What Aarsleff Rail does

Aarsleff Rail is a Scandinavian railway infrastructure contractor that designs, plans, and executes construction, maintenance, and facility management services for rail networks across Denmark, Sweden, and Norway. The company operates as a single integrated organization with headquarters in Viby (Denmark), regional headquarters in Trondheim (Norway) and Malmö (Sweden), and additional offices in Glostrup, Fredericia, Gothenburg, Norrköping, and Stockholm. Its service portfolio spans the full railway value chain: mechanical and manual track renewal (including welding, tamping, and rail destressing), catenary/traction current systems across multiple voltage standards (750V light rail through 25kV mainline), railway signaling and interlocking, bridge and station construction, light rail systems, underground infrastructure, certified railway safety management, and facility management. Notable technical capabilities include ISO 3834-2 welding certification held since 2010, EU Safety Certificate for operating own traction units, and the Huddig 1370T hybrid machine deployed in 2025 for low-emission overhead-line installation.

The business model is built on competitive public procurement. Aarsleff Rail generates revenue through large-scale project contracts awarded by government railway infrastructure owners (Banedanmark, Bane NOR, Trafikverket, DSB, and municipal/regional authorities), supplemented by recurring framework agreements for operations, maintenance, and station facility management (e.g., the DSB contract covering 400+ Danish stations and the Aarhus Light Rail maintenance framework). Major consortium engagements include the EPAS partnership with Siemens for Banedanmark's electrification programme and the Greater Copenhagen Light Rail turnkey contract with Siemens and Hovedstadens Letbane I/S. Reported revenue for fiscal year 2024/2025 was EUR 265.5 million with 938 employees and a customer satisfaction score of 4.76/5.0.

Aarsleff Rail is a wholly-owned subsidiary of Per Aarsleff Holding A/S, part of the larger Aarsleff Group (~9,000 employees, DKK 22 billion revenue in FY 2023/2024). The Group structure provides access to sister-company capabilities (Per Aarsleff for earthworks, Wicotec Kirkebjerg for technical installations, Munck Havne & Anlæg for harbor/anlage works) that are routinely co-deployed on major projects. The company traces its railway heritage to 1911 and was reorganized into the current Aarsleff Rail A/S entity in 2009; it entered Sweden in 2014 through the Anker AB acquisition and Norway in 2017/2022 via Trym Anlegg AS.

Name

Aarsleff Rail

Legal name

Aarsleff Rail A/S

Website

https://aarsleffrail.com

Company type

Private

Founded year

2009

Operating status

Operating

Headcount range

251–500 employees

Short description

Aarsleff Rail is a Scandinavian railway infrastructure contractor that designs, builds, and maintains rail networks across Denmark, Sweden, and Norway for government owners such as Banedanmark, Bane NOR, Trafikverket, and DSB, generating EUR 265.5 million in FY 2024/2025 revenue as a subsidiary of the Aarsleff Group.

Ownership category

akta.pro rank

Product category

Railway Infrastructure Construction Services

NAICS

Support Activities for Rail Transportation (4882)

SIC

Miscellaneous Transportation Equipment (3790)

akta.pro primary industry

Rail Electrification Systems Construction (OCS/OHL, Third Rail) (IMAFAFAB)

akta.pro secondary industries

Bridges, Viaducts & Elevated Guideway Construction (IMAFAFAF), Rail Signaling & Train Control Infrastructure (Interlockings, ETCS/CBTC Wayside) (TLAJADAB), Rail Stations & Rail-Adjacent Infrastructure Interfaces (Platforms, Access, Depot Connections) (TLAJADAJ), Rail Maintenance-of-Way (MOW) Equipment & Services (Tamping, Grinding, Renewal) (TLAJADAH)

Keywords

• Railway infrastructure construction
• Track renewal services
• Catenary system installation
• Light rail construction
• Railway maintenance services

Headquarters

HQ city

Viby

HQ country

Denmark

HQ region

Europe

Offices8 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Infrastructure, Supply Chain, Technology or R&D, Marketing or Sales

Revenue model

1. Railway Infrastructure Project Contracts: Aarsleff Rail generates the majority of its revenue through large-scale public tender contracts for railway infrastructure projects including track renewal, electrification, bridge construction, and station modernization. Projects are awarded by government railway infrastructure owners across Denmark, Norway, and Sweden. Revenue for 2024/2025 was 265.5 million EUR.
2. Facility Management and Maintenance Contracts: Recurring framework contracts for ongoing maintenance and service of railway infrastructure and station facilities. Includes DSB station facility management covering 400+ stations in Denmark, Aarhus Light Rail maintenance (117 km network), and Norrköping Municipality light rail operations (20-year contract, 2003-2023).
3. Operations and Maintenance Services: Long-term operations and maintenance contracts with infrastructure owners for railway networks, including norm-based and condition-based maintenance, service response, winter services, and technical installations maintenance.

Go-to-market motion1 record

Distribution channels4 records

Marketing channels4 records

Core offering

Aarsleff Rail designs, plans, and constructs railway infrastructure across Scandinavia, covering track renewal (mechanical and manual), catenary/traction current systems, railway signalling, bridge construction, station modernization, and light rail systems. The company also delivers long-term operations and maintenance, facility management, and certified railway safety services for government-owned networks in Denmark, Sweden, and Norway.

Product overview

Aarsleff Rail is a leading Scandinavian railway infrastructure contractor offering comprehensive construction and maintenance services. The company operates across Denmark, Sweden, and Norway as part of the Aarsleff Group. Their service portfolio includes track work (mechanical and manual renewal, alignment, tamping, welding), traction current/catenary systems, railway installations (signaling, interlocking, high-voltage), construction services (bridges, stations), light rail systems, underground infrastructure, railway safety services, and facility management. The company serves major infrastructure owners including Banedanmark, Bane NOR, Trafikverket, and DSB, with recent notable projects including the electrification programme, Copenhagen South Station, Aarhus Central Station renewal, and Denmark's largest battery train charging hub.

Differentiator

Problem solved

Functional benefit

Products and services

• Track Work
• Traction Current / Catenary Systems
• Railway Installations
• Railway Construction Services
• Railway Maintenance Services
• Light Rail Systems
• Station Facility Management
• Battery Train Charging Infrastructure

Quantifiable outcome

• Revenue of 265.5 million EUR in 2024/2025 fiscal year
• +7 more outcomes

Named customers12 records

Segments2 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

Nine partnerships are on record, tiered core and minor.

• Siemens MobilitycoreStrategic or Co-development Partner · 22 May 2026Aarsleff Rail and Siemens Mobility were selected to build Denmark's largest charging facility for battery trains at Harlev Station on Stevns for Lokaltog. The contract (signed 22 May 2026) follows an extensive EU tender process. Siemens Mobility provides the charging technology while Aarsleff Rail handles construction. The project is funded by Region Zealand at DKK 241 million. Additionally, Aarsleff Rail and Siemens collaborate in the EPAS consortium for Banedanmark's electrification programme, and in the Greater Copenhagen Light Rail consortium.
• Munck Havne & AnlægminorStrategic or Co-development Partner · 1 January 2025Partner in the Kalvebod passing tracks project alongside Aarsleff Rail and Per Aarsleff Fundering, contributing to the construction of new passing tracks at Kalvebod in Copenhagen.
• Spitzke SEcoreStrategic or Co-development Partner · 1 January 2015Strategic partnership with German railway construction company Spitzke SE since 2015. Spitzke handles track alignment and works requiring the use of track renewal trains. The partnership has delivered multiple successful projects for Banedanmark, including track renewals on East Funen, Slagelse-Korsor, and most recently the Fredericia-Padborg track renewal (DKK 98 million). The partnership combines Spitzke's machinery and personnel for mechanical track works with Aarsleff Rail's project management and local expertise.
• Wicotec Kirkebjerg A/SminorStrategic or Co-development PartnerWicotec Kirkebjerg A/S is a sister company within the Aarsleff Group. The two companies collaborate on the DSB facility management contract, where Wicotec Kirkebjerg provides support alongside Aarsleff Rail's approximately 50 technicians and 25 administrative employees.
• Per Aarsleff A/ScoreStrategic or Co-development PartnerPer Aarsleff A/S is the parent company and part of the Aarsleff Group. Aarsleff Rail collaborates with Per Aarsleff on major projects where extensive earthworks, sewer, and foundation work are required, such as Bridge Package 1 in Aarhus (Banedanmark project, DKK 213 million) and the Kalvebod passing tracks project. Per Aarsleff Fundering and Munck Havne & Anlag are also involved in the Kalvebod project.
• Trym Anlegg AS (now Aarsleff Rail AS)minorStrategic or Co-development PartnerTrym Anlegg AS became part of the Aarsleff Rail Group in 2022 and was officially renamed Aarsleff Rail AS in 2025, marking Aarsleff Rail's formal entry into the Norwegian market under its own brand.
• Hovedstadens Letbane I/S (Greater Copenhagen Light Rail)coreImplementation/ SI/ Consulting PartnerAarsleff Rail works in consortium with Siemens AG and Siemens A/S under a turnkey contract with Hovedstadens Letbane I/S for the 28-km Greater Copenhagen Light Rail. Aarsleff Rail is responsible for all track structures, drainage, stations, catenary masts, and technical systems. Two sections already completed and handed over.
• SwecominorImplementation/ SI/ Consulting PartnerSweco serves as advisor and engineering consultancy on multiple projects including the Kalvebod passing tracks (project development phase) and the Slagelse-Korsor track renewal. Sweco provides engineering design and project advisory services.
• Bane NORcoreChannel Partner/ Reseller/ DistributorBane NOR is the Norwegian government agency responsible for the national railway infrastructure. Aarsleff Rail holds all necessary railway safety competencies required to work on the national rail network and has delivered multiple projects for Bane NOR including Grong Train Station, Nordre Ilevollen, and the Verdal/Sparbu station modernization (NOK 142 million).

Scale indicators7 records

Recent moves10 records

Expansion highlights5 records

Direct peers

• Spitzke SE: German full-service railway construction contractor covering track, catenary, signalling, and civil works. Aarsleff Rail has had a strategic partnership with Spitzke since 2015 for mechanical track-renewal projects (East Funen, Slagelse-Korsor, Fredericia-Padborg), making them both allies and competing bidders on cross-border Nordic projects.
• Strukton Rail: Dutch-based European rail infrastructure contractor delivering track, catenary, signalling and rail maintenance across the Nordics, Netherlands, and Italy. Closest direct competitor in the Scandinavia rail-electrification and maintenance-of-way segments Aarsleff leads.
• Rhomberg Sersa Rail Group: Swiss/Austrian rail construction and maintenance specialist active across Europe with a full-service model (track, electrification, slab track, diagnostics). Directly comparable in multi-disciplinary scope and Nordic bidding posture.
• Leonhard Weiss Bauunternehmung: German full-service civil and rail contractor delivering track, catenary, and station construction. One of the few European firms with the same end-to-end railway capability stack across multiple voltage standards, similar to Aarsleff.
• Infranord AB: Swedish state-owned railway construction and maintenance contractor, the leading domestic competitor for Trafikverket contracts. Direct head-to-head on Swedish catenary, track renewal, and bridge projects that Aarsleff Rail AB bids into.
• Colas Rail: European rail infrastructure subsidiary of the Colas Group operating across UK, France, and Nordics. Competes with Aarsleff on multi-disciplinary tender packages including catenary, signalling, and light rail build-outs.

Broad incumbents

• Balfour Beatty Rail: UK-listed infrastructure major with a dedicated rail division delivering track, electrification, and stations. Larger and broader portfolio, but overlaps with Aarsleff on complex multi-disciplinary rail tenders across Europe.
• Skanska AB: Swedish-headquartered global construction group that bids into Trafikverket projects and signed the Sävenäs Depot subcontract with Aarsleff. Overlaps with Aarsleff Rail on major Swedish rail civil contracts as a partner and competitor.
• NCC AB: Major Nordic construction firm with rail-adjacent civil engineering capability and infrastructure maintenance operations in Sweden, Norway, and Finland. Competes for the same government rail contracts at the heavy-civil intersection.

Regional players

• Implenia AG: Swiss construction group with a significant rail infrastructure unit (formerly Bilfinger Construction). Adjacent geography and similar end-to-end rail scope; bids into Scandinavia via tenders and consortiums.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks7 records

Key highlights7 records

Customer concentration

• LinkedInlinkedin.com/company/aarsleffrail/posts/?feedView=all

Compliance12 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles10 records

Subsidiaries2 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Aarsleff Rail