“A colliding truck may have triggered the collapse on Thursday of part of a four-lane freeway bridge that sent vehicles and drivers tumbling into a frigid river in Washington state, officials said.
A U.S. National Transportation Safety Board (NTSB) investigation into what led part of the Interstate 5 bridge to fall into the Skagit River 55 miles (90km) north of Seattle was expected to continue on Friday.
Two of the three people rescued from the river were hospitalized with hypothermia, but no one died, officials said.
The freeway is a principal corridor for vehicles between Seattle and Vancouver, Canada, and Washington state Governor Jay Inslee said he expected major traffic delays in the region.
State Patrol Chief John R. Batiste said a semi-truck driven southbound struck the bridge just before part of it collapsed. The bridge has metal overhead beams.
“The size of the load he was carrying appeared to create a problem, causing him to strike the bridge,” Batiste said. He said investigators were talking to the driver and inspecting the truck….”Twitter