▁sub ur bs ▁in ▁both ▁states ▁has ▁fue led ▁support ▁for ▁a ▁western ▁bridge ▁around ▁the ▁L oud oun ▁County / F air f ax ▁County ▁line ▁in ▁Virginia ▁( V ir gin ia ▁Route ▁ 2 8 / F air f ax ▁County ▁Park way ▁area ), ▁or ▁farther ▁out ▁as ▁part ▁of ▁the ▁Western ▁Transport ation ▁Cor rid or . ▁O pp on ents ▁claim ▁that ▁another ▁bridge ▁would ▁increase ▁development ▁in ▁those ▁areas , ▁increase ▁traffic , ▁and ▁generate ▁more ▁poll ution ▁in ▁the ▁Ch es ape ake ▁Bay . ▁ ▁It ▁was ▁announced ▁on ▁November ▁ 1 2 , ▁ 2 0 1 9 , ▁that ▁the ▁existing ▁sp ans ▁will ▁be ▁re built ▁and ▁replaced ▁with ▁a ▁new ▁structure ▁expand ing ▁capacity ▁from ▁eight ▁to ▁twelve ▁lan es , ▁and ▁will ▁incorpor ate ▁to ll ▁lan es . ▁ ▁The ▁bridge ▁cross es ▁the ▁western ▁termin us ▁of ▁the ▁Pot om ac ▁Heritage ▁Tra il ▁and ▁the ▁George ▁Washington ▁Memorial ▁Park way ▁on ▁the ▁Virgin ian ▁side ▁of ▁the ▁Pot om ac ▁River . ▁On ▁the ▁Maryland ▁side , ▁the ▁bridge ▁cross es ▁over ▁Mac Ar thur ▁Bou lev ard , ▁the ▁Clara ▁Bart on ▁Park way ▁and ▁the ▁Ch es ape ake ▁and ▁Ohio ▁Canal . ▁Lock ▁ 1 3 ▁( Se ven ▁Lock s ▁ 6 ) ▁of ▁the ▁canal ▁is ▁under ne ath ▁the ▁bridge . ▁ ▁The ▁American ▁Leg ion ▁Memorial ▁Bridge ▁is ▁one ▁of ▁the ▁two ▁locations ▁at ▁which ▁the ▁Capital ▁B elt