The Golden Gate Bridge just turned 80 years old — take a look at its historic build

The proposal for a bridge connecting San Francisco and Marin County overcame unlikely odds. Ferry companies fought it because it would cut into their profits carrying some 50,000 commuters a day into the city. Environmentalists thought it would be obtrusive.

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It is said that advocates of the bridge began to spread drawings of what it might look like, and its beauty won over the opposition. District voters approved a $35 million budget.

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On July 9, 1933, President Franklin Roosevelt pressed a button that that set off a charge of dynamite, starting construction work on the historic bridge over the San Francisco Bay.

Crews dug out some 3.25 million cubic feet of dirt to plant the bridge's 12-story-tall towers. Workers dove from a platform to depths of 90 feet to blast away rock and remove debris.

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At 4,200 feet, the Golden Gate Bridge was the longest suspension bridge built at that point. It required 1. 2 million rivets, 80,000 miles of spliced wire, and 254 steel suspender ropes.

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The bridge had an impressive safety record for the time. Still, 11 workers died in four years of construction — 10 on one day when a scaffold fell and tore through a safety net.

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The bridge opened on May 27, 1937, and 200,000 pedestrians walked across. "At last, the mighty task is done," wrote Joseph Strauss, the engineer who dreamt up the bridge.

Today, over 40 million vehicles cross the Golden Gate Bridge every year. It costs $7.25 to ride in the southbound direction — heading into San Francisco from Marin County.

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In 1937, it cost

It's free to cross for pedestrians and bikers. The bridge has hosted protests as well. In January, people linked arms in opposition after the inauguration of President Trump.

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The bridge's beauty has stood the test of time. The late California historian Kevin Starr described the Golden Gate Bridge as "a global icon, a triumph of engineering, and a work of art."

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