- Dec 4, 2010
- Cheatham/Montgomery County
That appears to have broken all at once. It didn't bend then break. It must have made a loud noise. It seems odd that it broke there and not closer to the bolted flange. The steel is much weaker where all the holes are drilled in the beam at the bolted connection. I didn't take bridge design in college, but I do remember from strength of materials class that the stress and fatigue in metal is greater near a hole or bolted connection. My guess is there was imperfections in the steel when it was made. Either way I can see why they closed it. It's going to have a major impact in the area and in the southeast for sure.