▁California ▁Gold ▁R ush . ▁A ▁mine ▁in ▁the ▁area ▁produced ▁gold ▁quart z . ▁ ▁In ▁ 1 8 5 1 , ▁the ▁Middle ▁Bar ▁Bridge ▁was ▁built ▁over ▁the ▁M ok el um ne ▁River ▁to ▁handle ▁the ▁large ▁amount ▁of ▁gold ▁seek ers ▁coming ▁through ▁the ▁area . ▁The ▁following ▁years , ▁ 1 8 5 2 , ▁a ▁flo od ▁was hed ▁the ▁bridge ▁away . ▁Another ▁bridge ▁was ▁built ▁with ▁claims ▁stating ▁it ▁was ▁high ▁enough ▁it ▁would ▁not ▁get ▁was hed ▁away . ▁It ▁was ▁finished ▁in ▁November , ▁ 1 8 5 2 , ▁and ▁cost ▁$ 2 5 , 0 0 0 ▁to ▁build . ▁It ▁stood ▁for ▁approximately ▁ten ▁years ▁until ▁another ▁flo od ▁dis located ▁the ▁bridge . ▁ ▁After ▁the ▁first ▁gold ▁r ush , ▁the ▁area ▁experienced ▁a ▁second ▁round ▁of ▁increased ▁population ▁in ▁the ▁ 1 9 2 0 s ▁during ▁a ▁smaller ▁min ing ▁r ush . ▁ ▁Event ually , ▁the ▁homes ▁of ▁Middle ▁Bar ▁were ▁purchased ▁by ▁the ▁East ▁Bay ▁Municipal ▁Util ity ▁District . ▁The ▁company ▁had ▁built ▁the ▁Par de e ▁Dam , ▁six ▁miles ▁away . ▁ ▁Pres ent ▁day ▁In ▁the ▁present ▁day ▁a ▁tr uss ▁bridge ▁cross es ▁the ▁M ok el um ne ▁River ▁at ▁the ▁town ▁site , ▁connecting ▁the ▁river ▁banks ▁in ▁Am ador ▁County ▁and ▁C ala ver as ▁County , ▁California . ▁ ▁See ▁also ▁ ▁California ▁Historical ▁Land marks ▁in ▁Am ador ▁County , ▁California ▁