I-95 Sound Walls?-?Miami, Fla.
The 18-month project constructed a sound wall spanning 30 miles of Interstate 95 through Miami for the Florida Department of Transportation. Crews demolished the existing footings and a barrier wall and constructed new footings, 210,000 square feet of cast-in-place barrier wall and 1.1 million square feet of cast-in-place textured noise wall, ranging from 11 to 19 feet in height. The wall's close proximity to traffic (typically 8 feet) and the need to withstand vehicle impacts require the cast-in-place method. Additional work included more than 1 million square feet of formwork, more than nine million pounds of rebar and more than 46,000 cubic yards of concrete.
Due to heavy traffic on I-95, lane closures were only allowed at night. The majority of noise wall operations were completed at night, while footings and barrier wall construction occurred during the daytime activities.