▁April ▁ 1 9 4 5 ▁all ▁railway ▁and ▁road ▁brid ges ▁over ▁the ▁Ne ck ar ▁and ▁the ▁Ne ck ar ▁canal ▁were ▁destroyed ▁by ▁retre ating ▁German ▁troops . ▁In ▁addition , ▁on ▁ 2 0 ▁April ▁ 1 9 4 5 ▁German ▁troops ▁ble w ▁up ▁the ▁bridge ▁over ▁the ▁Reichs aut ob ahn ▁( now ▁the ▁A ▁ 8 1 ▁aut ob ahn ). ▁The ▁Ne ck ar ▁Vi ad uct ▁at ▁Mar bach ▁was ▁rep a ired ▁and ▁re open ed ▁in ▁ 1 9 4 7 . ▁Deutsche ▁Bundes bahn ▁occasionally ▁considered ▁the ▁reconst ruction ▁of ▁the ▁Frei berg – B iet ig heim ▁line , ▁but ▁decided ▁against ▁it ▁because ▁of ▁low ▁traffic ▁forec asts , ▁caused ▁particularly ▁by ▁the ▁shift ▁of ▁the ▁primary ▁traffic ▁flow ▁from ▁east – west ▁to ▁north – s outh . ▁After ▁the ▁route ▁had ▁previously ▁been ▁partially ▁dis m ant led , ▁it ▁was ▁formally ▁closed ▁on ▁ 1 5 ▁January ▁ 1 9 5 8 . ▁ ▁The ▁formation ▁of ▁the ▁town ▁of ▁Frei berg ▁am ▁Ne ck ar ▁from ▁the ▁communities ▁of ▁Bei hing en , ▁He ut ings heim ▁and ▁Ge is ingen ▁led ▁to ▁Bei hing en - He ut ings heim ▁station ▁being ▁renamed ▁Frei berg ▁( Ne ck ar ) ▁on ▁ 1 ▁June ▁ 1 9 7 5 . ▁ ▁Elect r ification ▁and ▁integration ▁into ▁the ▁S - B ahn ▁network ▁ ▁Two ▁years ▁after ▁operations ▁comm enced ▁on ▁Stuttgart ▁S -