Gallery: Washington state bridge collapse

A section of the Interstate 5 bridge over a river collapsed north of Seattle Thursday evening, dumping two vehicles into the water and sparking a rescue effort by boats and divers as three injured people were pulled from the chilly waterway.

Authorities said it appeared nobody was killed in the bridge failure that raised the question about the safety of aging spans and cut off the main route between Seattle and Canada.

View photos of the bridge collapse above.