Pier 70

Pier 70 is a historic maritime and industrial complex on the eastern waterfront of San Francisco, California, adjacent to the Dogpatch, San Francisco neighborhood and the Mission Bay area. The site developed across the late 19th and early 20th centuries as a center for shipbuilding, repair, and heavy manufacturing associated with the San Francisco Bay shipping lanes, the Transcontinental Railroad, and the expansion of Port of San Francisco. Over its life the complex has intersected with the histories of Union Iron Works, Bethlehem Shipbuilding Corporation, the United States Navy, and numerous labor organizations such as the International Longshore and Warehouse Union.

History

The origins of the parcel trace to the post-Gold Rush waterfront expansion that included the growth of Embarcadero (San Francisco), Montgomery Street, and nearby industrial sites tied to the Central Pacific Railroad. By the 1880s industrialists including Andrew Smith Hallidie-era entrepreneurs and entities such as Union Iron Works established heavy fabrication shops, foundries, and slipways. During the Spanish–American War, World War I, and World War II the complex supported construction and repair for naval and merchant fleets, working with contractors like Bethlehem Steel and feeding vessel production that tied into the Pacific Fleet logistics. In the mid-20th century, deindustrialization, containerization trends linked to Panama Canal shipping shifts, and municipal waterfront redevelopment debates involving figures from the San Francisco Board of Supervisors reduced heavy use, leading to adaptive reuses tied to Bay Area Rapid Transit era planning and later preservation campaigns by local heritage groups and preservationists connected to the National Trust for Historic Preservation.

Architecture and Facilities

The complex comprises multiple large brick and steel buildings, timber piers, dry docks, and machine shops reflecting varied architectural and engineering practices found in late Victorian industrial design and early 20th-century factory planning. Notable structures include heavy fabrication halls with sawtooth roofs akin to those seen in facilities linked to Henry J. Kaiser-era shipyards, masonry machine shops comparable to those at Bethlehem Sparrow Point, and shed-roofed warehouses paralleling designs used by the Western Pacific Railroad. Architectural elements reflect construction techniques contemporaneous with works by firms associated with Daniel Burnham-era planning and industrial engineers influenced by the American Society of Mechanical Engineers. Waterfront infrastructure integrates pilings, slips, and cranes similar to those at Pier 39 and Fisherman's Wharf (San Francisco), though the site's scale and surviving historic fabric align it with larger complexes such as Brooklyn Navy Yard and Hunters Point Naval Shipyard.

Industrial and Shipbuilding Operations

Historically the shipyard operations executed hull fabrication, boiler-making, engine assembly, and outfitting for both commercial and military vessels. Companies operating on the grounds included established builders and subcontractors that collaborated with entities like Union Iron Works and later Bethlehem Shipbuilding Corporation during mass mobilization programs of the World War II era. The site hosted pattern shops, forging presses, and heavy plate shops serving steamer construction that paralleled production at yards involved with fleet expansion tied to the Asiatic Fleet and merchant marine initiatives under policies resonant with the Merchant Marine Act of 1936. Skilled trades practiced there included boilermaking represented by unions with links to national organizations such as the American Federation of Labor and craft training that drew on apprenticeship models associated with institutions like Trade Adjustment Assistance-era vocational efforts.

Redevelopment and Preservation

Late 20th- and early 21st-century redevelopment debates involved city planning agencies, preservation advocates, and private development firms negotiating between commercial mixed-use proposals and conservation of historic fabric. Adaptive reuse proposals sought to convert heavy industrial buildings into office, manufacturing, and research spaces in dialogue with organizations like San Francisco Planning Department, philanthropic actors in the vein of The Presidio Trust-style interventions, and venture-backed developers with ties to Silicon Valley entities such as Google and Salesforce. Preservation efforts leveraged designations and conservation easements modeled on approaches used at the Tampa Shipbuilding Company and Gowanus Canal precincts, while environmental remediation addressed legacy contamination issues similar to those overseen under state programs like the California Department of Toxic Substances Control. The negotiated outcomes emphasized retention of landmark structures while accommodating contemporary uses tied to technology, maritime heritage museums, and light manufacturing.

Cultural and Community Use

The waterfront complex has increasingly hosted cultural institutions, public arts programming, and community-oriented events touching stakeholders such as neighborhood groups from Dogpatch, San Francisco, local arts nonprofits modeled after Yerba Buena Center for the Arts, and maritime heritage organizations similar to the San Francisco Maritime National Historical Park. Redevelopment plans incorporated space for galleries, performance venues reflecting the adaptive reuse precedent at Pier 39, and makerspaces akin to initiatives at Fort Mason Center for Arts & Culture, aiming to attract artists, craftspeople, and small manufacturers. Community engagement processes included consultations with representatives from the San Francisco Arts Commission, labor unions such as the International Brotherhood of Electrical Workers, and stewardship proposals coordinated with conservationists from institutions comparable to the National Trust for Historic Preservation.

Category:San Francisco Category:Shipyards in California