An overturned big rig is cause traffic headaches in Vacaville.

According to a post on Facebook from the Vacaville Police Department, a big rig overturned on I-80 Eastbound Davis Street near the off ramp. As of 12:45 p.m., Vacaville PD, Fire, Public Works and CHP are on the scene working to prevent the contents — food grade sunflower oil leaking from the trailer — from flowing into nearby storm drains.

Both the on and off ramps are closed and will likely be closed for some time as CHP investigates and cleanup takes place.

Stay with ABC10 for more updates on the roadway as they become available.