Friday, November 28, 2014

Golden Gate Bridge

The Golden Gate Bridge is a suspension bridge spanning the Golden Gate strait, the mile-wide, three-mile-long channel between San Francisco Bay and the Pacific Ocean. The structure links the U.S. city of San Francisco, on the northern tip of the San Francisco Peninsula, to Marin County, bridging both U.S. Route 101 and California State Route 1 across the strait. The bridge is one of the most internationally recognized symbols of San Francisco, California, and the United States. It has been declared one of the Wonders of the Modern World by the American Society of Civil Engineers 

The Frommers travel guide considers the Golden Gate Bridge "possibly the most beautiful, certainly the most photographed, bridge in the world"It opened in 1937 and was, until 1964, the longest suspension bridge main span in the world, at 4,200 feet (1,300 m)

Before the bridge was built, the only practical short route between San Francisco and what is now Marin County was by boat across a section of San Francisco Bay. Ferry service began as early as 1820, with regularly scheduled service beginning in the 1840s for purposes of transporting water to San Francisco.

The Sausalito Land and Ferry Company service, launched in 1867, eventually became the Golden Gate Ferry Company, a Southern Pacific Railroad subsidiary, the largest ferry operation in the world by the late 1920s. Once for railroad passengers and customers only, Southern Pacific's automobile ferries became very profitable and important to the regional economy. The ferry crossing between the Hyde Street Pier in San Francisco and Sausalito in Marin County took approximately 20 minutes and cost US$1.00 per vehicle, a price later reduced to compete with the new bridge. The trip from the San Francisco Ferry Building took 27 minutes.

Many wanted to build a bridge to connect San Francisco to Marin County. San Francisco was the largest American city still served primarily by ferry boats. Because it did not have a permanent link with communities around the bay, the city's growth rate was below the national average.[13] Many experts said that a bridge couldn’t be built across the 6,700 ft (2,042 m) strait. It had strong, swirling tides and currents, with water 372 ft (113 m) deep[14] at the center of the channel, and frequent strong winds. Experts said that ferocious winds and blinding fogs would prevent construction and operation.

Although the idea of a bridge spanning the Golden Gate was not new, the proposal that eventually took hold was made in a 1916 San Francisco Bulletin article by former engineering student James Wilkins.[15] San Francisco's City Engineer estimated the cost at $100 million, which would have been $2.12 billion in 2009, and impractical for the time. He asked bridge engineers whether it could be built for less. One who responded, Joseph Strauss, was an ambitious engineer and poet who had, for his graduate thesis, designed a 55-mile-long (89 km) railroad bridge across the Bering Strait. At the time, Strauss had completed some 400 drawbridges—most of which were inland—and nothing on the scale of the new project.Strauss's initial drawings were for a massive cantilever on each side of the strait, connected by a central suspension segment, which Strauss promised could be built for $17 million.

Local authorities agreed to proceed only on the assurance that Strauss would alter the design and accept input from several consulting project experts.[citation needed] A suspension-bridge design was considered the most practical, because of recent advances in metallurgy.

Strauss spent more than a decade drumming up support in Northern California. The bridge faced opposition, including litigation, from many sources. The Department of War was concerned that the bridge would interfere with ship traffic. The navy feared that a ship collision or sabotage to the bridge could block the entrance to one of its main harbors. Unions demanded guarantees that local workers would be favored for construction jobs. Southern Pacific Railroad, one of the most powerful business interests in California, opposed the bridge as competition to its ferry fleet and filed a lawsuit against the project, leading to a mass boycott of the ferry service. 

In May 1924, Colonel Herbert Deakyne held the second hearing on the Bridge on behalf of the Secretary of War in a request to use federal land for construction. Deakyne, on behalf of the Secretary of War, approved the transfer of land needed for the bridge structure and leading roads to the "Bridging the Golden Gate Association" and both San Francisco County and Marin County, pending further bridge plans by Strauss.[18] Another ally was the fledgling automobile industry, which supported the development of roads and bridges to increase demand for automobiles. 

The bridge's name was first used when the project was initially discussed in 1917 by M.M. O'Shaughnessy, city engineer of San Francisco, and Strauss. The name became official with the passage of the Golden Gate Bridge and Highway District Act by the state legislature in 1923. 



Preliminary discussions leading to the eventual building of the Golden Gate Bridge were held on January 13, 1923, at a special convention in Santa Rosa, CA. The Santa Rosa Chamber was charged with considering the necessary steps required to foster the construction of a bridge across the Golden Gate by then Santa Rosa Chamber President Frank Doyle (the street Doyle Drive leading up to the bridge is named after him). On June 12, the Santa Rosa Chamber voted to endorse the actions of the "Bridging the Golden Gate Association" by attending the meeting of the Boards of Supervisors in San Francisco on June 23 and by requesting that the Board of Supervisors of Sonoma County also attend. By 1925, the Santa Rosa Chamber had assumed responsibility for circulating bridge petitions as the next step for the formation of the Golden Gate Bridge
Strauss was chief engineer in charge of overall design and construction of the bridge project. However, because he had little understanding or experience with cable-suspension designs,responsibility for much of the engineering and architecture fell on other experts. Strauss' initial design proposal (two double cantilever spans linked by a central suspension segment) was unacceptable from a visual standpoint. The final graceful suspension design was conceived and championed by New York’s Manhattan Bridge designer Leon Moisseiff.

Irving Morrow, a relatively unknown residential architect, designed the overall shape of the bridge towers, the lighting scheme, and Art Deco elements, such as the tower decorations, streetlights, railing, and walkways. The famous International Orange color was originally used as a sealant for the bridge. The US Navy had wanted it to be painted with black and yellow stripes to ensure visibility by passing ships.

Senior engineer Charles Alton Ellis, collaborating remotely with Moisseiff, was the principal engineer of the project.[23] Moisseiff produced the basic structural design, introducing his "deflection theory" by which a thin, flexible roadway would flex in the wind, greatly reducing stress by transmitting forces via suspension cables to the bridge towers. Although the Golden Gate Bridge design has proved sound, a later Moisseiff design, the original Tacoma Narrows Bridge, collapsed in a strong windstorm soon after it was completed, because of an unexpected aeroelastic flutter. Ellis was also tasked with designing a "bridge within a bridge" in the southern abutment, to avoid the need to demolish Fort Point, a pre-Civil War masonry fortification viewed, even then, as worthy of historic preservation. He penned a graceful steel arch spanning the fort and carrying the roadway to the bridge's southern anchorage.

Ellis was a Greek scholar and mathematician who at one time was a University of Illinois professor of engineering despite having no engineering degree. He eventually earned a degree in civil engineering from the University of Illinois prior to designing the Golden Gate Bridge and spent the last twelve years of his career as a professor at Purdue University. He became an expert in structural design, writing the standard textbook of the time. Ellis did much of the technical and theoretical work that built the bridge, but he received none of the credit in his lifetime. In November 1931, Strauss fired Ellis and replaced him with a former subordinate, Clifford Paine, ostensibly for wasting too much money sending telegrams back and forth to Moisseiff.[26] Ellis, obsessed with the project and unable to find work elsewhere during the Depression, continued working 70 hours per week on an unpaid basis, eventually turning in ten volumes of hand calculations.



With an eye toward self-promotion and posterity, Strauss downplayed the contributions of his collaborators who, despite receiving little recognition or compensation, are largely responsible for the final form of the bridge. He succeeded in having himself credited as the person most responsible for the design and vision of the bridge. Only much later were the contributions of the others on the design team properly appreciated.[ In May 2007, the Golden Gate Bridge District issued a formal report on 70 years of stewardship of the famous bridge and decided to give Ellis major credit for the design of the bridge.

In March 2008 the Golden Gate Bridge District board approved a resolution to start congestion pricing at the Golden Gate Bridge, charging higher tolls during peak hours, but rising and falling depending on traffic levels. This decision allowed the Bay Area to meet the federal requirement to receive $158 million in federal transportation funds from USDOT Urban Partnership grant.[63] As a condition of the grant, the congestion toll was to be in place by September 2009.

The first results of the study, called the Mobility, Access and Pricing Study (MAPS), showed that a congestion pricing program is feasible.[66] The different pricing scenarios considered were presented in public meetings in December 2008.

In August 2008 transportation officials ended the congestion pricing program in favor of varying rates for metered parking along the route to the bridge including on Lombard Street and Van Ness Avenue.[68]

Suicides[edit]

As a suicide prevention initiative, this sign promotes a special telephone available on the bridge that connects to a crisis hotline.

The jumpers mapped by location. (2005)

Official count of the jumpers ended 1995 on 997.

Newspaper clipping from the San Francisco Examiner of the youngest jumper, Marilyn DeMont (5)
The Golden Gate Bridge is the second-most used suicide site/suicide bridge in the world, after the Nanjing Yangtze River Bridge (see List of suicide sites).The deck is about 245 feet (75 m) above the water. After a fall of four seconds, jumpers hit the water at around 75 mph or about 120 km/h. Most of the jumpers die from impact trauma. About 5% of the jumpers survive the initial impact but generally drown or die of hypothermia in the cold water.

Most suicidal jumps occur on the side facing the bay. The side facing the Pacific is closed to pedestrians.

An official suicide count was kept until the year 1995, sorted according to which of the bridge's 128 lamp posts the jumper was nearest when he or she jumped. The official count ended on June 5, 1995 on the 997th jump; jumper No. 1000, Eric Atkinson (25), jumped on July 3, 1995.[74] Earlier in 1995, a local shock jock had offered a case of Snapple to the family of the 1000th suicide victim. Consequently, Marin County coroner Ken Holmes asked local media to stop reporting the total number of jumpers. By 2012 the unofficial count exceeded 1,600 (in which the body was recovered or someone saw the jump)[78] and new suicides were occurring about once every two weeks, according to a San Francisco Chronicle analysis.The most suicides in one month were in August 2013, when 10 jumped, one every three days. The total count for the year 2013 was 46, with an additional 118 attempts prevented, making it the year with the highest tally so far. The rate of incidence has risen to nearly one every other day. The youngest jumper has been 5 year old Marilyn DeMont, who was told to jump and was followed by her father in June 1945.

For comparison, the reported third-most popular place to commit suicide in the world, Aokigahara Forest in Japan, has a record of 108 bodies, found within the forest in 2004, with an average of 30 a year. There were 34 bridge-jump suicides in 2006 whose bodies were recovered, in addition to four jumps that were witnessed but whose bodies were never recovered, and several bodies recovered suspected to be from bridge jumps. The California Highway Patrol removed 70 apparently suicidal people from the bridge that year.

There is no accurate figure on the number of suicides or completed jumps since 1937, because many were not witnessed. People have been known to travel to San Francisco specifically to jump off the bridge, and may take a bus or cab to the site; police sometimes find abandoned rental cars in the parking lot. Currents beneath the bridge are strong and some jumpers have undoubtedly been washed out to sea without being seen.

The fatality rate of jumping is roughly 98%. As of July 2013, only 34 people are known to have survived the jump. Those who do survive strike the water feet-first and at a slight angle, although individuals may still sustain broken bones or internal injuries. One young woman, Sarah Rutledge Birnbaum, survived, but returned to jump again and died the second time.[84] One young man survived a jump in 1979, swam to shore, and drove himself to a hospital. The impact cracked several of his vertebrae.[85] On March 10, 2011, 17-year-old Luhe "Otter" Vilagomez from Windsor High School in Windsor, California, survived a jump from the bridge, breaking his coccyx and puncturing one lung, though he said his attempt was for "fun" and not suicide. The teen was helped to shore by Frederic Lecouturier, 55, who was surfing under the bridge when he saw Vilagomez jump.The California Highway Patrol ("CHP") recommended that the San Francisco District Attorney's Office charge the student with misdemeanor trespassing (a charge that entails climbing any rail, cable, suspender rope, tower or superstructure not intended for public use), punishable by up to a year in the county jail and/or a fine up to $10,000. Additionally, the CHP Marin Area recommended the teen undergo a medical/psychiatric evaluation by medical professionals.

Engineering professor Natalie Jeremijenko, as part of her "Bureau of Inverse Technology" art collective, created a "Despondency Index" by correlating the Dow Jones Industrial Average with the number of jumpers detected by "Suicide Boxes" containing motion-detecting cameras, which she claimed to have set up under the bridge.[90] The boxes purportedly recorded 17 jumps in three months, far greater than the official count. The Whitney Museum, although questioning whether Jeremijenko's suicide-detection technology actually existed, nevertheless included her project in its prestigious Whitney Biennial.

Various methods have been tried to reduce the number of suicides. The bridge is fitted with suicide-hotline telephones and staff patrol the bridge in carts, looking for people who appear to be planning to jump. Ironworkers on the bridge also volunteer their time to prevent suicides by talking to or wrestling down suicidal people.[92] The bridge is now closed to pedestrians at night. Cyclists are still permitted across at night, but can buzz themselves in and out through the remotely controlled security gates.[93] Attempts to introduce a suicide barrier have been thwarted by engineering difficulties, high costs, and public opposition.[94] One recurring proposal had been to build a barrier to replace or augment the low railing, a component of the bridge's original architectural design, as amended by the second designer in the final blueprint.[A] New barriers have eliminated suicides at other landmarks around the world, but were opposed for the Golden Gate Bridge for reasons of cost, aesthetics, and safety, as the load from a poorly designed barrier could significantly affect the bridge's structural integrity during a strong windstorm. On June 27, 2014 California approved a funding plan to install a suicide barrier beneath the bridge to catch suicide jumpers.

Strong appeals for a suicide barrier, fence, or other preventive measures were raised again by a well-organized vocal minority of psychiatry professionals, suicide barrier consultants, and families of jumpers beginning in January 2005. These efforts were given momentum by two films dealing with the topic of suicide and the Golden Gate Bridge. On January 14, 2005 the San Francisco Chronicle published an open letter by writer-director Jenni Olson calling for a suicide barrier on the Golden Gate Bridge.[96] The letter was, in part, an excerpt from the script of her film The Joy of Life, which world-premiered the following week, on January 20, 2005, at the Sundance Film Festival. The day before, on January 19, 2005, the Chronicle broke the news that filmmaker Eric Steel had been shooting suicide leaps from the bridge during 2004 for his film The Bridge, which would be released in 2006. A week later, The Joy of Life world-premiered at the Sundance Film Festival and video copies of the film were circulated to members of the Bridge District board of directors with the help of the Psychiatric Foundation of Northern California.

In the fall of 2005 the San Francisco Chronicle published a seven-part series of articles, titled "Lethal Beauty", focusing on the problem of suicide and the Golden Gate Bridge and emphasizing that a solution was possible but even desirable.

The 2006 release of The Bridge exerted additional pressure on the Bridge District and created continued public awareness. Filmmaker Eric Steel and his production crew spent 2004 filming the bridge from several vantage points, in order to film actual suicide jumps. The film chronicled 23 jumps, most notably that of Gene Sprague, as well as a handful of thwarted attempts. The film also contained interviews with surviving family members of those who jumped; interviews with witnesses; and, in one segment, an interview with Kevin Hines who, as a 19-year-old in 2000, survived a suicide plunge from the span and is now a vocal advocate for some type of bridge barrier or net to prevent such incidents.


Kevin Briggs, a highway patrolman on the bridge, is credited with saving hundreds of lives of would-be jumpers by talking to them before they can take the plunge. Despite past suicides, Briggs and others in his department estimate that they save at least 80–90% of people bent on jumping thanks to cameras and their own dialogue.