Daraja ni kuzaliwa

Kushiriki accolade na Alcatraz Island kama moja ya alama kumi za juu za juu katika Marekani, " Golden Gate Daraja ni rahisi ... Hadithi.

Eighty-six years ago, on January 5, 1933, construction of this iconic San Francisco landmark started when workers began excavating 3.25 million cubic feet of dirt to accommodate the structure’s huge anchorages.

As the Gold Rush introduced the city-by-the-bay to immigrants from around the world, beginning in 1849, speculators soon realized that the land north of San Francisco would become increasingly valuable in proportion to its accessibility to the city.

Soon, a plan was hatched to build a bridge that would span the Golden Gate, a narrow, 400-foot deep strait that serves as the mouth of the San Francisco Bay, connecting the San Francisco Peninsula with the southern end of Marin County.

Ingawa wazo akaenda nyuma mbali kama 1869, pendekezo alichukua mzizi katika 1916. Mwanafunzi wa zamani wa uhandisi, James Wilkins, akifanya kazi kama mwandishi wa habari na San Francisco Bulletin, alitoa wito wa daraja la kusimamishwa na span ya katikati ya miguu 3,000, karibu mara mbili ya urefu wa maisha. Wazo la wilkins lilikuwa inakadiriwa gharama ya $100,000,000 ya ajabu. Kwa hiyo, mhandisi wa jiji la San Francisco, Michael M. O'Shaughnessy (pia ana sifa ya kuja na jina Golden Gate Daraja) ilianza kuuliza wahandisi wa daraja kama wanaweza kufanya hivyo kwa chini.

Mhandisi na mshairi Joseph Strauss, mwenye umri wa chini wa futi 5-Cincinnati-aliyezaliwa, alisema angeweza.

Hatimaye, O'Shaughnessy na Strauss alihitimisha wanaweza kujenga safi kusimamishwa daraja ndani ya aina ya vitendo ya $25-30 milioni na span kuu angalau 4,000 miguu. Mpango wa ujenzi bado unakabiliwa na upinzani, ikiwa ni pamoja na madai, kutoka vyanzo vingi. Kwa wakati zaidi ya vikwazo walikuwa kuondolewa, unyogovu mkubwa wa 1929 walikuwa wameanza, kupunguza chaguzi za fedha, hivyo maafisa wanaamini wapiga kura ya kusaidia $35,000,000 katika bonded wadeni, akitoa nafasi ya kazi ambayo itakuwa iliyoundwa kwa ajili ya mradi. Hata hivyo, vifungo haviwezi kuuzwa hadi 1932, wakati Benki Kuu ya San-Francisco ya Marekani ilikubali kununua mradi mzima ili kusaidia uchumi wa ndani.

The Golden Gate Bridge officially opened on May 27, 1937, the longest bridge span in the world at the time. The first public crossing had taken place the day before, when 200,000 people walked, ran and even roller skated over the new bridge.

With its tall towers and famous red paint job, the bridge quickly became a famous American landmark, and a symbol of San Francisco. She still stands tall and proud and is one of the Top Ten Modern Wonders of the World.