NINTH STREET BRIDGE OVER GOWANUS CANAL
Reconstruction included demolition, removal and disposal of existing rolling leaf bascule bridge superstructure, machinery and controls, piers and abutments. Construction of new lift bridge included superstructure, machinery, control house, fender system, piers and abutments. Twenty stepped diameter caissons were installed to rock depths of up to 180 feet. All work had to be performed beneath existing NYCT elevated structure requiring temporary support of existing columns.