Auerberg tunnel

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Auerberg tunnel
use Road tunnel
traffic connection Bundesstrasse 2
place Oberau
length 1903 m
Number of tubes 2
construction
Client Federal Republic of Germany
building-costs > 100 million euros
start of building in planning
planner Motorway Directorate South Bavaria
location
Auerberg Tunnel (Bavaria)
Red pog.svg
Red pog.svg
Coordinates
North portal 47 ° 34 ′ 52 "  N , 11 ° 10 ′ 5"  E
South portal 47 ° 34 ′ 13 ″  N , 11 ° 8 ′ 48 ″  E

The Auerberg tunnel is a road tunnel that is intended to complete the four-lane expansion of the section of federal highway 2 (B 2) between the end of federal motorway 95 (A 95) near Eschenlohe and the northern entrance to Garmisch-Partenkirchen .

Problem situation

Since the A 95 to Eschenlohe was completed in 1982, the adjoining section of the B 2 to the south has been a bottleneck in terms of traffic technology. The average traffic volume on the federal highway 2 in the Oberau area is 26,000 vehicles per day. The peak loads on the weekends are significantly higher, up to 45,000 vehicles per day. So far, this has led to frequent and long traffic jams, especially on skier weekends and during vacation travel times.

planning

The realization of the Auerberg tunnel is mainly demanded by the citizens' initiative to relieve traffic in Oberau . The section between the end of the motorway and the planned Oberau-Nord junction is 3.4 km long. It is planned to expand federal highway 2 from the end of the motorway to four lanes over a length of around 1.5 km on the current route.

Due to the cramped conditions (railway line and course of the Loisach on one side, Auerberg on the other), the route will then be guided in a two-tube tunnel for the remaining 1.9 kilometers.

The planning approval procedure for the Auerberg tunnel was initiated by the government of Upper Bavaria in April 2011. With the Auerberg tunnel , together with the four-lane Oberau tunnel that is currently under construction and the existing four-lane Farchant bypass ( Farchant Tunnel ), the federal motorway 95 is actually to be extended to the local border of Garmisch-Partenkirchen, in the form of a motorized road (B 2 new) . The relief of the through traffic of the districts Garmisch and Partenkirchen is to be realized by two further tunnels ( Kramer tunnel = B 23 new for Garmisch and Wanktunnel = B 2 new for Partenkirchen).

Various variants were examined in advance, including a completely above-ground route along the 3.4 km long route with a bridge crossing the Loisach in the southern half and an enclosure (gallery construction) in the northern section.

Four different variants were examined as part of the plan approval procedure:

  • 1.9 km single-tube tunnel, route near the previous B 2 along the Loisach
  • 1.9 km two-tube tunnel, route close to the previous B 2 along the Loisach
  • 3.2 km two-tube tunnel, route near the previous B 2 along the Loisach
  • 2.2 km two-tube tunnel, route through the Katzental, around 800 meters northwest of the previous B 2

The comparison of the variants showed that a two-tube tunnel with a length of 1903 meters (direction Garmisch) or 1850 meters (direction Munich) is the most suitable solution. In the planning approval procedure, the original project from 2011 was supplemented by a semi-connection point at Gut Weghaus. This replaces the once planned relocation of the B 2 near Eschenlohe. This means that traffic on Bundesstraße 2 from the direction of Murnau can in future be diverted directly to Autobahn 95 without having to pass Eschenlohe. The semi-junction makes the two ailing B 2 tunnels superfluous ( Olympia Tunnel Eschenlohe ). These tunnels with a length of 222 and 255 meters were built for the 1936 Winter Olympics and were used as a secret aircraft production facility during World War II.

Current status

Since there are no more Olympic Winter Games in prospect ( Munich's application for it did not come off), the Auerberg tunnel fell behind in the first few years after 2010. This changed in 2017 due to statements made by the then Federal Minister of Transport, Alexander Dobrindt .

According to the Autobahn Directorate South Bavaria, the start of the tunnel construction work can now be expected after the completion of the Oberau tunnel , i.e. from 2021. After the completion of the Oberau tunnel , the relevant section of the B 2 is likely to become a bottleneck critical to congestion because then north ( Autobahn A 95) and to the south of it the route will have four lanes and no intersections, but that B 2 section has so far only had two lanes.

The planning approval decision for the 3.4-kilometer stretch was issued on August 19, 2019. The Federal Nature Conservation Association has spoken out against the project. In particular, this bothers the four-lane expansion of the section. The cost of building the Auerberg tunnel is estimated at well over 100 million euros.

See also

Web links

Individual evidence

  1. ^ Groundbreaking ceremony for the Oberau bypass ( memento from October 25, 2015 in the Internet Archive ); in: Bayerischer Rundfunk from September 1, 2015
  2. ↑ a b Half a billion for the tunnel trio ; in: Süddeutsche Zeitung Online from July 31, 2014
  3. ↑ B2 remains with the federal government or the Free State: This decision saves Oberau and Eschenlohe millions ; in Münchner Merkur on February 8, 2018
  4. ↑ Bundesstraße B 2, new building / expansion between Eschenlohe and Oberau-Süd ; in: Autobahn Directorate South Bavaria, March 2010
  5. ↑ General layout plan B2 new ; in: Autobahndirektion Südbayern, July 2018
  6. ↑ Auerberg tunnel: approval procedure initiated ; in: Merkur Online from April 27, 2011
  7. ↑ The federal road is to become four lanes ; in: Merkur Online from September 22, 2009
  8. ↑ Explanatory report B2 new Eschenlohe - Garmisch-Partenkirchen ; Motorway Directorate South Bavaria
  9. ↑ a b Bund Naturschutz rejects Auerberg tunnel project ; in: Münchner Merkur from September 18, 2017
  10. ↑ Eschenloh forced laborers from yore returns ; in: Münchner Merkur from July 11, 2017
  11. ↑ Suddenly good chances for Auerberg tunnel ; in: Münchner Merkur from April 27, 2017
  12. ↑ Plan approval decision B 2 new Eschenlohe – Garmisch-Partenkirchen - new construction of the B 2 Eschenlohe to Oberau-Nord with Auerberg tunnel - construction km 1 + 990 to construction km 5 + 740 with new construction of the semi-connection point at Gut Weghaus. Government of Upper Bavaria, August 19, 2019, accessed on November 6, 2019 .