Walnut Creek, Calif. (KCBS) -- All traffic lanes have been re-opened on southbound Interstate Highway 680 north of Treat Boulevard in Walnut Creek after they were closed following a collision that sent 100 gallons of tar on to the roadway.
California Highway Patrol Officer Scott Yox said several ramps and lanes had to be closed for several hours.
The material spilled is used on the top of asphalt and isn't hazardous, Yox said. But enough of the stuff spilled to have a major impact on traffic.
In KCBS Sky 5 Cathy Coates observed that instead of trying to clean up the spill, the crews decided to spread it onto the roadway and let it dry in place. "They are just doing a freeway patching job here," she said.
The spill happened just before 10 a.m. after a vehicle struck the truck carrying the seal slurry.
A Sig-alert was issued at 10 a.m. All the lanes of the roadway were re-opened shortly after 1 p.m.
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