conditions Wednesday afternoon remain treacherous on roads across the Lehigh Valley, including Interstate 78, as snow continues to fall. A tractor-trailer jackknifed in the westbound lanes at Exit 45 in New Smithville, Weisenberg Township, around 4:10 p.m. State police ordered the westbound lanes closed and traffic diverted between state routes 863 and 737. Several miles away, a crash briefly closed both eastbound lanes between the Route 22 split and Route 309. One lane has since opened. PennDOT traffic cameras showed traffic on the highway backing up as a result of the incidents. No further details were immediately available.
— TTWN Allentown (@TotalTrafficABE) March 21, 2018