What caused the i35 bridge collapse?
The bridge opened in 1967 and was Minnesota’s third busiest, carrying 140,000 vehicles daily. 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.
When did the I 35 bridge in Minnesota collapse?
Aug. 1, 2007
I-35W St. Anthony Falls Bridge 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.
Why did the Minneapolis bridge collapse in 2007?
The interstate highway bridge had been classified as structurally deficient, meaning that it was aging and in need of repair. And the National Transportation Safety Board determined that it was a design flaw, and not deferred maintenance, neglect, or other problems, that caused the 35W bridge to collapse.
How many bridges have collapsed in the US?
Probability and statistics were used to estimate the average number of bridge collapses throughout the United States and a value of 128 annually was determined with a range between 87 and 222.
Who designed the I 35 bridge?
Sverdrup & Parcel
I-35W Mississippi River bridge/Architecture firms
The I-35W Mississippi River bridge was designed by Sverdrup & Parcel in 1961. Construction of the bridge began in 1964 by Hurcon Inc. and Industrial Construction Company for approximately $5.3 million.
How many people died in the Minneapolis Bridge?
Minnesota Bridge Collapse Survivors Take Pieces Of It Home On Aug. 1, 2007, the interstate 35W bridge in Minneapolis collapsed, killing 13 people and injuring 145 others. Now, survivors of the accident are able to claim pieces of the bridge.
Why did the Minneapolis bridge collapse?
The post-failure investigation by National Transportation Safety Board finds that the main reason behind the collapse of the I-35W Bridge in Minneapolis, Minnesota was the gusset plate that was cracked due to the inadequate load capacity.
How did the Minnesota bridge collapse?
The collapsed 35W bridge in Minneapolis seen on August 2, 2007. Ten years ago, the Interstate 35W bridge over the Mississippi River in downtown Minneapolis collapsed, sending cars, trucks and even a school bus that were crawling over it in bumper-to-bumper rush hour traffic plummeting into the river below and onto the rocky shore.
What bridge collapsed in Minneapolis?
Bridge 9340 in May 2006 (prior to collapse) 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.
