▁the ▁C & PD . ▁ ▁Success or ▁lines : ▁Late ▁ 2 0 th ▁century ▁to ▁present ▁ ▁The ▁P W & B ▁was ▁merged ▁into ▁the ▁Philadelphia , ▁Baltimore ▁and ▁Washington ▁Rail road ▁( P B & W ) ▁in ▁ 1 9 0 2 , ▁and ▁the ▁C & PD ▁was ▁merged ▁into ▁the ▁P B & W ▁in ▁ 1 9 1 6 . ▁The ▁PR R , ▁which ▁controlled ▁all ▁of ▁these ▁companies , ▁l abeled ▁the ▁line ▁as ▁the ▁Port ▁Road ▁Branch ▁and ▁elect r ified ▁the ▁branch ▁in ▁ 1 9 3 8 . ▁( The ▁Port ▁Road ▁branch ▁design ation ▁continues ▁on ▁the ▁line ▁north ▁of ▁Columbia , ▁to ▁Mary sv ille , ▁along ▁the ▁En ola ▁Branch .) ▁ ▁The ▁PR R ▁merged ▁into ▁P enn ▁Central ▁in ▁ 1 9 6 8 , ▁and ▁after ▁the ▁P enn ▁Central ▁bank rupt cy ▁in ▁ 1 9 7 0 , ▁ownership ▁of ▁the ▁line ▁went ▁to ▁Con ra il . ▁Con ra il ▁removed ▁elect r ification ▁equipment ▁on ▁the ▁branch ▁in ▁ 1 9 8 1 . ▁There ▁are ▁many ▁rem n ants ▁of ▁the ▁elect r ification ▁along ▁much ▁of ▁the ▁line . ▁ ▁As ▁part ▁of ▁the ▁Con ra il ▁break - up ▁in ▁ 1 9 9 9 , ▁the ▁Port ▁Road ▁Branch ▁was ▁sold ▁to ▁Nor folk ▁Southern . ▁ ▁Sch eduled ▁passenger ▁service ▁over ▁the ▁Port ▁Road ▁ended ▁on ▁October ▁ 2 9 , ▁ 1 9 7