MOUNT VERNON, Wash. (AP) -- A truck hauling a too-tall load of drilling equipment hit an overhead bridge girder on the major interstate between Seattle and Canada, sending a section of the span and two vehicles into the Skagit River. All three occupants suffered only minor injuries.
It happened about 7 p.m. Thursday on the north section of the four-lane Interstate 5 bridge near Mount Vernon, about 60 miles north of Seattle and 40 miles south of the Canada border, and disrupted travel in both directions.
The Washington State Patrol said the truck the driver works for Mullen Trucking in Alberta. The tractor-trailer, which was marked as an oversize load, was hauling a housing for drilling equipment Vancouver, Wash., when the top right front corner of the load struck several trusses on the north end of the bridge, the patrol said.
The driver, William Scott, of Spruce Grove, Alberta, near Edmonton, voluntarily gave a blood sample for an alcohol test and was not arrested.
Initially, it wasn't clear if the bridge just gave way on its own. But at an overnight news conference, Washington State Patrol Chief John Batiste blamed it on the too-tall load. The vertical clearance from the roadway to the beam is 14.6 feet.
The truck made it off the bridge and the driver remained at the scene and cooperated with investigators. Two other vehicles went into the water about 25 feet below as the structure crumbled. Three people were rescued and were recovering Friday.
The trucking company said it received a state-issued permit to carry its oversized load across the bridge.
Ed Scherbinski, vice president of Mullen Trucking, said in an interview with The Associated Press that the Washington state Department of Transportation had approved of the company's plan to drive a piece of drilling equipment along Interstate 5 to Vancouver, Wash.
He also said the company hired a local escort to help navigate the route.
Scherbinski said company officials are as bewildered as everyone else. He said he's not sure whether the Mullen Trucking vehicle was the cause of the collapse, but the driver could see the bridge falling in his rearview mirror.
Cynthia Scott, of Spruce Grove, Alberta, said she spoke with her husband moments after he saw the bridge fall into a river in his rear-view mirror. Cynthia Scott said there was a small ding in one of the front corners of the load.
Dave Chesson, a state DOT spokesman, said there were no signs leading up to the bridge warning about its clearance height.
Traffic could be affected for some time. The bridge is used by an average of 71,000 vehicles a day, so the roadblock will cause a major disruption in trade and tourism between Seattle and Vancouver, British Columbia.