Milchbucktunnel

The Milchbucktunnel is a 1820 meter long road tunnel in Zurich and part of the motorway feeder A1L the A1 motorway.

The traffic passed in 1985 building is located between terminals Zurich - Latvians and Zurich - Unterstrass and consists of a tunnel with one lane towards the city center and two lanes out of town. In the northbound carriageway of the Schöneichtunnel follows.

As the Sihlhochstrasse he is a realized part of the controversial Express Zurich streets -Y, which was first proposed in 1955 in two expert reports to link the A1 and A3 in the middle of the city of Zurich the Latvians, but was still under construction.

Traffic

The tunnel was originally to be carried out with two tubes, which was rejected by a referendum in the city of Zurich, so that only the construction of the eastern tube came for execution. It ends at the Wasserwerkstrasse in Zurich downtown at the Upper Letten. There he was to link over the River Limmat in the bathhouse with a traffic triangle, the three national highways. Another plan envisaged underground to lead him to join in Sihltal the A1 and the A3. Every day some 50,000 vehicles traveled the tunnel.

Construction

The Milchbucktunnel has an average gradient of 2.7 % from north to south and connects the smooth with the Limmat valley. It crosses the ridge Milchbuck, a fully überbautes area of the city of Zurich. Here in the south, a moraine is crossed. The tunnel section was prepared in 250 meters in length with a preliminary section. In the following 330 meters a full outbreak came with the freezing method used, while the Stampfenbachstrasse were crossed with a minimum cover of 6.5 meters and residential and commercial buildings in the Beckenhofstrasse 5.5 meters. The subsequent 960 -meter course in the molasse was run through with a roadheader in partial onset, finally followed nor the 280 -meter precut North. The excavated cross -section of the 1310 -meter-long tunnel section was created by mining approximately 145 square feet. Overall, the pre-cuts are including accrued 620,000 cubic meters of excavated material.

In the years 2003 and 2006 were held extensive repair measures on the building. In May 2011, work on a 1300 meter long tunnel started in security. The tunnel will be finished in 2014 and cost 31 million francs. During the construction project, only two of usually three lanes are available.