The FSK bridge opened in 1977. The Sunshine Skyway Bridge allision was in 1980.
referring to the rebuild of Sunshine Skyway bridge. Rebuilt with hardened pylon barriers/bollards on each side of the main centerline of the bridge- the crossunder portion used by major ships. In any case-all of our major port bridges should have been hardened ever since 9-11. Notwithstanding potential harbor blockage by sinking,which btw was a secondary goal of the jap empire to obstruct the channel in Pearl Harbor in 1941- not a new idea iow.