A mysterious Canadian engineering YouTuber appears to have found the “smoking gun” of the Florida International University bridge collapse, which killed six people last week. On March 15, an under-construction pedestrian bridge at Miami’s Florida International University collapsed onto a busy six-lane roadway below. The main span of the bridge was prefabricated and then swung into position in a single day. However, AvE’s theory is that while crews were trying to even-out the stresses in the bridge, they overtightened a tension rod so much that it snapped, bringing down the bridge. The “smoking gun” for AvE’s theory is that in footage from the collapse it’s possible to see a tension rod sticking out of the wreckage still attached to the hydraulic cylinder that would have been used to tighten it.

Source: National Post March 23, 2018 17:26 UTC