Letters, packages spill on I-80 after USPS contractor overturns

SAN PABLO, Calif. (Chip Vaughn/KTVU) - The California Highway Patrol issued a Sig-Alert on Friday morning involving a big-rig carrying mail for the US Postal Service on westbound Interstate Highway 80 in San Pablo.

The crash,  at the San Pablo Dam Road onramp, was first reported at 5:02 a.m.

A large amount of debris, mostly mail and packages, were on the roadway, creating a major traffic delay.

The driver was not injured.