A fuel tanker carrying jet fuel flipped onto its side on Kokee Road near the Kokee Road and Kekaha Road junction, spilling an unconfirmed amount of fuel, Kauai police said.
Police closed Kokee Road Tuesday night following the accident. Traffic was diverted to Waimea Canyon Drive.
The Kauai Hazmat team responded to the scene and placed absorbent materials to assist in the cleanup and help to suppress fumes.
Kokee Road is expected to remain closed through this morning.