Skanska was awarded a $21M contract to replace a double-swing span structure with a five-lane, double-leaf bascule bridge. The new bridge is supported on 18-inch piles and mass concrete foundations. Each pier is constructed with 500 cubic yards of heavily reinforced concrete supporting the 650-ton drawspans. Each drawspan is constructed of 350-ton plate girder steel and 300 tons of reinforced concrete counterweight positioned overhead. Heel and counterweight sections were constructed at the site with the leaf preassembled off-site and lifted in place with a 350-ton stiff leg derrick.
Under the concrete approaches, two mechanical rooms were constructed to house the hydraulic machinery. Associated work includes the construction of the three-level operator’s house, reconstruction of approximately 900 linear feet of bulkhead and a new fender system.