Los Angeles hasn't gotten a mention yet; although not particularly known for its bridges, the most iconic -- if now replaced -- would have been the 6th street viaduct, which not only bridged the L.A. River, but all the major rail lines coming into town along its banks, plus a big chunk of the warehouse/industrial area east of downtown. I'm definitely making a trip back down to see its rather uniquely-designed replacement once it opens for traffic. But in the interim, the only L.A. bridges that would warrant mention in the same breath are the Vincent Thomas suspension span (CA 47) between Terminal Island and San Pedro, and the new Gerald Desmond bridge replacement between that same island and downtown Long Beach (the southernmost reaches of I-710). And, currently, that's about it!