Mississippi bridge collapses

A section of the bridge rests on freight cars after collapsing Photograph: Jim Mone/AP

Vehicles burn in the wreckage of the bridge Photograph: Jacob Reynolds/AP

Vehicles are scattered along the broken remains of the bridge Photograph: Stacy Bengs/The Minnesota Daily/AP

A rescue worker prepares to search a submerged vehicle Photograph: Jeff Wheeler/The Star Tribune/AP

Vehicles are scattered along the broken remains of the Interstate 35W bridge Photograph: Heather Munro/The Star Tribune/AP

A victim waits for emergency help after being caught in the collapse of the bridge Photograph: Stacy Bengs/The Minnesota Daily/AP

Cars lie in the Mississippi river Photograph: Jium Gehrz/The Star Tribune/AP

Melissa Hughes holds an unidentified infant. Hughes was driving the red car in the background Photograph: Jerry Holt/The Star Tribune/AP

An unidentified bystander checks on a driver in a mini-van Photograph: Heather Munro/The Star Tribune/AP

A collapsed portion of the bridge Photograph: David Denney/The Star Tribune/AP

Emergency services at the scene of the collapse Photograph: Adam Wolf/AP

An aerial picture of the bridge after it collapsed Photograph: David Denny/The Star Tribune/AP