2 single-track railway tunnels
2 cut and cover tunnel sections
Railway sections in a cutting and on an embankment
Construction of sonic boom structures at all 4 tunnel portals in order to avoid the sonic boom effect
Construction method
Geology
Project
Finne Tunnel
Part of new Erfurt-Leipzig-Halle railway line
Single-track railway tunnel
Client
DB Netz AG [German rail company]
represented by DB Projekt Bau GmbH
Projektzentrum Leipzig
Contractor
Wayss & Freytag Ingenieurbau AG
as technical leader of a joint leader
Construction period
December 2006 to September 2012
Construction costs
€ 270 million
2.5 km long underground railway line in a double-tube underground track system for the North-East-Line (NEL) in Singapore with two stations, two underground passages and a flyover.
Length: approx. 7,400 m 2 drives: West 3,230 m and East 3,8700 m in length Internal diameter: 3.60 m External diameter: 4,50 m bore diameter approx. 4.80 m