PennDOT is planning “intermittent traffic stoppages” for up to 15 minutes in the Fort Pitt Tunnel and Liberty Tunnel next week.

Stoppages will take place between 10 a.m. and 2 p.m. on Wednesday and Thursday, PennDOT spokeswoman Nicole Haney said in a release. Crews will be conducting survey work.

While closures will occur in both directions of the tunnels, they will not be simultaneous, Haney said.

The work is dependent on the weather .

Western Pennsylvanians should also keep an eye out for the following upcoming traffic restrictions:

Pittsburgh

• Single-lane restrictions will take place in both directions of the Highland Park Bridge beginning Tuesday and from 9 a.m. to 3 p.m. daily through Thursday. Crews are inspecting the bridge.

Allegheny County

• Penn Hills: Single-lane, alternating traffic will take place on Shannon Road between Hamil Road and Second Avenue and Poketa Road between Hulton Road and Verona Road on weekdays from 8 a.m. to 4 p.m. and 6 p.m. to 6 a.m., beginning Tuesday and through next summer. Workers are completing a $7.61 million paving project.

• Bethel Park: Shoulder restrictions will take place at the intersection of Route 88 and Brightwood Road beginning Tuesday and from 9 a.m. to 3 p.m. through mid-September. Crews are conducting excavation work.

• East Deer, Tarentum, Brackenridge and Harrison: Lane restrictions will take place on Freeport Road, East 10th Avenue and East Seventh Avenue beginning Wednesday on weekdays from 8 a.m. until 6 p.m. through mid-October. Crews are completing a paving project worth $7.78 million.

• Elizabeth: Single-lane alternating traffic will take place on Route 48 between Mill Hill Road and Simpson Hollow Road beginning Tuesday and from 8 a.m. to 4 p.m. on weekdays through late October. Crews are replacing a gas line. Flaggers will be on site to direct traffic.

• Monroeville: Alternating lane restrictions will take place on Thompson Run Road between Frey Road and Old William Penn Highway beginning Wednesday and from 8 a.m. to 4 p.m. on weekdays through Tuesday, Sept. 15. Workers are drilling at the site.

• Shaler and Millvale: Short-term lane restrictions and shoulder closures will take place on Evergreen Avenue beginning Wednesday and on weekdays as needed through late November. Workers are installing traffic signals and ADA-compliant curb ramps.

Butler County

• Clinton and Buffalo: Short-term lane closures will take place on Route 228 (Ekastown Road) between the intersections of Saxonburg Boulevard and Sarver Road through next spring. Workers are completing a $17.3 million utility project. Flaggers will be on site to direct traffic.

• Muddy Creek: Lane restrictions will take place westbound on Route 422 between Monday and Friday and eastbound from Monday, Sept. 21 through Friday, Sept. 25. Crews are completing deck repairs.

• Zelienople: The railroad crossing on Route 288 (New Castle Road) will close on Saturday, Sept. 19 at 6 a.m. and through Tuesday, Sept. 22 at 8 a.m. Workers are replacing the crossing. Commuters can follow a detour via Route 588, Hartzel School Road and Route 68.

Fayette County

• South Union: Single-lane restrictions will take place on Bailey Lane/Redstone Furnace Road beginning Tuesday and daily from 7 a.m. to 5 a.m. through the end of September. A contractor is installing crossing signals along the Sheepskin Trail.

Washington County

• Washington: Single-lane restrictions will take place at the intersection of South Street and South Main Street beginning Tuesday and from 7 a.m. to 5 p.m. daily through Friday. Workers are completing asphalt patching as part of a box culvert replacement project worth $2.25 million. Flaggers will be on site to direct traffic.

• Buffalo: Pleasant Valley Road will close at the intersection of Clark Road beginning Tuesday at 7 a.m. and through early November. Crews are conducting slide repairs. Commuters can follow a posted detour via Route 221, Route 40 and McKee Road.