Road Tunnel Uetlibergtunnel Zurich, Switzerland

Juchegg Soft Ground Section

Object National highway tunnel, new construction

Construction Costs Total costs Uetliberg tunnel: CHF 1‘120 million

Project Schedule Planning: since 1981 Construction duration: October 2001 - August 2004

Project Description Pipe screen 2-tube tunnel: each tube with 2 traffic lanes and one shoulder. Length Juchegg SGS: approx. 410 m Diameter: 12.70-14.70 m 15.00 15.00 Cross section: approx. 148 m2

50 Slope: 1.6 % (upward) 50

7.41

Driving Method 7.41

7.41 8.26 Driven upward by core boring with steel installation

441.12

85

85 440.27 and pipe screen system. 85

(Achse Bohrpfahl) 45 Geology A base moraine composed initially of sandy-gravels 1.00 1.00 1.00 1.00 1.00 45 55 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 45 55 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 1.00 45 12.00 12.00 12.00 and then of clay-sands. Above it lies the Uetliberg 3. Etappe 2. Etappe 1. Etappe loam. Pipe screen system and steel installation to cross the Construction Details Uetliberg loam • The excavation support consists of steel segments and 25 cm steel-fibre reinforced shotcrete layers Birmensdorf Zürich • In the first 70 m of tunnel heading, a pipe screen system will be installed to cross the Uetliberg Sihl loam N4 .1 .5 Uetliberg Tunnel

• Waterproofing with plastic membrane Reppisch A4 Bern • Cast concrete final lining Basel Junction Zürich-South Our Services Junction Wettswil Zürich-West am Albis • Complete detail and construction design,

tender documents of the underground works Chur Luzern A4 A3 Austria • Partial design of the cut-and-cover sections Italy Italy • On-site construction management for underground construction Site plan • Support project management of client For further information: Client Tiefbauamt des Kantons Zürich, Mr. O. Schnelli www.uetlibergtunnel.ch

Amberg Engineering AG Niederlassungen in: Trockenloostrasse 21 Sargans CH-8105 Regensdorf Chur Telefon +41 1 870 91 11 Brünn, CS Telefax +41 1 870 06 20 Singapur, SG [email protected] Madrid, ES www.amberg.ch