From wcco.com:

This is a huge, tall bridge located in Minneapolis. I drive it twice a day. The entire bridge, loaded with vehicles and repair crews, who were resurfacing the bridge deck, completely collapsed into the river some 70 feet below. It is thought to be a structural collapse rather than any type of terrorism.

Bavanaugh said he was headed northbound on I-35W when he heard a huge rumbling and he saw a huge cloud of white dust as the bridge collapsed. He had his seatbelt on and said if he hadnt, his head would have gone through the windshield.

Bavanaugh said a school bus full of children was ahead of him. He got on the bus and helped children, who he estimated to be 8-12 years old, off the bus and off the bridge.

“It is just horrific,” said witness Marilyn Franzen, who saw the bridge collapse. Franzen said she saw a school bus that managed to stop before the going over the edge of the bridge that she said was carrying 20-30 children.

According to witnesses, cars are crushed and mangled under the bridge where it collapsed onto the shore of the river. Street signs also crushed cars.

People are being sent to Hennepin County Medical Center which is very close to the scene of the collapse.

The bridge was opened in 1967 and crosses the Mississippi River in Minneapolis.

A maintenance project began about nine months ago repairing potholes and other concrete on the bridge. According to a spokesperson from the Mn-DOT, there was no work on the actual structure under the bridge.

Link