SAN JOSE (CBS SF) — A sewage crashed and overturned on US Highway 101 in Palo Alto Wednesday, blocking a number of lanes of traffic in both directions for hours.

The crash happened shortly after 12:30 p.m. Wednesday along southbound 101 just south of the San Antonio Road exit.

The overturned truck was spilling sewage as it lay on top of the center divide and the wreck was blocking the number 1, 2 and 3 lanes in both the southbound and northbound directions.

Fire department personnel were at the scene trying to stop the sewage spill. There was no immediate word on any injury to the driver of the truck, nor what may have caused the crash.

As of shortly before 3:30 p.m. Redwood City CHP said that all northbound lanes had reopened.

The three left lanes southbound remained blocked until about 5:12 p.m. when the truck was removed and all lanes were cleaned up.