<prompt> Nyorai kupfuurira kweiyi ndima - Muna 1928, Purcell akagadzwa naGavhuna C. C. Young saCalifornia State Highway Engineer. Muna 1929, akagadzwa kuva chipangamazano wehunyanzvi ku1929 Hoover-Young San Francisco-Oakland Bay Bridge Commission, iyo yakaraira kuvakwa kweiyo-refu San Francisco-Oakland Bay Bridge. Dare racho parakapedza basa raro, Purcell akagadzwa naGavhuna Jim Rolph kuti ave Injiniya Mukuru aiva nebasa rokugadzira nokuvaka zambuko racho. Munguva yokuvaka, basa racho rakarambidzwa nokuramwa basa kwevashandi vomugungwa muna 1934  <response>: . Pasinei nematambudziko aya nemamwe akawanda, bhiriji racho rakapedzwa pachine mwedzi yakati wandei risati raitwa. Chikamu chokumadokero chebhiriji chaivimba neanchorage yepakati-yakareba, iri pasi pemvura. Ndicho chiteshi chengarava chikuru kupfuura zvose munyika. Mugero waipfuura nechiwi cheYerba Buena panguva iyoyo wakanga uri mugero wakakura zvikurusa wenyika. Kupedzwa kwaro kwaiva kuzadzika kwezviroto zvakatanga kufungwa nevagari vomunharaunda muna 1850. Pakupera kwayo, yakanga iri bhiriji refu zvikurusa uye, pamadhora 77 600 000, bhiriji rinodhura zvikurusa rakambovakwa. Vashandi vanopfuura 6 500 vakashanda pabasa racho. 