The National Transportation Safety Board issued an update yesterday on the ongoing investigation of the collapse of the I35W bridge collapse in Minneapolis. Interesting information, I’ve never really read an NTSB bulletin or update before.
Anyway, the update indicates that they have found a potential issue with the gusset plates that tie the beams together. They are further investigating the materials used in the plates, along with testing the loads and stresses placed upon them. Interesting, but it’s too early to know if this is the cause, or a contributing factor, or simply not related to the tragedy.
The NTSB also talks about how their using the stunning video we’ve all seen to help investigators onsite look for problems. Also they’re working with the construction company, trying to understand what equipment was placed on the bridge at the time, it’s weight and so on.
Overall, an interesting update - I’ll be following these NTSB updates mostly out of curiosity on how the board communicates and what their findings are.
Photo credit: photog37
I35W Bridge, Minneapolis Bridge Collapse, NTSB