Case study about Bridges have collapsed in the near future (5-10) years ago in the U.S.

Task: Prepare a case study about bridges that have collapsed in the united states in the near future. 4 pages maximum! 

instructions on where to search and what to include in the report are provided in the pdf below. 

Note: references must be credible!   

Please ask any question if not clear. 

GOOD LUCK!