SMS 2A - New double track railway Sandbukta-Moss-Såstad

Short description

The new double track railway Sandbukta-Moss-Såstad (SMS) is part of the Intercity development and is one of the sections of the line towards Halden (the Østfold railway's western line).

The project

The double track of SMS is running partly in tunnels and a concrete culvert and partly in open stretches. It includes a new railway station, approx. 200 m south of the current station, with four tracks and a connecting track towards Moss harbor. SMS is 10.3 km long and covers three open stretches and two tunnels. The work comprises:

  • A 630 m substructure for double track railways in open stretch at Sandbukta
  • The Mossetunnel with a length of 2,720 m from Sandbukta to Moss center including a 420 m long cut and cover section
  • The new Moss Station with a length of 800 m
  • The Carlbergtunnel with a length of 2,350 m from Kleberget to Calberg including a 200 m long cut and cover section
  • A 3,850 m substructure for double track railway in open stretch towards the connection of the existing double track at Såstad in Rygge.

 

The contract of SMS 2a, was awarded on June 28, 2019 with a value of 6.340 billion NOK. Construction started in October 2019 and will be completed in May 2025.

Services in detail

Construction period / time    Realization: 06/2019 - 11/2025
Work contract-construction value    NOK 6,340 million, resp. CHF 728 million, resp. EUR 650 million (exchange rate 1 € = 1.1 CHF)
Billing-construction value    n.a. yet
Utilization    Double track railway as part of the Intercity development
Construction method    Drill and blast driven tunnels; retaining structures like sheet pile walls and diaphragm walls for the deep excavation pit, Jet-Grouting, Deep Dry Soil Mixing, concrete culverts in open pits
Main works + characteristics    The turnkey contract of the substructure SMS 2A includes all deliveries and activities, including delivery of all resources, manpower, systems, equipment and materials (permanent and temporary), as well as the execution of all engineering design services, procurements, construction, testing, hand-over and all other assignments that are necessary for a complete delivery.
Summary of work:
•    4,480 m double track above ground
•    2,720 m long double track tunnel Mossetunnelen
•    1 widening section at Mossetunnelen
•    2 access tunnels (rescue tunnels) at Mossetunnelen
•    420 m Cut and Cover at Kransen (Centre of Moss)
•    New railway station in Moss
•    2,350 m long double track tunnel Carlberg
•    2 widening sections at tunnel Carlberg (3 tunnels > 2 tunnels > 1 tunnel)
•    2 access tunnels (emergency tunnels) at Carlberg
•    3 cross passages
•    200 m long Cut and Cover at Carlberg
•    cross section = 83 – 127 m²
Current work status:
•    Mobilization ongoing
•    Supplementary ground investigations
•    Finalizing design service agreements and subcontract soil stabilization
•    Site installation works
•    Ongoing preservation of evidence
•    Works planning (special foundation works)
•    Drill & Blast Tunneling Works ongoing, Ground stabilization ongoing
Geology    Precambrian gneiss of the Ostfold Complex and changing layers of moraine and marine clay
Overburden: minimum 5m / maximum 50m
Client    Bane NOR SF (917 082 308)
Schweigaards gate 33
0191 Oslo, Norway
Planner    Olaf Olsen / NIRAS, Implenia TDO, Acciona Engineering, NGI
Reference person    Contact person : Jarle Rasmussen
mobile: +4791673402
E-mail: raja@banenor.no
Name of the consortium    MossIA ANS
Person responsible from the contractor    Adrianus J. Pas
mobile: M +47 476 58 486
E-mail: Adrianus.pas@implenia.com…
Consortium partner    Implenia (Lead) / Acciona
Function of the contractor within the consortium    Total execution
Participation on the consortium    Implenia 55 %

Challenges

In both tunnels are smaller fault zones. Due to challenging ground conditions Mossetunnel requires a structural strengthening when passing a fault zone consisting of a deep gully with minimal rock coverage.

Mossetunnel is extended with a 420 m long cut and cover section through areas with soft and quick clay. The new station building is constructed perpendicular to the culvert. A new collective hub is established outside the new Mossetunnel, requiring rerouting of existing roads (removed / restored at the end of the project).

The areas of SMS 2A are characterized by difficult ground conditions with quick clay as well as large depths to the rock, both in the city center, in the station area and in the open stretch of Carlberg.

Further information

Key Figures

  • Realization    06/2019 - 11/2025
  • Contract value    NOK 6,340 million
  • CHF 728 million
  • EUR 650 million
  • Total length    10.3 km
  • Concrete:    320,000 m³
  • Total Excavation    630,000 m³
  • Retaining structures    Diaphragm-Wall: 20,000 m²
  • Sheet Pile Wall: 45,000 m² (maximum)
  • Cross section    83 – 127 m²
  • Geology    Gneiss, Moraine and Marine Clay; Soft and Quick Clay

Implenia on site
Implenia Norge AS
Fornebuveien 11
1366 Lysaker,  Norway

Scope of works
Engineering, Procurement and Construction

Performed services
delivery of all resources, manpower, systems, equipment and materials (permanent and temporary), execution of all engineering design services, procurements, construction, commissioning, testing, hand-over

Construction methods
Drill & Blast, Jet-Grouting, Deep Dry Soil Mixing, sheet pile walls and diaphragm walls for the deep excavation pit, concrete culverts in open pits

Project Participants

Client
Bane NOR SF
(Railway Infrastructure Company)

Engineer/Planner
Olaf Olsen / NIRAS, Implenia TDO, Acciona Engineering, NGI

Consortium
JV Implenia (55%, Lead) / Acciona (45%)