PennDOT plans mobile lane restrictions along Interstate 279 next week as crews prepare for preservation work on the Fort Duquesne Bridge.

Commuters can expect restrictions in the following areas from 7 p.m. to 5 a.m. beginning Monday through Sept. 25:

• Northbound and southbound on the Fort Duquesne Bridge

• Northbound and southbound on I-279 between Route 28 and Route 65

• Northbound and southbound on Route 65 between the West End Bridge and the merge with I-279

• The ramps that carry Route 65 traffic to and from the Fort Duquesne Bridge

• The ramp from Fort Duquesne Bridge to Reedsdale Street/North Shore (Exit 1B)

PennDOT began its $12.17 million preservation project in June. The project will include steel repairs, joint replacements and deck and barrier sealing, among other tasks.

While PennDOT has planned for most of the work to take place outside of peak travel hours, the agency anticipates a future one-week closure of the left-hand ramp from I-279 to the North Shore and a two-week closure of westbound Reedsdale Street, also on the North Shore.

Work will conclude in the fall of 2027.

Western Pennsylvanians should watch out for the following additional traffic disruptions:

Pittsburgh

• Lane restrictions will take place on Penn Avenue between East End Avenue and Trenton Avenue beginning on Monday and from 9 a.m. to 3 p.m. daily through mid-December. Crews are conducting gas line repairs. Flaggers will be on-site to direct traffic.

• Traffic stoppages of around 15 minutes will take place on more than a half-dozen ramps on Route 28 around the city from 8 p.m. to 5 a.m. on Tuesday and Wednesday. Workers are testing wrong-way detection systems as part of a $4.8 million safety project.

Allegheny County

• Upper St. Clair: Washington Road will close in both directions between Boyce Road and the intersection of McLaughlin Run Road and McMurray Road from 2 a.m. to 10 p.m. on Sunday. Crews are preparing to replace the Country Club Drive Bridge. Commuters can follow a posted detour via McLaughlin Run Road, Lesnett Road, Mayview Road and Boyce Road.

• Sewickley Heights: A lane restriction on Little Sewickley Creek Road at the intersection with Backbone Road began Friday morning and runs through mid-October. Workers are conducting slide remediation.

• Collier: Single-lane restrictions will take place on I-79 on the bridge over Robinson Run near the Carnegie interchange (Exit 57) on Saturday and Sunday from 6 a.m. to noon. Crews are inspecting the bridge.

• Ohio: Single-lane alternating traffic will take place on Roosevelt Road between Mt. Nebo Road and O’Neil Lane on weekdays from 7 a.m. until 5 p.m. through late October. Workers are repairing the road. Flaggers will be on site to direct traffic.

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

• McKeesport: Lysle Boulevard will remain reduced to a single lane of traffic in each direction between Evans Avenue and Center Street from 8 a.m. to 4 p.m. daily through mid-October. Duquesne Light is installing a duct bank for utility wires.

• Robinson and Kennedy: Single-lane restrictions will occur in both directions of I-79 between the I-376 Airport/Pittsburgh (Exit 59 A/B) interchange and approximately one-half mile north of the Route 60 Moon Run/Crafton (Exit 60 A/B) interchange beginning Monday and from 7 p.m. to 5 a.m. on weeknights through late November. Crews are conducting joint sealing and line painting.

Washington County

• South Franklin: Old Scale Road and Van Neal Drive will close between Route 18 and Route 221 beginning Monday and through mid-December. Crews are conducting roadwork and demolition worth $1.5 million. Commuters can follow a posted detour via Jolly School Road.

Westmoreland County

• Rostraver: Single-lane restrictions will take place on I-70 between Exit 43 (Route 201 Fayette City) and Exit 46 (Route 51/I-70 Interchange) from 9 a.m. to 3 p.m. on Saturday and from 6 a.m. to 4 p.m. Monday through Friday. Crews are continuing to demolish the Crawford Lane Bridge substructure and are replacing it with temporary pavement.

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