Crashes snarled traffic on several major area roadways Tuesday morning after icy conditions were reported across the region. State police said they worked with PennDOT to clear crashes on I-79 and I-376. A crash along the outbound Parkway West near the Carnegie exit involved 13 vehicles. Washington County 911 dispatchers told WJPA News that there we no accidents reported during that time along Interstate 79 here in Washington County.