Major Road Closures This Week On Pittsburgh Parkway

PITTSBURGH, PA — It's going to be tricky to travel on the Parkway during the evenings this week.

The Allegheny County Department of Public Works has announced the upcoming closures of portions of parkway and the I-279/I-579 High Occupancy Vehicle (HOV) lanes in Pittsburgh, Ross Township and Ohio Township.

The closures are necessary for the demolition of Jacks Run Bridge No. 3. This bridge carries Jacks Run Road over I-279 between Bellevue Road/Bellpark Drive and Kane Lane in Ross.

From Monday to Friday from 9 p.m.-5 p.m. nightly, the parkway northbound (outbound) will be fully closed between the McKnight Road/Evergreen Road exit ramp (Exit 4) and the I-279 North on-ramp from Camp Horne Road.

During this period, the I-279/I-579 HOV northbound (outbound) lanes will be fully closed from 8 p.m. to 6 a.m. nightly and a single lane of the parkway southbound (inbound) under Jacks Run Road will be closed nightly from 7 p.m.-6 a.m.

The right-lane shoulder of the parkway northbound (outbound) under Jacks Run Road will also be closed during daytime hours, from 5 a.m.-to 7 p.m. Monday through Friday.

From Friday night to Saturday morning, the parkway northbound (outbound) will be fully closed from 8 p.m.-10 a.m. between the McKnight Road/Evergreen Road exit ramp (Exit 4) and the I-279 North on-ramp from Camp Horne Road.

Concurrently, the parkway southbound (inbound) will be fully closed from 8 p.m.-10 a.m. between the Camp Horne Road exit ramp (Exit 8) and the parkway south entrance ramp from McKnight Road. A single lane of I-279/I-579 HOV northbound (outbound) will be closed, with traffic at the McKnight Road exit diverted off the HOV from 7 p.m. to midnight. After midnight, the HOV will be fully closed until 6 a.m. on Aug. 3.

Between 7 p.m. on Aug. 1 to 10 a.m. on Aug. 2, the parkway northbound (outbound) will be fully closed between the McKnight Road/Evergreen Road exit ramp (Exit 4) and the parkway on-ramp from Camp Horne Road . The parkway southbound (inbound) will also be fully closed from 7 p.m-10 a.m. between the Camp Horne Road exit ramp (Exit 8) and the parkway south entrance ramp from McKnight Road.

From 6 p.m.on Aug. 2 to 5 a.m. on Aug. 3, the parkway northbound (outbound) will be fully closed between the McKnight Road/Evergreen Road exit ramp (Exit 4) and the parkway northbound on-ramp from Camp Horne Road.

The parkway southbound will be fully closed during that time between the Camp Horne Road exit ramp (Exit 8) and the parkway south entrance ramp from McKnight Road.

All scheduled demolition work is weather-dependent and cannot proceed during heavy rainfall or lightning. PennDOT maintains I-279 and the I-279/I-579 HOV lanes.

During full closures of the parkway northbound (outbound), traffic will be detoured back to I-279 using McKnight Road, Babcock Boulevard, Rochester Road, Lowries Run Road and Camp Horne Road.

Union Avenue traffic heading to the parkway northbound will use Gass Road, Highland Avenue, Perry Highway, Rochester Road, Lowries Run Road and Camp Horne Road.

When the parkway southbound (inbound) is fully closed, traffic will be detoured back to I-279 using Camp Horne Road, Lowries Run Road, Rochester Road, Babcock Boulevard and McKnight Road.

For parkway southbound traffic to Union Avenue in Ross, the detour includes Camp Horne Road, Lowries Run Road, Rochester Road, Perry Highway, Highland Avenue and Gass Road.

Periodic closures of I-279 and the I-279/I-579 HOV lanes are expected to continue through August. A detailed schedule of closures for each upcoming week will be released every Friday until the work is complete. Construction of a new bridge is expected to begin in 2027 as a separate project.

Jacks Run Bridge No. 3 was closed in July 2025 after inspectors identified corrosion in the bridge’s only pier. The Federal Highway Administration is funding the entire $2.8 million project, which began in April.

PennDOT is overseeing the federal funds for the project, with Swank Construction Company of New Kensington serving as the primary contractor. The section of I-279 near Jacks Run Bridge No. 3 is used by an average of 73,367 vehicles daily.