This Project consists of the construction of a 5-lane double leaf bascule bridge supported on 18" piles and mass concrete foundations. The new bridge will replace the aging 2 lane double swing span structure currently in service. Each pier is constructed with 500 cy of heavily reinforced concrete, which supports the 650t drawspans. Each drawspan is constructed of 350t plate girder steel and 300t of reinforced concrete counterweight positioned overhead. Heel and counterweight sections will be constructed at the site with the leaf preassembled off site and lifted in place with Tidewaters 350t stiff leg derrick 'Samson' during an AIWW shutdown. Under the concrete approaches two mechanical rooms which will be constructed to house the hydraulic machinery. Associated work includes the construction of the three level operators house, reconstruction of approximately 900lf of bulkhead and a new fender system. |