Fuel tanker overturns, closing Anchorage’s West Dimond Boulevard and nearby Costco

A tanker truck hauling thousands of gallons of unleaded gasoline overturned Sunday on West Dimond Boulevard in South Anchorage, spilling a small amount of fuel and closing a major traffic corridor and the nearby Costco. Both eastbound and westbound lanes of Dimond between King Street and C Street were closed most of the day, and the Costco was closed all day.

One person suffered minor injuries and was taken to the hospital, said Anchorage Fire Department Assistant Chief Alex Boyd. No further details were available .

The incident happened shortly after 9 a.m. at an entrance to the Costco at 330 W. Dimond Blvd. The truck and a trailer were hauling around 10,000 gallons of unleaded gasoline, Boyd said — 4,000 gallons in the truck’s main tank, which rolled over, and another 6,000 in its trailer, which didn’t roll over, he said. Anchorage-based Inlet Energy operated the truck, he said.

The truck appeared to be making a turn when it rolled over, said fire Capt. Adam Peterson. Less than 50 gallons of fuel spilled, primarily from the cab, along with some additional oil from the motor, he said.

Crews worked through the afternoon to unload fuel from the overturned tank, Boyd said.

By late evening, all lanes on Dimond had been reopened.