Update: All lanes of Route 339 are open.
Motorists in Columbia County are advised that Route 339 is down to a single lane between Mainville and Mifflinville due to a vehicle crash and downed power lines.
Flaggers are directing traffic through the area.
Motorists can check conditions on more than 40,000 roadway miles by visiting www.511PA.com. 511PA, which is free and available 24 hours a day, provides traffic delay warnings, weather forecasts, traffic speed information and access to more than 770 traffic cameras.
511PA is also available through a smartphone application for iPhone and Android devices, by calling 5-1-1, or by following regional Twitter alerts accessible on the 511PA website.