A tanker truck carrying 2,600 gallons of diesel fuel overturned about 3 p.m. Thursday afternoon on eastbound U.S. 40 near Contractor's Road in Rosedale, spilling "all or most" of its load, according to Baltimore County fire officials.

Motorists were advised to avoid U.S. 40 until further notice. Eastbound U.S. 40 was closed between Contractor's Road and Berk Avenue, and the accident also brought traffic to a standstill in the westbound lanes.

About 500 gallons of diesel fuel entered a tributary of Northeast Creek, emergency officials said. Fire Department hazardous materials crews and workers from the Maryland Department of the Environment were applying absorbents ahead of the spill to remove the fuel before it reached the creek.

No injuries were reported.