This one by two freight trains colliding. One T boned the other. It was at a crossing which is directly under the overpass. One had stopped because it derailed and was still on the diamond.
I found a photo of the spot on Google Maps.
http://www.latimes.com/news/nation/nationnow/la-na-nn-missouri-train-crash-overpass-collapse-20130525,0,5885040.story
http://www.cnn.com/2013/05/25/us/missouri-train-collision/index.html
Rich