Actually I made a mistake. It’s the 10th avenue bridge.
The 3rd avenue bridge is on the other side of the stone arch bridge. :)
Interesting article here about the inspections and decisions made:
http://www.startribune.com/10204/story/1339411.html
“According to a source with knowledge of the state and federal investigations, MnDOT is focused on the east side of the northbound section of the bridge past the Washington Avenue entrance as the likely spot where the bridge first gave way.”