when did the i-35 bridge collapse in minneapolis
I-35W Mississippi River bridge The I-35W Mississippi River bridge (officially known as Bridge 9340) was an eight-lane, steel truss arch bridge that carried Interstate 35W across the Saint Anthony Falls of the Mississippi River in Minneapolis, Minnesota, United States. It had a catastrophic failure during the evening rush hour on August 1, 2007, killing 13 people and injuring 145. The bridge opened in 1967 and was Minnesota's third busiest,[4][5] carrying 140,000 vehicles daily.[3] The NTSB cited a design flaw as the likely cause of the collapse, noting that a too-thin gusset plate ripped along a line of rivets, and additional weight on the bridge at the time contributed to the catastrophic failure.[6]