1937 CE: GOLDEN GATE BRIDGE

May: Opened in San Francisco

At the time of its opening, it had the longest main suspension span (4,200 feet) in the world; it retained that title until 1964.

As of the closing–point of this work, June 2008, the Akashi–Kaikyo Bridge in Kobe, Japan, had the longest center suspension span (6,529 feet) and the Golden Gate was ranked 9th behind New York’s Verrazano Narrows Bridge (4,250 feet).