Back Земерынг (тунэль) BE Semmerinský úpatní tunel Czech Semmering-Basistunnel German Semmeringin pohjatunneli Finnish Semmering-bázisalagút Hungarian Galleria di base del Semmering Italian ゼメリングベーストンネル Japanese 제머링 베이스 터널 Korean Semmeringbasistunnel Dutch Земмерінзький базисний тунель Ukrainian
 Open day at western portal in Mürzzuschlag, October 2023 | |
| Overview | |
|---|---|
| Official name | German: Semmering-Basistunnel |
| Location | Austria (Lower Austria, Styria) |
| Coordinates |
|
| Status | under construction |
| Start | Mürzzuschlag, Styria |
| End | Gloggnitz, Lower Austria |
| Operation | |
| Work begun | 25 April 2012 |
| Opens | 2030 |
| Operator | ÖBB-Infrastruktur AG |
| Technical | |
| Length | 27.3 km (17.0 mi) |
| No. of tracks | 2 single-track tubes |
| Track gauge | 1,435 mm (4 ft 8+1⁄2 in) (standard gauge) |
| Electrified | 15 kV 16.7 Hz AC overhead conductor rail |
| Operating speed | 230 km/h (145 mph) |
| Width | 10 metres (33 ft) |
| Grade | 0.84% (maximum) |
| Cross passages | 56 |
| Route map | |
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The Semmering Base Tunnel is a railway tunnel under construction between Gloggnitz and Mürzzuschlag in Austria underneath the Semmering Pass.[1] The existing route is 41 km long and the Semmering Base Tunnel will be 27.3 km long. The new route will offer time savings of up to 30 minutes, with a shorter route and higher speed limit (maximum 230 km/h).[2]
Construction began on 25 April 2012 and the link is expected to enter operational service in 2030,[3] delayed from the original estimate of 2026.[4] The main benefit of the new tunnel will be increased ease of use for freight traffic. The gradients of the traditional routes requires the use of two locomotives; the reduced gradient of the new link will enable the transit of freight traffic using just one locomotive. The SBT and the Koralm Railway in combination will enable freight transit across the whole southern line with just one locomotive.
Currently, the fastest Vienna-Graz and Vienna-Klagenfurt journeys on the Railjet services are 2 hours 35 minutes and 3 hours 55 minutes, respectively. The Koralmbahn will enable Graz-Klagenfurt journeys of approximately 45 minutes, as such it will bring Vienna-Klagenfurt journeys down to around 3 hours 25 minutes starting end of 2025. The SBT is projected to enable time savings of additional 45 minutes, which will enable journeys from Vienna to Graz and Klagenfurt of 1 hour 50 minutes and 2 hours 40 minutes, respectively.[5]
- ^ "Semmering Base Tunnel Factsheet" (PDF). Austrian Federal Railways. August 2008.
- ^ "Semmering Base Tunnel - The Project of the Century" (PDF). ÖBB-Infrastruktur AG. Archived from the original (PDF) on 22 December 2024.
Future rail traffic can travel through the mountain at a top speed of 230 km/h as a result of the tunnel being built.
- ^ "Further delay to Semmering Base Tunnel". International Railway Journal. 2022-04-26. Retrieved 2022-04-27.
- ^ Aglas, Elisabeth (2018-03-07). "ÖBB / Hochleistungsfähige Infrastruktur als Basis für Mobilität | Redaktion Österreichisches Pressebüro". Redaktion Österreichisches Pressebüro (in German). Retrieved 2024-12-22.
Der Semmering-Basistunnel wird ab 2026 die Strecke weiter entlasten und ergänzen.
[The Semmering Base Tunnel will further relieve and supplement the route from 2026.] - ^ OEBB Press: Semmering-Basistunnel in der Steiermark fertig gegraben (in German) 8 September 2023, Retrieved 12 September 2023.