The Liberty Tunnel, which links Downtown to the South Hills, will close inbound from 8 p.m. to 5 a.m. beginning Monday and through Friday.

The tunnel has closed several times in recent months as workers from Pittsburgh-based Mosites Construction continue a $3.47 million roof replacement project. PennDOT expects to complete the project by next spring.

Commuters can follow a posted detour next week via Saw Mill Run Boulevard, the left exit at Parkway West/Route 19 South toward Carnegie/Airport/West End, Exit 69A toward US 19 South/Banksville Road, and I-376 eastbound through the Fort Pitt Tunnel.

Western Pennsylvanians should also watch out for the following traffic disruptions next week:

Pittsburgh

• Irregular single-lane restrictions will take place on North Dallas Avenue in Point Breeze North on weekdays any time between 9 a.m. and 3 p.m. through early October.

• Shoulder closures will take place between the right-hand off-ramp northbound on Route 28 and Chestnut Street beginning Monday and daily from 9 a.m. to 3 p.m. through Friday. Crews are installing safety equipment to detect wrong-way drivers as part of a $4.8 million project.

Allegheny County

• Plum: Hulton Road will remain closed to traffic between Eastern Avenue and Morath Lane around-the-clock through Friday, October 16. Crews are conducting slide repairs. Commuters can follow a posted detour via Allegheny River Boulevard, Sandy Creek Road and Verona Road.

• Marshall and Franklin Park: Southbound I-79 will be reduced to a single lane near the Route 910/Wexford (Exit 73) interchange on Monday from 7 p.m. through 6 a.m. The interstate will be reduced to a single lane in both directions near the Route 910/Wexford (Exit 73) interchange during the same hours on Wednesday. Workers are continuing the $46.5 million Wexford Interchange Project.

• Hampton: McCully Road is closed between Kenson Drive and Topnick Drive until 5 a.m. on Monday. Workers are continuing a $10.57 million paving project. Commuters can follow a posted detour via Route 8, Harts Run Road and Middle Road.

• Richland: Single-lane alternating traffic will take place on Route 910 between Middle Road and Saxonburg Boulevard from 6 a.m. until 6 p.m. on Saturday and Sunday. Workers are continuing a $10.4 million paving project. Flaggers will be on site to direct traffic.

• Emsworth: Route 65 will have lane restrictions at the intersection with Locust Street from 7 p.m. to 5 a.m. Monday through Wednesday.

• Green Tree: Lane restrictions will take place on Mansfield Avenue between Greentree Road and Poplar Street beginning on Monday and from 9 a.m. to 3 p.m. daily through Friday. Crews are restoring pavement.

Butler County

• Jefferson: Dinnerbell Road is closed between Victory Road and Frazier Road around the clock through October 16. Workers are repairing a railroad tunnel on behalf of the Bessemer and Lake Erie Railroad. Commuters on the west side of the tracks can follow a posted detour via Route 8, while those on the east side can take West Main Street.

Fayette County

• Upper Tyrone and Bullskin: Single-lane restrictions will take place on Route 119 between the McClure Road intersection and the Kingview/Crossroads intersection beginning on Monday at 7 p.m. and through Friday at 11 p.m. Crews are reconstructing an interchange in the area.

Greene County

• Morris: Route 18 will close between Mankey Road and Beulah Ridge Road beginning on Monday and through late December. Crews are performing slide repairs as part of a $7.5 million infrastructure project. Commuters can follow a posted detour via Route 221 and Route 19.

Washington County

• Washington: Single-lane restrictions will take place at the intersection of Route 18 and Route 2001 from 6 a.m. to 6 p.m. on weekdays between Thursday and Monday, Sept. 28. Workers are performing milling, paving and line painting as part of a $2.25 million bridge replacement project.

Westmoreland County

• Smithton: A portion of 2nd Street will close near the railroad crossing beginning on Wednesday at 6 a.m. and through Saturday at 6 a.m. Commuters can follow a posted detour via Route 981, Stahl Road, Jacobs Creek Road and River Road.