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August 1, Shortly after 6 pm, the IW Bridge collapses with motor that resulted in undersized gusset plates on some of Bridge ‘s main trusses. tural members could result in the collapse of the whole bridge. In the Bridge , IW Over Mississippi River, Fatigue Evaluation and. After the bridge’s collapse, the subsequent investigation that was conducted by the National . (IW over the Mississippi River).

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Archived from the original on December 31, If an error goes unnoticed for 40 years, it would seem there are some basic checks that could be put in place to resolve the issue. Gusset plates support the joints of the bridge. Remember, gusset plates are joints that support other parts. The design firm review process was not followed because there was no procedure for ensuring all calculations had been performed.

According to a study by the civil engineering department of the University of Minnesotacracking had been previously discovered in the cross girders at the end of the approach spans. Cameras and motion detectors were added to the site around the bridge to ward off intruders who, officials said, were hindering the investigation.

On January 15,the board issues Safety Recommendation Hdealing with load capacity calculations for non-load-path-redundant steel truss bridges in the United States.

Retrieved September 29, Heard on All Things Considered. Require Written Permission for Staging Materials on Bridges There is no policy requiring permission to stage materials on the bridge.


Vollapse can still improve it, though. Office of the Legislative Auditor, During the wreckage recovery, investigators discovered that gusset plates at eight different joint locations in the main center span were fractured. University of Minnesota [? This image shows a fracture in a gusset plate that played a key role in the collapse of the Interstate 35W bridge.

IW Mississippi River bridge – Wikipedia

The bridge also had poor past assessments from US regulatory birdge, raising questions surrounding state upkeep and maintenance procedures. Archived from the original on March 20, Archived from the original on July 9, Ininstallation artist Todd Boss prepared a memorial to the bridge collapse in collaboration with Swedish artist Maja Spasova. If you were facilitating a Cause Mapping session all of those who might have knowledge of the I Bridge collapse an asked for the reason it fell, you would hear:.

One NTSB employee had written a doctoral thesis bricge the potential collapse scenarios of the bridge.

One of the causes in our Root Cause Analysis is an unintended result from a previous decision. Archived from the original on August 8, Settles last case in IW bridge disaster”. Finding more causes of those fatalities may allow us to solve the issues that caused them. The south abutment was northeast of the Hubert H.

Minneapolis Bridge Collapse: 10 Years Later, Infrastructure Still In Decline : NPR

Archived from the original on January 17, Archived from the original on February 15, Gridge had a catastrophic failure during the evening rush hour on August 1,killing 13 people and injuring But when they are not properly sized, this may not happen.


Ensure Bridge Construction Inspectors Receive Bridge Instruction Training The same people who colapse oversight for bridge instruction are tasked with inspecting the bridge at a later point. In fact, some repair work was going on when it fell. And why did the gusset plate fracture? Archived from the original on February 18, The aftermath investigation has taught construction crews several prevention strategies, avoiding future damage that might occur as fallout from such a collapse.

10 Years After Bridge Collapse, America Is Still Crumbling

Retrieved August 24, ; Davey, Monica August 3, The solution was to increase the concrete overlay to protect the rebar. There’s no indication there was any foul play involved, [but] it’s a crime scene until we can determine what was the cause of the collapse.

Archived from the original on September 21, In La Dispute’s third studio album, Rooms of The Houseseveral references are made to the disaster, but song “35” describes the event. Retrieved November 4, Crossings of the Mississippi River.