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Why did i35 bridge collapse?

Why did i35 bridge collapse?

The National Transportation Safety Board ultimately determined that the probable cause of the collapse of the I-35W bridge “was the inadequate load capacity, due to a design error . . . of the gusset plates at the U10 nodes, which failed under a combination of (1) substantial increases in the weight of the bridge.

When did i35 bridge collapse?

Aug. 1, 2007
On Aug. 1, 2007, Minnesota suffered a tragedy of historic proportions when the I-35W bridge (bridge 9340) over the Mississippi River in Minneapolis collapsed.

How old was the 35W bridge collapse?

The bridge opened in 1967 and was Minnesota’s third busiest, carrying 140,000 vehicles daily. It had a catastrophic failure during the evening rush hour on August 1, 2007, killing 13 people and injuring 145….

I-35W Mississippi River bridge
Collapsed August 1, 2007
Daily traffic 140,000

Where was the I-35W bridge collapse and response?

For additional copies of this report write to the U.S. Fire Administration, 16825 South Seton Avenue, Emmitsburg, Maryland 21727 or via I-35W Bridge Collapse and Response Minneapolis, Minnesota August 1, 2007

When to expect a USFA bridge collapse report?

The intent is not to arrive during the event or even immediately after, but rather after the dust settles, so that a complete and objective review of all the important aspects of the incident can be made. Local authorities review USFA’s report while it is in draft form.

What is the history of the 35W bridge in Minnesota?

In Minnesota, citizens and government officials alike sought access to MnDOT bridge inspection reports, Federal Highway Administration documents, and other records related to the history, maintenance, and safety of the 35W bridge – and all other bridges in the state.

When did the Point Pleasant bridge collapse happen?

The National Transportation Safety Board (NTSB) immediately began an investigation, as with most bridge collapses. The investigation team arrived the day after the collapse. At first glance, this collapse seemed to share some parallels with the Point Pleasant Bridge collapse of 1967 and the Mianus River Bridge failure of 1983.