I-San Diego-Coronado Bridge (evame ukubizwa ngokuthi iCoronado Bridge) ibhuloho elingama-2.12-mile elivulela i-San Diego Bay futhi lixhuma iSidolobha saseSan Diego neDolobha laseCoronado. Yindlela enkulu yokufinyelela emabhishi aseCoronado kanye nesikhungo seNorth Island Naval Air, kanye neStrand Strand isthmus ehlanganisa i-Coronado eya e-Imperial Beach nasezweni elisezweni.
Uphi?
I-Coronado Bridge ingafinyelelwa nge- Interstate 5 endaweni yaseBarrio Logan, enyakatho yeNational City.
Ikhuphuka futhi ihla ejika elikhulayo eliphela ku-Fourth Avenue eCoronado.
Yakhiwa Nini?
Ukwakhiwa kwebhuloho kwaqala ngo-1967 futhi kwavulwa ngo-Agasti 3, 1969. URobert Mosher nguye oyisakhiwo esiyinhloko esakhiweni, esenziwe nge-orthotropic steel futhi sinomklamo omncane, onjenge-tublike wokusebenza kahle nomusa. Isakhiwo sisebenzisa ibhande elide eliqhubekayo ebhokisini eliqhubekayo lomhlaba ukufihla ama-brace, ama-joints, kanye nezintamo ezivame ukubonakala kwamanye amabhuloho. UMosher uthi udale izidonga ezingu-30 ngemuva kweBalboa Park eCabrillo Bridge.
Kungani Kubalulekile?
Ukuvulwa kwebhuloho kwaqedwa imishini yokudoba imoto isikhathi eside eyadlula eSan Diego Bay futhi yanikeza ukufinyelela okusheshayo nokulula ku-Coronado. Ukwakhiwa okumnandi nokuhlanzekile kanye nopende oluhlaza okwesibhakabhaka lenze leli bhuloho libe yizimpawu zomhlaba eziphawulekayo kakhulu nezampawu. Umklami uMosher uthi ijika le-90-degree lidinga isikhathi eside kangangokuthi likwazi ukuphakama eliphakeme ngamamitha angu-200 futhi libe yizinga elingamaphesenti angu-4,67, livumele ngisho nomkhumbi wezindiza ukuba ahambe ngaphansi.
Ngo-1970, ithole iMeritory Award yeMerit evela eMelika Institute of Steel Construction.
Amaqiniso & Amanani
I-Coronado Bridge ibiza u-$ 47.6 million ukwakha. Ibhuloho yangaphambili yebhaloji ikhokhele izibopho zalo zokwakha ngo-1986, kanti i-dollar engu-1 yaqedwa ngo-2002. Ibhuloho inemigwaqo emihlanu yethrafikhi futhi ithwala izimoto ezingu-85,000 nsuku zonke.
Izitimela zokukhonta ezikhonjiswe ngamasentimitha angama-34 ziphansi kakhulu ngokwanele ukuvumela umbono ongabonakali, ohlanganisa ukukhanya kweSan Diego , kusukela ezimotweni zomgwaqo. Iziteshi zokuthumela zihanjiswe ibhande elide elide kunazo zonke emhlabeni eliqhubekayo lebhokisi lezintathu ezintathu: izinyawo ezingu-1,880. Imibhoshongo ihlala emaqenjini angama-487 okugcizelelisiwe okuqinisiwe. Ngo-1976, leli bhuloho laphinde lafakwa ngezinduku ezikhethekile ukuvikela ukulimala komhlaba.
Uthi bewazi?
- Ngaphansi komgwaqo kukhona i-catwalk yensimbi eyakhiwe ukuze kube lula ukugcinwa kwebhuloho. I-Caltrans iqhuba ukuhlolwa okujwayelekile ukuze kutholakale ukukhwabanisa kokhonkolo kanye nezindawo ezingenalutho zensimbi ezingenalutho.
- Ngenye yamabhuloho abulala kakhulu e-US, elandela iSan Francisco's Golden Gate Bridge kanye ne-Seattle's Aurora Bridge.
- Umklami uMosher uthathe ucezu lwezintambo ukudweba amaphuzu okuwela ibhuloho nokunquma ijika kanye nezidingo zombuso zebhuloho, njengoba isikhathi sokudinga sidinga ukuba sibe ngaphezu kwamamayela amabili ubude, okwenza indlela eqondile ingenzeki.
- Ukudweba ibhuloho kuwumsebenzi ongapheli. Abasebenzi abayisithupha abasebenza unyaka wonke ukuze bavikeleke ekuphefumulweni kolwandle olwandle. Umbala ohlaza okwesibhakabhaka ukhethwe ukuhlanganiswa nesibhakabhaka nolwandle.