A bridge along Interstate-5 in Washington State collapsed on Thursday evening, leaving at least two cars and some people submerged in water, according to Washington State Patrol.
It was unclear how many people were in the Skagit River, the waterway in northern Washington that the four-lane bridge crossed.
The incident happened around 7 p.m. local time, and traffic has been closed in both directions.
NBC Seattle affiliate KING5 reported that traffic was significantly backed up in both directions. I-5 is the main freeway that runs along the West Coast.