A distracted pilot car driver, lack of low-clearance signage on the bridge and poor route planning by the carrier all played a role in the bridge strike and collapse, NTSB says.
Time-lapse video shows the elaborate work that went into putting the Skagit River I-5 Bridge's permanent span into place September 14-15, following collapse earlier in the year.
An NTSB report written from preliminary accounts of the collision that caused the bridge collapse on Interstate 5 near Mount Vernon, Wash., says that the top of an oversize load collided with an overhead portal ...
A large part of an Interstate 5 bridge over the Skagit River near Mount Vernon, Wash., collapsed Thursday evening after an oversize truck hit an overhead span of the bridge.
Heavier than normal traffic is forecast for I-5 through Seattle and I-405 east of Seattle during the shutdown.
The onramp to northbound I-5 at the Northwest Avenue interchange will close for two weeks starting June 21.
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