(KRON) -- An overturned big rig was blocking traffic for the Southfront onramp to eastbound Interstate 580 in Livermore Tuesday morning. The California Highway Patrol is recommending Vasco Road as an alternative onramp. Sword-wielding man offers ‘squatter removal’ service in Bay Area Delays are expected, the CHP said. As of 8:30 a.m., there is no estimated time for reopening the onramp. ...read more read less