📋 Tender Overview
Remove lock from July 12, 2025 to 01.09.2025
Rail replacement between Innsbruck Hbf and Mittenwald Bahnhof
50 renovation measures along the route - new construction second section Inntalviaduct
OT by press spokesman Christoph Gasser-Mair in the download area
(Innsbruck, 7.7. 2025) - as impressive as it is also impressive railway lines in the mountains, their maintenance is complex and challenging. This applies especially to the Mittenwaldbahn, which is also called Karwendelbahn in Tyrol. Due to extensive renovation work, the route from Saturday, July 12th 2025, 00:50 to Monday, September 1st. 2025, 03:50 am is closed. During this time, rail replacement buses run between the Innsbruck Central Station and the Mittenwald train station. A minibus also runs between the junction to Hochzirl and Hochzirl station. The bicycle is only possible to a limited extent on selected connections with a bicycle trailer. Innsbruck Hauptbahnhof, Seefeld and Mittenwald Bahnhof are stops for the bike transport. The OBB ask for your understanding and recommend that you find out about the desired connection online before starting your journey.
Eight new arches for the Inntalviaduct
In the approximately seven -week lock, around 50 different construction measures are implemented along the entire route. The rail connection can then be used again in full quality. The most important part is the new construction of eight other arches of the so -called Inntalviaduct at the WiFi in Innsbruck. After over 110 years, OBB rebuilt the historical building in coordination with the monument protection. As in 2022, eight new arches were prefabricated next to the existing route. During the lock, the old arches are removed and the approximately 2000 -ton new component with strong, hydraulic presses are pushed to its final place.
Construction sites over 30 kilometers
The Inn Valley Viaduct is the largest, but not the only measure that the OBB implement. Rather, the entire mountain route becomes the construction site. Logistics is a special challenge: the route has climbing up to 38 per thousand, tight corners and is difficult to reach with road vehicles. After demolishing the old viaduct arches at the WiFi in Innsbruck from the end of July, the access to access by train is also interrupted. Therefore, building materials, machines and devices have to be brought to their scene with over 250 train journeys. After that, up to 100 people work at the same time under time pressure on various projects. The weather also plays a crucial role in high alpine construction sites.
Temporary lock of level crossings
The OBB also renew several railway crossings during the route. In these areas, all road users have to count on detours. In Innsbruck, the transitions Speckweg, Karl-Innerbner-Strasse and St.-Georgs-Weg are affected. The OBB ask to avoid Tschiggreystrasse or the Hottingen driveway.
There are further restrictions:
- Kreuzweg in Reith near Seefeld,
- Munchner Strasse (changing restrictions)
- Reitherspitzstrasse (12th to July 31, 2025.) in Seefeld,
- intersection near the OBB stop Giessenbach (July 12th to August 5th) and the
- Railway crossings Oberdorf, Field path and settlement in Scharnitz
The OBB ask to observe the signage and instructions from the security personnel.
The most important measures at a glance:
Renewal of the platforms in the Leihthen and Giessenbach stops
Use of large -scale construction machines such as the rail conversion train and gravel bed cleaning machine
Reduction of 8,960 meters track:
12,400 tons of track gravel
11,640 meters rails
14,960 pieces threshold
Renewal of the tracks on five railway crossings
Reduction of switches with underground renovation in the Martinwand area.
Installation of a network against murs on the Martinwand
Renewal of the drainage in the area of the degeneration of 2024 (around 200 meters)
Establishment of rockfall fence between the Martinswand and Hochzirl
Rock clearance and wooden lovers along the entire route
Liefer renovations in the Leihthen and Giessenbach stops
Renewal of the technology station in Scharnitz
New backup system at the railway crossing at km 31.507 in Scharnitz.
Refurbishment of six tunnels on the route
