Uetliberg tunnel
Uetliberg tunnel | ||
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Northern tube of the Uetliberg tunnel (towards Basel)
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use | Motorway tunnel | |
traffic connection | A4 | |
place | Uetliberg | |
length | 4420 m | |
vehicles per day | 59,708 | |
Number of tubes | 2 | |
cross-section | 143-160 | |
Largest coverage | 320 m | |
construction | ||
Client | Federal Roads Office | |
building-costs | 4 billion CHF | |
start of building | October 2000 | |
completion | 2007 | |
business | ||
release | May 4, 2009 | |
location | ||
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Coordinates | ||
Tub bottom | 677251 / 244243 | |
Gäniloo | 681335 / 244264 |
The Uetliberg tunnel is a section of the A3 motorway south of Zurich in Switzerland and has been connecting the Zurich-West motorway junctions near Birmensdorf and Zurich-South in Wollishofen in a direct line since May 4, 2009 . The two tubes cross the Uetliberg , Zurich's local mountain . The tunnel is intended above all the previous Westtangente and the Birmensdorferstrasse from heavy through traffic relief and closes an important gap in the Swiss road network.
Construction
During the construction of the Uetliberg Tunnel, various excavation methods were used to drill through the highly differentiating rock, such as traditional blasting , but also driving using a tunnel boring machine (TBM), a tunnel boring widening machine (TBE) using undercut technology, dome jacking and in the Reppischtal area in opencast mining. The excavated volume was 1.7 million m³.
execution
The tunnel consists of two separate tubes in an east-west direction. Each tube has two lanes and a hard shoulder. Cross connections every 300 m serve as escape routes into the other tube, which is why there was no need for a safety tunnel. In addition to the usual carriageway crossings at the tunnel portals, the two tubes are connected to each other in both directions by means of a transfer tunnel under the Reppischtal ventilation center so that traffic can be directed into the other tube in the event of a fire or construction site. The tubes have a gradient of 1.6% towards the east.
Accompanying traffic measures
For the opening of the Uetliberg tunnel, the city of Zurich implemented a number of accompanying measures, which were primarily intended to effectively relieve Zurich city districts 3 and 4 of through traffic. By the summer of 2010, for example, Sihlfeldstrasse and Weststrasse had been converted back into neighborhood streets by means of structural measures, thereby relieving 90% of traffic.
Web links
Individual evidence
- ↑ 2011 annual evaluation of measuring point no. 577 Uetlibergtunnel Mitte (motorway) . Federal Roads Office , April 10, 2012, archived from the original on March 12, 2016 ; Retrieved December 23, 2012 .
- ↑ Characteristics. In: Uetlibergtunnel.ch. Amberg Engineering, accessed December 22, 2015 .