A traffic collision involving a large rig and many cars blocked all lanes southbound I-680 in Martinez Wednesday morning, causing major delays through the morning commute.
CHP issued a severe traffic alert warning drivers of a jackknifed tractor trailer on southbound I-680 north of Arthur Road in Martinez. Motorists are increasingly being diverted at Pacheco. It’s advised to utilize alternate routes, such as for example westbound I-780, also to expect delays. KCBS Radio reported that traffic is supported completely to Benicia.