When was the last major bridge collapse?

When was the last major bridge collapse?

August 1, 2007
During the evening rush-hour on August 1, 2007, the center span of an eight-lane, steel truss arch bridge—one that carried Interstate 35W over the Mississippi River in Minneapolis, Minnesota—suddenly collapsed.

What are the odds of a bridge collapsing?

If you’re severely injured, stay put and yell for help. And wait for the rescue team to come to you. Don’t panic, and remember that your odds of dying in a bridge collapse are one in several million.

Do bridges collapse?

During construction A large number of bridge accidents occur during the construction of the bridge itself. These accidents are often due to an error made by the engineers, such as a miscalculation. The bridge collapses under its own weight, and this can be deadly for the workers on it at the time.

Why did I 35W 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.

How old are the bridges in the United States?

Less encouraging is that 42% of the nation’s 617,084 highway bridges are over 50 years old, an increase from 39% in 2016. Notably, 12% of highway bridges are aged 80 years or older. Structurally deficient bridges specifically are nearly 69 years old on average.

How many bridges are structurally deficient in the United States?

According to a report released last year by the American Society of Civil Engineers, one out of every 11 bridges in the United States is rated structurally deficient.

Are there any bridge collapses in the United States?

(CNN) There have been a number of deadly bridge collapses through the years, some due to structural deficiencies and others in collisions or accidents. Here’s a look back at the 10 deadliest incidents in the last half century.

Are there any new bridges in the United States?

Despite dozens of new transportation and infrastructure projects underway in the United States and President Trump’s call for new roads and public works, tens of thousands of bridges across the country are currently falling apart.