National Transportation Safety Board investigators said on Nov. 13 that the 2007 Minneapolis bridge collapse that killed 13 people and injured 145 others started when gusset plates on the upper side ...

The National Transportation Safety Board on Friday, Nov. 14, announced that it has determined that the probable cause of the collapse of the Interstate 35W bridge in ...

Steel plates connecting beams in the Interstate 35W bridge in Minneapolis were too thin by half and fractured, “the critical factor” in the collapse that killed 13 people and injured 145, the National ...

In its ongoing investigation of the I-35W bridge in Minneapolis that collapsed Aug. 1 over the Mississippi River, killing at least five people, the National Transportation Safety Board's 19-member ...

The gusset plates were about 72 in. high and 100 in. wide. NTSB said gusset plates failed at the U (for “upper”) 10 node of the truss. Jim Wildey, chief of NTSB’s materials laboratory, said ...

After more than 15 months of investigation, the National Transportation Safety Board began presenting their findings on the collapse of the Interstate 35W bridge at a two-day hearing that started ...

Undersized gusset plates in the Interstate 35-W bridge in Minneapolis were "the critical factor" in the bridge collapse last year that killed 13 people and injured 100, the National Transportation ...

The weakness of gusset plates, the weight of construction materials and the design of the 35W bridge emerged as prime causes of the structure’s Aug. 1, 2007, collapse during the second day of hearings ...

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