-- The 4,200-foot suspension span was the longest in the world until New York 's Verrazano-Narrows Bridge opened in 1964 . San Francisco 's Golden Gate Bridge opened in May 2007 . The suspension bridge took just over two years to build . A festival celebrating the bridge is set for September .
San Francisco 's Golden Gate Bridge opened in May 2007 . The suspension bridge took just over two years to build . A festival celebrating the bridge is set for September .