Border Crossings: Austria - Switzerland
Note: Despite a common electrification system, different designs of overhead line and pantographs prevents through working by electric trains without special arrangements.
Until 2006, the Internationale Rheinregulierung (IRR) operated a works railway (43 km long, 750 mm gauge, electrified at 750V dc overhead) for construction and maintetance purposes for the River Rhein as it enters the Bodensee (Lake Constance). The association Verein Rhein-Schauen operates passenger trains over this railway, partially with steam engines. The principal section is that on the east side between Werkhof Lustenau and the lake, but specials may operate on the rest of the remaining network - see plan. There were three border crossings (but now only one), listed below
Mäder IRR - Kriessern IRR
[E] on a railway bridge over the Rhine for the Kadelberg quarry at Koblach. No longer in use, the track south of Zollamt Kriessern (near Mäder) having been lifted in 2012.
Lustenau Wiesenrain IRR - Widnau IRR
[E] on a combined road/railway steel bridge over the Rhein. Still in use in 2018.
(Bregenz -) Lustenau Markt ÖBB - St Margarethen SBB
[E] ÖBB works local trains to St Margrethen. SBB works international trains to/from Lindau, using SBB Cargo Re 421 locomotives. These are 421 371 to 421 397 (formerly 11371 to 11397) all of which have a DB/ÖBB pantograph and the necessary safety systems.
Höchst Bruggerloch IRR - St.Margrethen IRR
[E] along the left-bank (i.e. west side) Rhein flood embankment (leading to the end of the embankment in Lake Constance). No longer in use.