OAKLAND -- The on- and offramps to Interstate 880 at West Grand Avenue in West Oakland were closed Monday afternoon after a big rig overturned and spilled more than 40 gallons of diesel fuel, according to the California Highway Patrol.
The wreck happened about 3:05 p.m. on the northbound I-880 onramp at West Grand, and left the tractor-trailer on its side, said Officer Sean Wilkenson.
No one was injured and both ramps were expected to be closed until at least 5 p.m.
At least 40 gallons of diesel fuel spilled from the truck, which was hauling a tanker trailer carrying 43,000 pounds of a fuel additive, Wilkenson said.
The tanker was not breached and nothing spilled from it, authorities said.
As a precaution and to keep the area clear of traffic during cleanup operations, the southbound offramp was also closed.
A mechanical failure may be to blame for the wreck, Wilkenson said. Commercial officers were on scene about 4 p.m. inspecting the big rig to determine the exact cause of the crash, he said.
"We're waiting for the company to bring another tanker out to empty it so we can remove it from the roadway," Wilkenson said.
The Oakland Fire Department was able to contain the spill but requested an environmental cleanup company to respond to assist.