International orange International orange International orange is a color used in the aerospace industry to set objects apart from their surroundings, similar to safety orange, but deeper and with a more reddish tone. This is the shade used by NASA. The Bell X1, the first airplane to break the sound barrier, was also painted in International Orange. Above is displayed the tone of "international orange" used to paint the Golden Gate Bridge. The tone of international orange used to paint the Golden Gate Bridge is slightly lighter than the standard International orange used by military contractors and in engineering (shown below), thus
Golden Gate completed in 1937, and is an internationally recognized symbol of San Francisco and California in general. Since its completion, the span length has been surpassed by eight other bridges. It still has the second longest suspension bridge main span in the United States, after the Verrazano-Narrows Bridge in New York City. In 2007, it was ranked fifth on the "List of America's Favorite Architecture" by the American Institute of Architects. The Golden Gate strait serves as the primary access channel for nautical travel to and from the San Francisco Bay, one of the largest cargo ports in the United States.