Technical specifications

Scope of work

  • single-track railway tunnel with a widened section allowing the railway line to be split into 2 tracks
  • 14 trough blocks
  • 13 tunnel blocks
  • total length 353 m.

Construction method:

  • open cut method
  • section-by-section construction in 29 construction phases
  • crossing of 9 railway tracks while maintaining railway operations, with auxiliary bridges being installed in the tracks for this purpose
  •  Construction sequence of the tunnel blocks: base slab, concreting of the roof slab on a supporting structure 2.5m beneath its desired final position under the auxiliary bridges, lifting of the roof slabs into the desired final position using 6 jacks, concreting of the walls using a pump.

Geology:

  • sand, gravel

General data

Project
Neu-Isenburg Junction

Client
RTW Planungsgesellschaft mbH

Contractor
Wayss & Freytag Ingenieurbau AG

Construction period
09/2022 – 09/2026

Net construction costs
€ 30 million

 

 

Utilisation
Infrastructure
Type
Railway tunnel for regional rail transport
Length
353 m
Construction Method
open cut method
Related Projects

Related Projects

Georgsberg Tunnel,
Georgsberg Tunnel,
Germany

Foot and cycle path tunnel, length 114.77 m, max. clear width 6.45 m, clear height approx. 4.22 m.

Read more
Tunnel Vötting
Tunnel Vötting
Germany

95 m preliminary cut, preliminary cut approx. 35,000 m³ 30 m north portal structure 462 m tunnel constructed by the mining method: Top heading and bench/invert heading in Tertiary hilly terrain

Read more
LSG Tunnel at Frankfurt Airport
LSG Tunnel at Frankfurt Airport
Germany

1 two-lane road tunnel and 1 bridge, total tunnel length 100 m, length of the total section to be built by us under the contract: approx. 520 m

Read more