Hazmat teams were called in after a tractor-trailer jackknifed in Bemus Point Tuesday morning.
According to police, a North American Van Lines truck ran off the ramp leading from I-86 eastbound to Route 430 westbound around 5 a.m. It stayed upright but was leaking diesel fuel.
Hazmat crews were called in to clean up the spill.
The ramp was shut down for a time, and traffic had to be rerouted.
Police believe the driver, who was not hurt, hit some ice. The driver's name was not released.