A big rig fire spread to vegetation at Lake Shasta Wednesday afternoon. It started a little before 5 O’clock on the northbound side of the freeway near the O’Brien Rest Area. Traffic quickly backed up nearly to the Pit River Bridge. Flames spread into the brush on the east side, but the vegetation fire was contained about a half hour later. The fire completely consumed the truck. The trailer was hauling a single item, a 43,000 pound cement block.