HARRISBURG, Pa. — A section of Interstate 81 near Harrisburg was expected to remain closed in both directions for the next several days after a tanker truck fully loaded with diesel fuel overturned Thursday morning and exploded into flames, sending black smoke billowing into the sky.
State police said the driver, 52, from Dover, Pa., was treated at a hospital for minor injuries.
Officials said the crash occurred on an onramp to Route 22-322, where the ramp curls back over the interstate and runs under another section of Route 22-322. They said the intense heat buckled steel beams on the top section and damaged it so badly there were fears it could fall onto I-81.
“There really could not have been a worse spot for this to have occurred,” state Transportation Secretary Barry Schoch told reporters.
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The truck, carrying 7,500 gallons of diesel fuel, was headed northbound from Carlisle shortly after 6 a.m. when it flipped over on the ramp, just north of where I-81 crosses the Susquehanna River.
Officials announced plans to tear down the heat-damaged top level, and were working to contain and clean up about 2,000 gallons that spilled into nearby Paxton Creek and the lake at Wildwood Park and Olewine Nature Center, a county park that borders the interstate.
Schoch said the heat from the fire was so intense that it forced water out of concrete as steam, generating explosions. A specialist was helping state officials assess damage to the bridges’ steel structures.
State police did not disclose the truck driver’s name and said they were still investigating the cause of the crash. Damage was estimated at more than $10 million.
The morning commute turned into a traffic nightmare, as drivers scrambled to find alternate routes around a place where the interstate, river and local geography funnels drivers. I-81 handles about 100,000 vehicles per day in that area, while Route 22-322 gets about 34,000.
At one point, vehicles were backed up for 10 miles on I-81 in both directions, said state Police Commissioner Frank Noonan.