Sunshine Skyway Bridge Disaster: May 9, 1980
(http://photos.metrojacksonville.com/photos/2795870275_MgFLM8D-M.jpg)
The worst bridge disaster in Florida history occured when an errant ship struck a major support of the southbound lane during a storm. The main span toppled into Tampa Bay. 35 people lost their lives.
Full Article
http://www.metrojacksonville.com/article/2013-sep-sunshine-skyway-bridge-disaster-may-9-1980
It made for two really long fishing piers and some good artificial reefs. The 1955 vintage approach is closed for concrete deterioration issues.