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
Golden Gate Bridge patterns. On weekday mornings, traffic flows mostly southbound into the city, so four of the six lanes run southbound. Conversely, on weekday afternoons, four lanes run northbound. During off-peak periods and weekends, traffic is split with three lanes in each direction. From 1968 to 2015, opposing traffic was separated by small, plastic pylons, and during that time, there were 16 fatalities resulting from 128 head-on collisions. To improve safety, the speed limit on the Golden Gate Bridge was reduced from on October 1, 1983. Although there had been discussion concerning the installation of a movable barrier since the 1980s, only