Point Pleasant Silver Bridge Part 2

Today is the 72nd anniversary of the failure of the Tacoma Narrows Bridge - a more famous bridge collapse here in the US than the one shown in the video here. I'll post that video in a bit, but this one caught my eye for MatSciWit because of the discussion of the failure detection methods used here to find out why the Point Pleasant Silver Bridge over the Ohio River collapsed in 1967. They video uses computer recreation and eye-witness testimony to explore the pitting corrosion, tension/compression in manufacturing, and material failure on the suspension bridge.

This is merely the middle of three parts to the video. Check out the other two after the jump...