on westbound I-270 and southbound I-255.
• I-55, St. Louis County, 9 a.m. to 3 p.m. and 8 p.m. to 5 a.m., one southbound I-55 lane to eastbound I-255 closed.
• I-55, St. Louis County, 8 p.m. to 5 a.m., one lane closed northbound I-55 to westbound I-270.
• I-70, St. Louis County, 9 a.m. to 3 p.m., one westbound lane closed over the Missouri River.
• I-270, St. Louis County, 7 a.m. to 2 p.m., one eastbound and westbound lane closed at I-270 over New Halls Ferry.
• I-270, St. Louis County, 6 a.m. to 3 p.m., one right turn lane on northbound and southbound New Halls Ferry closed
• I-270, St. Louis County, 6 a.m. to 3 p.m., one lane closed eastbound and westbound at the Route 367 flyover ramp.
• I-270, St. Louis County, 7 p.m. to 6 a.m., up to two lanes closed eastbound and westbound between Hanley and West Florissant.
• I-270, St. Louis County, 6 a.m. to 3 p.m., one right lane closed on Pershall between Hanley and West Florissant.
• I-270, St. Louis County, 9 p.m. to 5 a.m., two lanes closed southbound under I-64.
• I-270, St. Louis County, 8 p.m. to 5 a.m., one right lane closed northbound and southbound at Cragwold.
• I-270, St. Louis County, 8:30 a.m. to 2 p.m., one southbound lane closed south of McKelvey.
• Route 100 (Manchester), St. Louis County, 6 a.m. to 4 p.m., one eastbound and westbound lane close from Kortwright to Kenmore.
• Route 100, St. Louis County, 6 a.m. to 2 p.m., one westbound lane closed from Lindbergh Blvd. to Geyer Rd.
• Route 100, St. Louis County, 4 a.m. to 12 p.m., one eastbound and westbound lane closed from I-270 to Ballas Road.
• Route 180, St. Louis County, 8 a.m. to 3 p.m., one lane closed between I-70 and I-270.
• Route 109, St. Louis County, 7 p.m. to 5 a.m., one lane closed from Woods Road to Old Manchester Road. Flaggers will direct traffic through the work zone.
• Route 109, St. Louis County, 7 p.m. to 5 a.m. and 8 a.m. to 2 p.m., one northbound and southbound lane closed from Route W to Old State Road.
• Route 340 (Clarkson/Olive), St. Louis County, 7 a.m. to 3 p.m. one westbound lane closed from Old Riverwoods Lane to Hilltown Village.
• Route 366 (Watson Rd.), St. Louis County, 7 a.m. to 4 p.m., one eastbound and westbound lane closed at Route P (McKenzie Rd.)
• Route 367, St. Louis County, 7 a.m. to 3 p.m., one lane closed under I-270.
• Route P (MacKenzie Road), St. Louis County, 7 a.m. to 4 p.m., one northbound lane closed between Preservation Parkway and Villanova Place.
• Route P (MacKenzie Road), St. Louis County, 7 a.m. to 4 p.m., one southbound lane closed from Hegge Road to Preservation Parkway.
• I-70, St. Charles County, 9 a.m. to 3 p.m., one eastbound lane closed between Cave Springs and Zumbehl.
• I-70, St. Charles County, 6 a.m. to 3 p.m. one westbound lane closed between Zumbehl and Cave Springs.
• Route 364, St. Charles County, 9 a.m. to 5 a.m., two eastbound lanes closed west of Arena Parkway.
• I-55, Jefferson County, 7 a.m. to 4 p.m., one northbound 3rd lane closed under I-55.
• Route 21, Jefferson County, 6 a.m. to 6 p.m., one northbound lane closed between Shenk Road and Route 141.
• Route 61/67, Jefferson County, 6 a.m. to 3:30 p.m., one northbound and southbound lane closed from the Meramec River to Church Road.
• Route M, Jefferson County, 6 a.m. to 4 p.m., one eastbound lane closed between St. Lukes and east of Moss Hollow.
• Route 50, Franklin County, 6:30 a.m. to 3 p.m., one eastbound and westbound lane closed from Frank Street to McKinley.

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