The icy conditions on the Yellowstone River bridge led to a 30-car pileup just before noon on Saturday, the Montana Highway Patrol said.
No deaths were reported, but two people were seriously injured.
At least one person fell off the Yellowstone River bridge, according to the Billings Gazette.
(Montana Highway Patrol)
Part of Interstate 90 was closed as it took more than two hours for authorities to tow all the damaged cars away from the site.
NTSB INVESTIGATES 133 STACKING VEHICLES THAT LEFT SIX PEOPLE DEAD IN TEXAS
One traveler said that when braking to prevent cars from stopping in front of him, a semi-truck crashed into his vehicle, she told the Billings Gazette.
“It was like bumper cars,” she said.
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It was around 30 degrees in Billings when the accident occurred.
One of the deadliest shipwrecks of various vehicles in recent memory occurred earlier this month, when six people died and dozens were injured in a 133-car accident in Fort Worth, Texas.