Last summer, Deutsche Bahn handed over the documents for the preliminary planning of the Daglfing-Johanneskirchen railway line to the city and the Federal Railway Authority. This is to be expanded to four tracks so that passenger and freight traffic no longer have to share the tracks. This would then also allow a faster connection to the airport via S-Bahn. The city has had the documents checked, the result will soon be discussed in the Bogenhausen district committee and later in the city council.
The documents contain a comparison of the above-ground expansion favored by the DB and a tunnel, which the city insists on. The planning department is now reaffirming this attitude, for various reasons.
From a water management perspective, ground-level expansion is preferable, according to the proposal. When building a tunnel, the groundwater could build up, which could only be prevented with great effort. However, according to the planning department, the urban planning, traffic and urban climatic advantages of a tunnel “far outweigh”. This is the only way to ensure sustainable urban development.
According to current plans, the above-ground railway line would be 28 to 33 meters wide and would require noise barriers up to six meters high. However, these walls would prevent the existing city districts from growing together with the planned new building districts and would hinder the flow of fresh air, which would harm the city’s climate. Instead, an eight-hectare park could be built on the cover of the tunnel, which would have a positive impact on the climate.
The administration sees another disadvantage of the above-ground route in the railway overpasses that would have to be built – namely for the northern pedestrian and cycle path in Johanneskirchen, Johanneskirchner Straße, Stegmühlstraße and Brodersenstraße, the Daglfing Nord cycle path, and the underpass at Daglfing train station , Daglfinger Straße and a Daglfing Süd footpath and cycle path. In addition, Zamila Park borders directly on the railway line to the west. Because the park is partly located on railway land, these would have to be replanned.
As far as costs are concerned, the DB had previously estimated the tunnel at 2.4 billion euros and the above-ground route at 900 million euros. However, the current template mentions lower amounts: almost 1.8 billion euros for the tunnel, 741 million euros for the ground-level expansion. However, no risk premium is taken into account in these costs.
Because the federal government would currently only pay for the above-ground route, Mayor Dieter Reiter (SPD), if the city council decides to do so, should negotiate with the federal and state transport ministries in order to achieve a “fair cost distribution” between the federal government and the Free State for the construction of a tunnel. country and city.
Then there would still be the construction time: the above-ground version would take the railway about six years, and the tunnel would take an impressive 13.5 years.