The station buildings at Bonn-Duisdorf, Kottenforst, Meckenheim (Bz Köln), Rheinbach, Odendorf and Kuchenheim (spelt Cuchenheim until 1936) were built at this time.

The other buildings stations between Duisdorf and Kottenforst were based on designs by Johannes Richter (1842–1889) and built from clinker brick.

In 1979, the service was temporarily intensified significantly to provide trains every half-hour during the daytime on week days and hourly on weekends.

Bonn Hbf (West Rhine Railway) – Duisdorf – (Meckenheim-)Kottenforst – Meckenheim – Rheinbach – Odendorf – Cuchenheim – Euskirchen (Eifel Railway) Bonn Hbf – Duisdorf – Impekoven (Witterschlick) [km 7.9] – Kottenforst – Meckenheim – Rheinbach – Odendorf – Cuchenheim – Euskirchen Bonn Hbf – Duisdorf – Impekoven (Witterschlick) – Kottenforst – Meckenheim – Rheinbach – Odendorf – Cuchenheim – Euskirchen;other trains ran partly over the Börde Railway to Düren Bonn Hbf – Bonn-Duisdorf – Impekoven [km 7.9] – Witterschlick [km 9.8] – Kottenforst – Meckenheim – Rheinbach – Odendorf – Cuchenheim – Euskirchen;other trains ran partly over the Börde Railway to Düren Bonn Hbf = Bonn-Duisdorf = Impekoven = Witterschlick = Kottenforst = Meckenheim = Rheinbach = Odendorf = Cuchenheim = Euskirchen;other trains ran partly over the Börde Railway to Düren Bonn Hbf = Bonn-Duisdorf – (Alfter-)Witterschlick – (Meckenheim-)Kottenforst = Meckenheim = Rheinbach – (Swisttal-)Odendorf – (Euskirchen-)Kuchenheim = Euskirchen;other trains ran partly over the Börde Railway to Düren and continued to Aachen[3] Bonn Hbf = Bonn-Duisdorf – (Alfter-)Witterschlick – (Meckenheim-)Kottenforst (only Sat/Sun) = Meckenheim (Bz Köln)-Industriepark = Meckenheim = Rheinbach – (Swisttal-)Odendorf – (Euskirchen-)Kuchenheim = Euskirchen;some trains continue over the Erft Valley Railway to Bad Münstereifel.

Continuation from Bonn via Remagen and the Ahr Valley Railway to Ahrbrück is considered.

Since June 1998, the line has been operated by DB Regio NRW with newly acquired Talent (class 644) diesel multiple units.

For operational reasons, the line will be realigned in the area of Bonn freight yard, a turnback track will be built in Rheinbach and the control and signalling technology will be upgraded on the whole section.

[6][7] Work has been delayed according to Deutsche Bahn because of proceedings before the Higher Administrative Court (Oberverwaltungsgericht), lack of financial commitments by the state, ongoing construction work on bridges and underpasses as well as planning and technical difficulties in providing alternative routes.