<P> The weight of the roadway is hung from 250 pairs of vertical suspender ropes, which are attached to two main cables . The main cables pass over the two main towers and are fixed in concrete at each end . Each cable is made of 27,572 strands of wire . The total length of galvanized steel wire used to fabricate both main cables is estimated to be 80,000 miles (130,000 km). </P> <P> The bridge has approximately 1,200,000 total rivets . </P> <P> The color of the bridge is officially an orange vermilion called international orange . The color was selected by consulting architect Irving Morrow because it complements the natural surroundings and enhances the bridge's visibility in fog . Aesthetics was the foremost reason why the first design of Joseph Strauss was rejected . Upon re-submission of his bridge construction plan, he added details, such as lighting, to outline the bridge's cables and towers . In 1999, it was ranked fifth on the List of America's Favorite Architecture by the American Institute of Architects . </P> <P> The bridge was originally painted with red lead primer and a lead - based topcoat, which was touched up as required . In the mid-1960s, a program was started to improve corrosion protection by stripping the original paint and repainting the bridge with zinc silicate primer and vinyl topcoats . Since 1990, acrylic topcoats have been used instead for air - quality reasons . The program was completed in 1995 and it is now maintained by 38 painters who touch up the paintwork where it becomes seriously corroded . </P>

What is the official color of the golden gate bridge royal yellow