SigAlert After Big Rig Overturns on I-680

A big rig trailer overturned on northbound Interstate 680 near Andrade Road in Sunol on Wednesday afternoon, closing two lanes and triggering a SigAlert. (patch.com) (msn.com) California Highway Patrol said the crash was reported at about 4:40 p.m. on northbound 680 near Andrade Road. (patch.com) (msn.com) CHP said the overturned trailer also struck a Toyota RAV4 and pushed it onto the freeway shoulder. (msn.com) The lane closures hit one of the main commuter routes between southern Alameda County and the Tri-Valley, with traffic backing up through Sunol as crews worked the scene. (patch.com) (quickmap.dot.ca.gov) Authorities told drivers to expect delays and use alternate routes while the crash scene was cleared. (patch.com) (chp.ca.gov) The crash follows a string of heavy-impact truck incidents on the Sunol stretch of I-680, including earlier wrecks that shut lanes for hours in both directions. (cbsnews.com) (nbcbayarea.com) For East Bay drivers, the immediate issue was simple: two blocked northbound lanes near Sunol can turn a late-afternoon backup into a regional commute problem fast. (patch.com) (quickmap.dot.ca.gov)