▁Boston ▁and ▁Cambridge ▁over ▁the ▁Charles ▁River . ▁ ▁Michigan ▁ ▁Port age ▁Lake ▁L ift ▁Bridge ▁connecting ▁Han cock ▁and ▁H ought on . ▁The ▁world ' s ▁heav iest ▁and ▁largest ▁double ▁deck ▁vertical ▁lift ▁bridge . ▁ 4 - lane ▁road ▁on ▁upper ▁deck , ▁rail ▁on ▁lower ▁deck ▁( convert ed ▁to ▁trail ). ▁The ▁lower ▁deck ▁was ▁also ▁p aved ▁so ▁the ▁bridge ▁could ▁be ▁placed ▁in ▁an ▁intermediate ▁position ▁to ▁allow ▁road ▁traffic ▁only . ▁ ▁Minnesota ▁ ▁Camp ▁Ri ple y ▁Bridge ▁ ▁Oliver ▁Bridge ▁connecting ▁D ul uth , ▁Minnesota ▁and ▁Oliver , ▁Wisconsin . ▁Rail ▁on ▁upper ▁deck , ▁road ▁on ▁lower ▁deck . ▁ ▁Washington ▁Avenue ▁Bridge ▁– ▁in ▁Min ne apolis ▁across ▁the ▁Mississippi ▁River . ▁Open ed ▁in ▁ 1 9 6 5 , ▁rail ▁( Green ▁Line ▁light ▁rail ) ▁added ▁in ▁ 2 0 1 1 . ▁ ▁Missouri ▁ ▁Second ▁Hann ib al ▁Bridge ▁in ▁Kansas ▁City , ▁Missouri ▁across ▁the ▁Missouri ▁River . ▁Open ed ▁in ▁ 1 9 1 7 , ▁had ▁a ▁road ▁deck ▁until ▁ 1 9 5 6 , ▁when ▁another ▁bridge ▁was ▁built , ▁but ▁the ▁rail ▁deck ▁is ▁presently ▁in ▁use . ▁Ev idence ▁of ▁the ▁road ▁deck ▁is ▁still ▁plain ly ▁visible . ▁A SB ▁Bridge ▁in ▁Kansas ▁City , ▁Missouri , ▁across ▁the ▁Missouri ▁River . ▁Open ed ▁in ▁ 1 9 1 1 , ▁it ▁carried ▁veh icular ▁traffic ▁until ▁ 1 9 8 7 , ▁when ▁new