A top transportation official is warning authorities to assess what risk bridges face catastrophic collapse due to collision.

The two most vulnerable spans listed in the assessment – the Huey P. Long Bridge outside New Orleans and the San Francisco-Oakland Bay Bridge – face a likelihood of collisions of approximately every ...

As long ago as 1910 ... the longest suspended span in the world: 4,260 feet, or four-fifths of a mile. Even after the great era of steamships had passed, the bridge held sway, dictating the ...

The two most vulnerable spans listed in the assessment – the Huey P. Long Bridge outside New Orleans and the San Francisco-Oakland Bay Bridge – face a likelihood of collisions of approximately ...