The Rhenish Railway Company was along with the Cologne-Minden Railway Company (CME) and the Bergisch-Märkische Railway Company (BME) one of the railway companies that in the mid-19th century built the first railways in the Ruhr and large parts of today's North Rhine-Westphalia.

The Nahe Valley Railway is a two-track, partially electrified main line railway in the German states of Rhineland-Palatinate and Saarland, which runs for almost 100 kilometres along the Nahe. It was built by the Rhine-Nahe Railway Company and connects Bingen am Rhein on the Left Rhine line with Saarbrücken. It was opened between 1858 and 1860 and is one of the oldest railways in Germany. The section south of Bad Kreuznach is part of the regionally important transport corridor between the two major cities of Mainz and Saarbrücken.