▁west ▁of ▁Hamilton , ▁Iowa , ▁United ▁States . ▁It ▁sp ans ▁North ▁C ed ar ▁Creek ▁for ▁. ▁Samuel ▁B . ▁Hamm ond , ▁for ▁whom ▁the ▁bridge ▁is ▁named , ▁requested ▁the ▁Mar ion ▁County ▁Board ▁of ▁Super vis ors ▁in ▁January ▁ 1 8 9 4 ▁to ▁build ▁a ▁bridge ▁near ▁his ▁property . ▁In ▁April ▁of ▁that ▁year ▁they ▁exam ined ▁the ▁site , ▁and ▁in ▁June ▁they ▁contract ed ▁with ▁S . F . ▁Collins ▁to ▁build ▁the ▁How e ▁covered ▁through ▁tr uss . ▁ ▁He ▁completed ▁it ▁later ▁that ▁year . ▁ ▁The ▁stream ▁has ▁been ▁channel ized ▁so ▁the ▁tr uss ▁no ▁longer ▁sp ans ▁the ▁main ▁water ▁flow . ▁ ▁In ▁October ▁ 1 9 7 7 ▁a ▁ ▁tr uck ▁accident ▁closed ▁the ▁bridge ▁for ▁two ▁years , ▁and ▁it ▁re open ed ▁in ▁September ▁ 1 9 7 9 . ▁ ▁The ▁bridge ▁was ▁listed ▁on ▁the ▁National ▁Register ▁of ▁Historic ▁Places ▁in ▁ 1 9 9 8 . ▁ ▁While ▁it ▁remains ▁in ▁place , ▁a ▁newer ▁span ▁was ▁built ▁to ▁carry ▁the ▁vehicle ▁traffic ▁over ▁the ▁cre ek . ▁ ▁References ▁ ▁Category : B rid ges ▁completed ▁in ▁ 1 8 9 4 ▁Category : C over ed ▁brid ges ▁in ▁Iowa ▁Category : B rid ges ▁in ▁Mar ion ▁County , ▁Iowa ▁Category : National ▁Register ▁of ▁Historic ▁Places ▁in ▁Mar ion ▁County , ▁Iowa ▁Category : C over ed ▁brid ges ▁on ▁the ▁National ▁Register ▁of ▁Historic