The Interstate 5 bridge over the Skagit River at Mount Vernon north of Seattle collapsed late Thursday, throwing several cars and drivers into the water, and closing a key West Coast highway.
First responders rescued three motorists who were clinging to their cars on the partially submerged span. There has been no official word on what caused the collapse, though initial reports indicate an over-sized load may have struck the bridge, destroying overhead girders and dropping the structure into the river.
The collapse closed both the north- and south-bound lanes of what is the main artery between Seattle and Vancouver, BC . Traffic was being rerouted to other crossings.
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