By the way, great work.
Here is the info and link but no pic.
Federal officials investigating the disaster said Friday an aerial photo made before the bridge collapsed shows where construction equipment was placed on the structure and could help investigators determine why the bridge fell.
In Depth: Deadly bridge collapse
“This gives us an outstanding depiction of what, in fact, was on the bridge as it relates to the loads that were provided by the construction company: the equipment, the positioning of the equipment, where the loads were. All of that data will be put into our ... computer model,” Mark Rosenker, chairman of the National Transportation Safety Board, said Friday.