Zimmerberg Tunnel
 Tunnel portal (Sihlbrugg end) | |
| Overview | |
|---|---|
| Official name | German: Zimmerbergtunnel |
| Other name(s) | German: Horgerbergtunnel[1] |
| Line | Thalwil–Arth-Goldau railway |
| Location | Zürich, Switzerland |
| Coordinates | 47°15′01″N 8°35′07″E / 47.2503°N 8.5853°E |
| Status | Active |
| System | Swiss Federal Railways (SBB CFF FFS) |
| Crosses | Zimmerberg |
| Start | Horgen Oberdorf |
| End | Sihlbrugg |
| Operation | |
| Constructed | September 1894 – August 1896 |
| Opened | June 1, 1897 |
| Owner | SBB CFF FFS |
| Operator | SBB CFF FFS |
| Traffic | Train |
| Character | Passenger and freight |
| Technical | |
| Length | 1,984 metres (6,509 ft)[note 1] |
| No. of tracks | Single |
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) |
| Electrified | 15 kV/16.7 Hz AC |
| Grade | 13‰[2] |
| Route map | |
 | |
The Zimmerberg Tunnel is a 1,984-metre (6,509 ft)-long[note 1] railway tunnel under the Zimmerberg mountain in the Canton of Zurich, Switzerland which opened in 1897.[3][4]
History
[edit]Construction began in September 1894 from the Horgen portal.[1] Breakthrough was achieved on 15 March 1896, and construction finished in August 1896.[1] The tunnel was opened to traffic on 1 June 1897 along with the rest of the Thalwil–Zug railway line.[5][6][7] On 5 February 1923, electrification of the railway line, including the tunnel, was completed.[7]
Operations
[edit]Together with the Albis Tunnel, the tunnel forms the railway passage through the Zimmerberg and Albis on the Thalwil–Arth-Goldau railway line which is an important feeder to the Gotthard railway.[5]
The segment leading through the two tunnels constitutes a single-track section on the Thalwil–Arth-Goldau railway.[3][7][8] The proposed phase II of the Zimmerberg Base Tunnel aims to resolve the bottleneck formed by the single-track sections and to allow for faster traffic on the Thalwil–Arth-Goldau railway.[9]
Notes
[edit]- ^ a b The length given for this tunnel varies by source between 1,984 metres (6,509 ft) and 1,986 metres (6,516 ft). This article uses the length given by SBB CFF FFS.[3]
References
[edit]- ^ a b c Züblin (1898-07-16). "Mitteilungen über den Bau der Linien Schaffhausen-Eglisau und Thalweil-Zug". Schweizerische Bauzeitung (in German). Vol. 32, no. 3. pp. 22–24. doi:10.5169/seals-20781.
- ^ Schweers, Hans (2012). Eisenbahnatlas Schweiz (in German) (2nd ed.). Cologne: Schweers + Wall. pp. 12–13. ISBN 9783894941307.
- ^ a b c "Tunnels". data.sbb.ch. SBB Infrastruktur. 2017-12-01. Retrieved 2024-10-25.
- ^ "Map viewer". map.geo.admin.ch. Coordinating Agency for Federal Geographic Information (GCG). Retrieved 2024-10-20.
- ^ a b Bruch, Hans (2022-10-10). "Bahnhof Oberdorf". Horgner Jahrheft 2022 - Das Oberdorf im Umbruch (PDF) (Report) (in German). Gemeinde Horgen in Verbindung mit Pro Horgen. pp. 16–25. Retrieved 2024-10-20.
- ^ "Die Eröffnung der Eisenbahn Thalweil-Zug". Neue Zürcher Zeitung (in German). No. 3. 1897-06-01. p. 1. Retrieved 2024-10-21.
- ^ a b c Wägli, Hans G.; Jacobi, Sébastien (2010). Schienennetz Schweiz / Réseau ferré suisse (in German and French) (3rd ed.). Zurich: AS-Verlag. pp. 23, 67, 177. ISBN 9783909111749.
- ^ Geschäftsbericht 1983 (Report) (in German). Schweizerische Bundesbahnen. 1984-05-28. p. 26. Retrieved 2024-10-21.
- ^ "Zimmerberg-Basistunnel 2" (in German). Schweizerische Bundesbahnen SBB. Retrieved 2024-10-20.