.>>> a major cleanup underway on an alameda county freeway, a jackknifed big rig created a hazardous response, and we are live near the scene along 680 in fremont.>> reporter: i'm ashley on six cities southbound side, the traffic is fine, the accident happened 680 northbound, still trickling through, we're talking about an accident that happened about 10 hours ago, forcing chp to close all of the northbound 680 lanes and brought traffic to a halt. this is what it looked like at the mission boulevard exit, just as the morning commute was starting to pick up. they major accident happened, a big rig reportedly caring thousands of gallons of fuel jackknifed and collided with vehicles. only minor injuries. intense fallout dragged on for over hours, forcing people to go almost an hour to work around the accident. chp opened up number 2 lanes of traffic, easing up the congestion ever so slightly.>> they are dealing with a major fuel cleanup right now, the reason why some lanes are closed off, nor to lanes open, 2 lane still closed, they said the freeway would open up soon, but they couldn't