Golden Gate

One of the most photographed sights in the world, and in the top 10 longest spans. The bridge's main safety innovation was a net suspended under the floor which saved the lives of 19 men during construction. Those men are the "Half Way to Hell Club."

San Francisco-Oakland Bay Bridge

Construction began after the Golden Gate, but completed 6 months sooner. October 1963 saw the bridge reconfigured with 5 lanes on each deck: top deck westbound; bottom deck for eastbound traffic. The legal name is The James "Sunny Jim" Rolph Bridge.