PITTSBURGH (KDKA) — It could be another weekend traffic nightmare on the Parkway West.

According to PennDOT, there will be an outbound closure this weekend between the Fort Pitt Bridge and the Interstate 79 interchange. The outbound side of the Fort Pitt Tunnel will be closed this time, as well.

The closure begins tonight at 9 p.m. and continues through 2 p.m. Sunday, that’s weather-permitting.

Crews will be continuing paving and reconstruction projects on the Parkway West; and in the Fort Pitt Tunnel, crews will be doing repair work.

In addition, single-lane restrictions will occur nightly on the inbound side of the Parkway West through the weekend.

PennDOT has posted this westbound detour (between the Fort Pitt Bridge and I-79):

Outbound (westbound)

• From the Fort Pitt Bridge, take Exit 69C to East Carson Street (Route 837)

• Continue straight towards the Route 60/Crafton Exit

• Follow signs towards northbound Route 19/60 to East I-376 Crafton/Downtown

• Take left ramp towards Downtown/Crafton

• Continue right towards the Route 60/Crafton Exit

• Turn left onto Wabash Street

• Wabash Street becomes Greentree Road

• From Greentree Road, turn right onto Mansfield Avenue (Route 3062)

• Turn left onto Noblestown Road (Route 50)

• Noblestown Road becomes East Main Street

• Turn right onto Jane Street

• Jane Street becomes Mansfield Boulevard

• Mansfield Boulevard becomes West Main Street

• Follow West Main Street to I-79

• Take the ramp to northbound I-79

• Follow northbound I-79 to I-376

• End detour

PennDOT says drivers traveling in that area should expect significant delays and find another way around it if they can.

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