how long did it take to build the 7 mile bridge in the keys
Seven Mile Bridge The current road bridge was constructed from 1978 to 1982.
Bridge of the Americas The Bridge of the Americas (Spanish: Puente de las AmÃ©ricas; originally known as the Thatcher Ferry Bridge) is a road bridge in Panama, which spans the Pacific entrance to the Panama Canal. Designed by Sverdrup & Parcel, it was completed in 1962 at a cost of US$20 million, connecting the north and south American land masses. Two other bridges cross the canal: the Atlantic Bridge at the Gatun locks (expected 2018) and the Centennial Bridge.[1]