Another line opened on 2 April 1910 branched off from Griedel through the Wetter valley to Bad Nauheim Nord.

The last section from Butzbach Ost to Oberkleen, then in the Prussian district of Wetzlar, was completed on 1 June 1910.

Since the cessation of passenger service on the BLE, Butzbach station is no longer a railway junction.

Regionalbahn services run from Friedberg via Bad Nauheim, Butzbach, Langgöns and Großen-Linden to Gießen.

During the peak hours Butzbach is served by individual Regional-Express services that run from Frankfurt via Giessen to Marburg.