Planning for a larger-capacity replacement began in 1978. Original plans ranged from a large, multi-lane suspension (or similar type) bridge, to two parallel bridges (with the central span reserved for HOV lanes). As traffic projections increased, further exacerbated by a disaster on the Sunshine Skyway Bridge in 1980, it was clear that the new bridge would need to handle at least eight lanes (four in each direction). By 1987, it was concluded that a parallel, four lane span would be built. Plans were also made to rehabilitate the older bridge after the new bridge opened.