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San Francisco9 min

Fort Point

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.

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San Francisco · 9 min listen · 3 sources

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.

1Built by the US Army Corps of Engineers between 1853 and 1861
2A crew of 200, many of them unemployed miners, worked eight years on it
3Designed to mount well over a hundred cannon, firing through iron-lined openings in five-foot-thick walls

Full transcript

1

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.

2

The Builders and Their Eight Years

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3

What the Fort Was Designed to Do

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4

The Guns That Never Fired

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5

Why Brick Became Worthless

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6

The Lifespan in Between

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7

The Bridge That Almost Ate It

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8

The Arch and Its Politics

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9

World War Two and the Submarines That Didn't Come

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10

Becoming a Park

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11

What You Are Standing In

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Deep-dive audio

  1. 1The Orders from Washington0:58Free preview
  2. 2The Builders and Their Eight Years0:53Unlock to listen
  3. 3What the Fort Was Designed to Do0:48Unlock to listen
  4. 4The Guns That Never Fired0:55Unlock to listen
  5. 5Why Brick Became Worthless0:53Unlock to listen
  6. 6The Lifespan in Between0:49Unlock to listen
  7. 7The Bridge That Almost Ate It0:54Unlock to listen
  8. 8The Arch and Its Politics0:42Unlock to listen
  9. 9World War Two and the Submarines That Didn't Come0:45Unlock to listen
  10. 10Becoming a Park0:43Unlock to listen
  11. 11What You Are Standing In0:45Unlock to listen
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Frequently asked

Did Fort Point ever fire on an enemy?
No. The garrison mounted its first gun in 1861 and waited out the war for a Confederate raider that never entered the strait. Soldiers came back during the Second World War to watch for Japanese submarines and again saw nothing. By 1900 the smooth-bore guns had been dismounted and sold for scrap.
Why is the fort underneath the Golden Gate Bridge?
The bridge's southern approach had to land where the fort already stood. Rather than clear the site, chief engineer Joseph Strauss designed a steel arch to carry the roadway over the brickwork, spending money to keep a structure the Army no longer wanted. That decision is the only reason it survives.
What made a brick fort obsolete so quickly?
Rifled artillery. Spiral grooves in a gun barrel spin the shell, which multiplies accuracy and range, and during the war rifled guns tore apart the masonry of Fort Pulaski and Fort Sumter on the Atlantic coast. Walls seven feet thick were suddenly no defense, so the Army stopped building forts of this type.
When did it become a national park site?
President Richard Nixon signed the legislation on October 16, 1970, creating Fort Point National Historic Site after a campaign by preservationists and bridge engineers. The National Park Service has run it since. Two years later the surrounding Golden Gate National Recreation Area was established around it.

This one is a deep dive

A 9-minute deep dive: 11 chapters with text and audio. Chapter one previews at no charge; the rest unlocks once.