THE GOLDEN GATE AND BAY BRIDGES

San Francisco’s two famous bridges are engineering and aesthetic triumphs.  Perhaps most impressive of all is that they were built simultaneously at the lowest point of the Great Depression.

THE GOLDEN GATE BRIDGE

IDENTIFYING FEATURES: Red (actually, “International Orange”) in color. Two towers, with box-shaped cross supports

CONNECTS: San Francisco to Marin County

CONSTRUCTION STARTED: 1933

FINISHED: 1937

ENGINEER IN CHARGE: Joseph B. Strauss

WORKERS KILLED DURING CONSTRUCTION: 11

COST: $35,000,000 in 1930s dollars

TRAFFIC: Over 100,000 vehicles daily

FACT: Well over 1,000 people have committed suicide by jumping from the Golden Gate Bridge.

THE BAY BRIDGE (western and eastern spans)

CONNECTS: San Franciso to Yerba Buena Island to Oakland

CONSTRUCTION STARTED: 1933

FINISHED: 1936

ENGINEER IN CHARGE: Charles H. Purcell

WORKERS KILLED DURING CONSTRUCTION: 27

COST: $70,000,000 in 1930s dollars

TRAFFIC: Over 280,000 vehicles daily

FACT: 18% of all steel manufactured in the USA during 1933 went into the Bay Bridge

 

WESTERN SPAN

IDENTIFYING FEATURES: Silver-gray in color.  Four towers, with X-shaped cross supports

ORIGINAL EASTERN SPAN

After it partially collapsed during the 1989 Loma Prieta earthquake, it was repaired and continued to be used until the new eastern span opened in 2013.

REPLACEMENT EASTERN SPAN

The new eastern span (built alongside the old span) is a self-anchored suspension bridge that cost over six billion dollars.  It opened in 2013, a mere 24 years after the original span collapsed.

Here are two photos of the new span, taken by San Francisco photographer Bill Taylor (and here is a link to more of his photos).

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Text and photographs (excluding those in public domain) © 2003-2012 by Mike Humbert.