U.S. Highway 50 in the Sierra has been closed because of a grass fire producing heavy smoke, making the area unsafe for motorists.
Eastbound traffic is being held at Sly Park Road in Pollock Pines. Westbound traffic is being held in the town of Meyers just west of South Lake Tahoe.
The fire started in a rural section of the highway between White Hall and Kyburz. It is spreading east. The CHP is reporting that the fire started when a vehicle blew a tire.
There are no detours in place yet and no estimated time when the highway will reopen. Follow Caltrans on Twitter @D3PIO for the latest updates.