During the week of March 29 the Gowanus Remediation Team continued pin pile installation and dredging along the canal.
This week dredging resumed between the Carroll Street Bridge and the Union Street Bridge. The dredged material is loaded from smaller “mini” hopper barges that can navigate the narrow canal to the transloading area at Huntington Street. The dredged material is then dewatered and transloaded to larger barges and shipped across New York Harbor to the dredged material processing facility in New Jersey.
The GRT mobilized a work barge and positioned it between the Carroll Street Bridge and the 3rd Street Bridge. This barge is utilized for staging equipment and materials that are necessary to complete ongoing pile driving operations.
Crews installed pin piles north of the Carroll Street Bridge. Pin pile installation involves driving steel piles (similar to steel beams) into the canal bed at multiple locations in order to support steel templates utilized as a guide for pipe pile installation. Pipe piles will be installed at TB1 to create a temporary bulkhead wall to support fill materials on the upland side of the canal while dredging occurs. Ultimately, the Carroll Street Bridge and the Union Street Bridge will have pipe pile walls installed as bulkheads to support the bridge abutments during future phases of dredging.
Next week our crews will continue dredging between the Carroll Street Bridge and the Union Street Bridge and installing piles at Turning Basin 1.
The Carroll Street Bridge will remain in the open position while the New York City Department of Transportation (NYCDOT) performs maintenance on the bridge. Carroll Street will be closed to vehicular and pedestrian traffic until further notice.
Photos of construction activities are provided below.