Construction in both directions is causing long delays on Interstate 279.
Northbound traffic from the city is particularly heavy. Motorists near the Wexford exit report delays of more than two hours.
Southbound traffic is also slow due to construction.
Jim Struzzi, spokesman for the Pennsylvania Department of Transportation, said he knew of no special circumstances causing the extra long delays. "What's happened is that there is work being done on both I-79 and I-279 so people are stuck in one long work zone."
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