Goods trains continued to run until 1967, when the remaining trackage was lifted.

The firm was founded on 3 February 1869 as the Bröl Valley Railway Company (Brölthaler Eisenbahn-Actien-Gesellschaft) or BTE.

On 10 June 1921 it was renamed as the Rhine-Sieg Railway (Rhein-Sieg-Eisenbahn-AG) or RSE.

The 785 mm gauge railway network of the Bröl Valley Railway was, at its peak, a total of 87.3 kilometres long and, towards the end, was mainly worked by goods services.

With the take over of the Heisterbach Valley Railway in 1901 an isolated section of 750 mm gauge line also belonged to the BTE.