B09_Amd_1_Site_visit_sign_in_0001.pdf

This file contains details of a federal solicitation opportunity for stabilization work on Alcatraz Wharf. The solicitation number is 140P2021R0143 issued by the National Park Service National Office within the Department of the Interior. The project scope involves making critical repairs to and seismically strengthening the concrete wharf built in 1939 on Alcatraz Island, a contributing feature of the Alcatraz Island National Historic Landmark District. Work includes repairing the historic steel-cased concrete piles, beams and slabs, which are in fair to poor condition with damage. Two new seismic resisting elements will also be installed to upgrade the wharf structure to Risk Category III. Both concrete repairs and seismic improvements will be completed in a single construction phase.