OUACHITA RIVER BRIDGE, MONROE, LOUISIANA
Monroe’s DeSiard Street Bridge swing span was replaced with a new bob-tailed swing span. The driven piles used to support the existing railroad swing bridge had become unstable due to scour, requiring a new foundation. LA DOTD temporarily stabilized the existing foundation with riprap, and then decided to permanently fix the existing support piers with a new drilled shaft foundation. Case Atlantic installed drilled shafts for support of the new swing span and bridge operator’s house.
SANDCASTLE MOTEL RENOVATION, CLEARWATER, FLORIDA
Case Atlantic’s years of experience operating in tight-access conditions without negatively impacting the surrounding area was a key factor to the success of the Sandcastle Motel renovation. The renovation included construction of a new fourth floor, requiring the installation of shearwall foundations within a very narrow space. By pumping the concrete from the motel parking lot, and opting to use a small, truckmounted rig, Case Atlantic operated within the site confines without interrupting pedestrian and vehicle access.
PASCAGOULA RIVER BRIDGE, PASCAGOULA, MISSISSIPPI
Working double shifts, Case Atlantic installed drilled shaft foundations for the new 3,580-ft long, 135-ft wide Pascagoula River Bridge’s one land-based and seven water-based bents. Utilizing a pre-assembled fixed template, the permanent casings were vibrated in place. As work was completed at each bent, the template was disassembled and moved to the next location. Case Atlantic maintained waterway navigability during construction.
MCNULTY STATION PARKING DECK, ST. PETERSBURG, FLORIDA
Fast-track construction is something Case Atlantic knows well. Construction of a multistory parking deck with space for retail shops required the installation of drilled shafts in an accelerated work environment. An adjacent high-rise building required monitoring for vibrations. As an example of Case Atlantic's aptitude for precision, the shafts were installed within three feet of sensitive fiber optic line critical to the downtown business section.
WEST COBB LOOP ROAD BRIDGE, COBB COUNTY, GEORGIA
The 2,992-ft long West Cobb Loop Road bridge crosses Ward Creek and Noses Creek, in South Georgia. At 83 feet, 3 inches wide, it has 73 bents with spans ranging from 40 to 120 feet at the Noses Creek crossing. With work pads set up at each bent, Case Atlantic installed rock-socketed drilled shafts to span these wetlands. Major sections of the work area were covered by standing water ranging from a few inches to several feet deep.
COOPER RIVER BRIDGE, CHARLESTON, SOUTH CAROLINA
Massive drilled shafts were installed for SCDOT’s Cooper River Bridge Replacement Project. Working in a diverse environment, including land, water, barges and trestle, Case Atlantic installed the foundation shafts for the largest cable-stayed span in North America, stretching 1,546 ft between the Charleston peninsula and the town of Mt. Pleasant. This operation required extraordinary coordination and careful handling of the surrounding environment.
CUMBERLAND STREET PARKING GARAGE, CHARLESTON, SOUTH CAROLINA
When careful planning and implementation were needed on this project, Case Atlantic delivered by providing straight and belled shafts to sustain a new parking deck constructed directly adjacent to the Powder Magazine (circa 1719), the oldest building in Charleston, SC. The close proximity (100 ft) of this and other historic structures required monitoring for vibrations which were kept at acceptable levels, ensuring structural integrity.
REPLACEMENT OF U.S. 31 ROAD BRIDGE, MONTGOMERY, ALABAMA
Highly commended by the Alabama DOT, Case Atlantic's work on the complex replacement of the U.S. 31 bridge crossing the Alabama River in Autauga County, near Montgomery, showcased the largest ever bentonite slurry-supported holes in Alabama.