Segmental Bridge Widening A First for U.S. Mainland
Crews have completed the widening of a segmental fly-over bridge in Miami-Dade Countya rare construction feat and the first job of its kind in the mainland United States.
Construction of the project that doubled the 29-ft width of the 3,019-ft-long precast concrete, segmental box overpass merging northbound traffic from the Palmetto Expressway onto northbound Interstate 75 began in March of 2003. Davie, Fla.-based Astaldi Construction Corp. took 17 months to complete the $6.4-million contract, increasing the bridge from one lane to two lanes with shoulders while keeping one lane open to traffic.