Northbound I-75 in Walton has now reopened after two tractor-trailers collided.
The crash happened around 3:20 a.m. Monday in the center lanes.
Diesel fuel then spilled all over the road.
Crews said "they had quite a mess to clean up."
Traffic was being forced to get off the expressway at the Walton exit.
The wreck was cleaned up around 7:20 a.m. Monday.