Big Rig Overturn Closes I-680 Northbound Lanes

A big rig overturned on northbound Interstate 680 near Sunol, blocking the right lanes and snarling East Bay traffic as crews worked the scene. (patch.com) The California Highway Patrol issued a SigAlert after the truck went over in the Sunol stretch of I-680, a corridor that links the Tri-Valley with Fremont and the South Bay. CHP said lane closures and cleanup work were expected to cause major delays. (patch.com) Bay Area 511 lists traffic incidents and lane restrictions across the region and directs drivers to current alerts before a trip. On I-680, crashes near Sunol can quickly spread backups onto connecting routes including state Route 84. (511.org) Sunol is a choke point for Bay Area freight and commute traffic because I-680 narrows through a hilly pass between Pleasanton and Fremont. When a truck overturns there, even partial lane closures can reduce the freeway to a crawl. (511.org) This is not the first truck rollover to shut down I-680 in Sunol. In April 2025, a dump truck overturned near Andrade Road, spilled dirt onto both sides of the freeway, and forced closures that lasted for hours. (patch.com) Other crashes have hit the same corridor in recent years, including a June 2023 garbage-truck rollover on northbound I-680 near Sunol that closed several lanes and backed up traffic. KTVU reported that wreck during the morning commute. (ktvu.com) California Highway Patrol’s public incident system and 511 remain the main public sources for lane status as crashes unfold, though both can change minute by minute as tow trucks arrive and debris is cleared. For drivers on I-680, that usually means checking conditions before leaving and expecting delays to outlast the initial crash report. (cad.chp.ca.gov, 511.org)