A big rig overturned late Wednesday morning on rural Highway 128 in Napa County, spilling about 100 bales of hay and partially blocking the route, according to the CHP.

The crash occurred on the winding highway near Wragg Canyon Road, just south of Lake Berryessa.

No one was injured but the spill and flipped rig blocked one lane of the two-lane highway.

The crash also caused a small fuel spill, according to emergency dispatchers.