Road cleaning crews have been called to deal with the spillage on State Highway 5.
State Highway 5 near Te Pohue now has one lane open after dangerous conditions following a diesel spill.
Road cleaning crews were called to deal with the spillage on the Napier-Taupō Rd, near the Harapaki wind farm, about 11.05am.
Initially, the closure was for northbound lanes only, but
was then updated to both lanes until the single lane re-opened late afternoon.