What was the cause of the Minneapolis bridge collapse?

What was the cause of the Minneapolis 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.

Which bridge collapsed in Minneapolis?

Interstate 35W bridge
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.

How many people died in Mpls bridge collapse?

Thirteen people died
Ten years ago today, the unthinkable happened in Minneapolis when an interstate bridge collapsed just at the end of rush hour. Thirteen people died, and many more were injured. Minnesota Public Radio’s Solvejg Wastvedt talked with survivors and witnesses who still hold on to vivid memories of that disaster.

When did Mpls bridge collapse?

Aug. 1, 2007
The Interstate 35W bridge disaster in Minneapolis killed 13 and injured 145, when the bridge broke apart during rush hour on Aug. 1, 2007. Cellphone networks crashed under the load of people checking on loved ones, or asking if they had heard the news.

Do bridges collapse frequently?

While it’s becoming less common than in the past, some bridges fail almost immediately after completion due to significant design errors or issues associated with materials used in the construction process.

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.

When did the bridge collapse in Minnesota?

I-35W Mississippi River Bridge (2007) Minneapolis, Minnesota, USA. The eight lane, 581 metre bridge collapsed into the Mississippi River killing 13 people and injuring 145. Commonly called the ‘i-35 Minneapolis’ and opened in 1967, the bridge carried over 141,000 vehicles a day, on four northbound and four southbound lanes.

When did the 35W bridge collapse?

Collapse of the previous bridge. During the evening rush hour at 6:05 pm on August 1, 2007, the main spans of the I-35W Mississippi River bridge in Minneapolis collapsed and fell into the river and onto its banks, killing 13 people and injuring 145.