Quick answer
The Fort Point Civil War defenses were built between 1853 and 1861 at the narrowest part of the Golden Gate, from about seven million bricks and designed for 126 cannons. Not one was ever fired at an enemy. Rifled artillery made masonry forts obsolete within a few years. In the 1930s Joseph Strauss arched the Golden Gate Bridge over the fort rather than demolish it.
Full transcript
The Orders from Washington
In February 1853, the Secretary of War directed the Army Corps of Engineers to begin a third-tier masonry fortification at the entrance to San Francisco Bay. The site had been surveyed for years, and the choice was unromantic: this was the narrowest crossing of the Golden Gate, the only deep-water channel a hostile fleet would have to pass. Earlier coastal batteries at the same spot had been improvised and temporary. Now Washington wanted permanence. The orders specified a brick casemate structure capable of mounting heavy guns in multiple tiers, with seaward-facing embrasures and a fortified land side in case an enemy actually landed. The plan called for more than a hundred cannon positions. The site itself was a windswept point of sand and scrub on the Presidio's southern flank, with no road, no fresh water, and no rail. Everything the fort would be made of had to arrive by sea. Count the brick courses on the seaward wall outside — each one a barge unloaded by hand.
The Builders and Their Eight Years
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What the Fort Was Designed to Do
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The Guns That Never Fired
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Why Brick Became Worthless
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The Lifespan in Between
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The Bridge That Almost Ate It
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The Arch and Its Politics
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World War Two and the Submarines That Didn't Come
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Becoming a Park
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What You Are Standing In
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