Golden Gate Bridge stated that uncontrolled pedestrian access was not being considered as part of the 75th anniversary on Sunday, May 27, 2012, because of the additional law enforcement costs required "since 9/11". Until 1964, the Golden Gate Bridge had the longest suspension bridge main span in the world, at . Since 1964 its main span length has been surpassed by thirteen bridges; it now has the second-longest main span in the United States, after the Verrazzano-Narrows Bridge in New York City. The total length of the Golden Gate Bridge from abutment to abutment is . The Golden Gate Bridge's clearance above high
Skansen Bridge the Golden Gate Bridge in San Francisco. The Strauss designed single-leaf iron truss railway bridge with overhead counterweight provides clearance for boat traffic. This type of bridge has a counterweight suspended in a parallelogram, as well as motors and gears to lift and lower the end of the bridge. In 2006, Skansen Bridge received architectural conservation by the Norwegian Directorate for Cultural Heritage ("Riksantikvaren") based upon Skansen Bridge being unique in Norway and only one of a few of its kind left in the world. The conservation includes the entire bridge including construction and technical equipment, the guard cabin and