Fritz Ehrath survived the war and died on the 20 August 1972 in Neckargemünd.
From the early 1990s until the introduction of the Rhine-Neckar S-Bahn there were services on the Bruchsal–Germersheim–Ludwigshafen–Mannheim–Heidelberg–Neckargemünd–Meckenheim–Sinsheim–Steinsfurt–Eppingen/Heilbronn route, operated with locomotives of class 218 hauling Silberling carriages.
It was finally decided to follow the Neckar valley to Neckargemünd, the Elsenz valley to Meckenheim and the Schwarzenbach valley to close to its source, before tunneling through the ridge and descending to the Neckar and crossing it to Mosbach.
The Heidelberg–Neckargemünd section of the line was built in 1862 as part of the Baden Odenwald Railway (Baden Odenwaldbahn), running from the Heidelberg via Neckargemünd, Meckenheim, Neckarbischofsheim, Aglasterhausen, Obrigheim, Neckarelz, Mosbach, Oberschefflenz, Seckach, Osterburken, Königshofen and Lauda to Würzburg.