Ka cika wannan magana: A shekara ta 1928, Gwamna C. C. Young ya naɗa Purcell a matsayin Injiniyan Hanyar Jihar California. A shekara ta 1929, an nada shi mai ba da shawara na fasaha ga Hukumar Hoover-Young San Francisco-Oakland Bay Bridge ta 1929, wanda ya ba da izinin gina gadar San Francisco-Oakland Bay. Lokacin da hukumar ta gama aikinta, Gwamna Jim Rolph ya nada Purcell a matsayin Babban Injiniya da ke da alhakin zane da gina gadar. A lokacin ginin, aikin ya dakatar da aikin.
yajin aikin teku na 1934. Duk da waɗannan ƙalubalen da kuma wasu, an kammala gadar watanni da yawa kafin lokacin da aka tsara. Yankin yammacin gadar ya dogara ne akan tsakiya mai tsayi, wanda yake ƙarƙashin saman ruwa. Ita ce tashar jirgin ruwa mafi girma a duniya. Ramin da ya ratsa tsibirin Yerba Buena a lokacin shi ne mafi girma a duniya. Kammalawarsa ita ce cikar burin da 'yan asalin garin suka fara yi a 1850. Bayan kammala shi, shi ne mafi tsawo kuma a $ 77,600,000, gada mafi tsada da aka taɓa ginawa. Fiye da ma'aikata 6,500 ne suka yi aikin.