What Rhomberg Sersa does

Rhomberg Sersa Rail Group (RSRG) is a privately held, family-owned full-service railway infrastructure provider headquartered in Bregenz, Austria, and Zurich, Switzerland, operating across 8+ countries through wholly owned subsidiaries in Austria, Switzerland, Germany, the UK, Ireland, Australia, Canada, the USA, and the Nordics. Founded through the 2002 partnership between Rhomberg Bahntechnik and Sersa AG during the Lötschberg Tunnel project (with heritage dating to Bahnbau Wels in 1950), the company delivers track construction (mechanised and commercial), slab track systems, tunnel refurbishment, railway systems engineering (catenary, power supply, signalling, electrical infrastructure), and Digital Rail Services for national railways, metro/light rail operators, industrial clients, and owners of track-laying machines.

The company employs 1,001–5,000 people and operates an integrated technology stack anchored by the proprietary ZOKA Safety and Communication System (real-time positioning, access control, alarms for construction sites), the Slab Track Austria system co-developed with ÖBB and PORR, and a Digital Rail Services portfolio covering BIM, laser scanning, and geodata. RSRG holds an extensive portfolio of mandatory certifications (ISO 9001/14001/45001/37301, EN 15085-2 CL1, ISO 3834-2, ECM, SCC, Achilles, TransQ Nordics, Single Safety Certificate, National Rail Safety Regulator) that pre-qualify it for public rail tenders across Europe and Australia.

Revenue is generated through project-based enterprise sales to government-owned railway operators via direct contracts and consortium (ARGE) arrangements for mega-projects (e.g., ~€76M Semmering Base Tunnel with PORR, Copenhagen M4 with Efacec), supplemented by equipment and material sales/rental, rail vehicle maintenance, and technical consulting. Pricing is quote-based and project-specific; the company markets via its 'keep track' magazine, website, press releases, and LinkedIn, with sustainability messaging under the #railtozero programme. EcoVadis Silver/Bronze/Committed ratings and a 75,000 t CO2 greenhouse gas balance reflect active ESG positioning aligned with public procurement criteria.

Name

Rhomberg Sersa

Legal name

Rhomberg Sersa Rail Holding GmbH

Website

https://rhomberg-sersa.com

Company type

Private

Founded year

2002

Operating status

Operating

Headcount range

1,001–5,000 employees

Short description

Rhomberg Sersa Rail Group is a privately held, family-owned full-service railway infrastructure provider offering track construction, slab track systems, tunnel refurbishment, railway systems engineering, and digital rail services to government-owned railway operators across Europe, Australia, and North America.

Ownership category

akta.pro rank

Product category

Railway Infrastructure Services

NAICS

Support Activities for Rail Transportation (488210)

SIC

Railroad Equipment (3743), Construction Machinery & Equip (3531)

akta.pro primary industry

Railway Track & Civil Works Construction (Ballast, Slab Track, Alignment) (IMAFAFAA)

Keywords

• Railway infrastructure services
• Track construction
• Slab track systems
• Tunnel refurbishment
• Rail electrification

Headquarters

HQ city

Bregenz

HQ country

Austria

HQ region

Europe

Offices9 records

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Railway Infrastructure Project Delivery: Large-scale infrastructure projects including track construction, tunnel renovation, modernization, and complex rail projects. Revenue is project-based with long sales cycles and consortium/ARGE partnerships for mega-projects.
2. Equipment and Material Sales: Sale and rental of machines, construction materials, rail vehicles, and specialized equipment for railway construction and maintenance.
3. Technical Consulting and Engineering Services: Engineering consulting, project management, and technical advisory services for railway infrastructure planning and execution.

Go-to-market motion1 record

Distribution channels3 records

Marketing channels6 records

Core offering

Rhomberg Sersa Rail Group is a full-service railway engineering provider delivering track construction (mechanised and commercial), slab track systems, tunnel refurbishment and rehabilitation, railway systems engineering (overhead lines, power supply, signalling, control technology), Digital Rail Services, and construction site safety solutions (including the proprietary ZOKA system). The company also offers rail vehicle maintenance and rental/trade of machines and construction materials. It serves national railway operators, metro/light rail authorities, and industrial clients across Europe, Australia, and North America.

Product overview

Rhomberg Sersa Rail Group is a full-service railway engineering company offering an almost comprehensive range of railway construction, infrastructure and service products. The portfolio includes Digital Rail Services for planning, construction and maintenance; Track Construction services (both mechanised and commercial including ballast and slab track systems); Infrastructure services covering rail power supply, catenary systems, electrical infrastructure, electromechanical systems, control/safety/communication systems, and signalling; Construction Site Safety solutions anchored by the proprietary ZOKA Safety and Communication System; Tunnel refurbishment and rehabilitation services; and Rail Infrastructure Projects delivery. The company also offers machines, construction materials, and rail vehicle maintenance through its subsidiaries. The Group focuses on customer-oriented and tailor-made solutions for light rail, main-line railways, freight lines, private infrastructure operators and keepers of track-laying machines.

Differentiator

Problem solved

Functional benefit

Brands

• ZOKA: A monitoring and communication system specifically developed to ensure major construction sites are managed safely and efficiently. Covers access control, identification, positioning of people, vehicles and equipment, communication and alarms.

Products and services

• Mechanised Track Construction
• Commercial Track Construction
• Slab Track Systems
• Tunnel Refurbishment and Rehabilitation
• Rail Infrastructure Project Delivery
• Railway Systems Engineering
• Digital Rail Services
• Construction Site Safety Services
• ZOKA Safety and Communication System
• Rail Vehicle Maintenance
• Rental and Trade of Machines and Construction Materials
• Railway Power Supply
• Catenary Systems

Quantifiable outcome

• 230 km/h maximum train speed capability for Slab Track systems
• +2 more outcomes

Named customers8 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature3 records

Partnerships

Five partnerships are on record, tiered core, major and minor.

• PORR GroupcoreStrategic or Co-development Partner · 20 March 2025Consortium partnership (BTA Semmering Basistunnel 4.1) for equipping the 27.3km twin-tube Semmering Base Tunnel with 55km of slab track. RSRG handles commercial management while PORR leads technical aspects. Companies previously collaborated on Koralm Tunnel equipment. ~76 million EUR contract from ÖBB-Infrastruktur AG.
• SwisscomcoreTechnology or IntegrationStrategic partnership for digitalizing construction sites. Swisscom and RSRG collaborate on implementing digital transformation initiatives and IoT solutions for railway infrastructure projects.
• EfacecmajorStrategic or Co-development PartnerPartnership for Copenhagen Metro M4 line extension project. RSRG and Efacec jointly responsible for installing slab track, power rail, and railway equipment. Project successfully completed June 2024 after 2,280 days.
• ÖBB (Austrian Federal Railways)coreStrategic or Co-development PartnerMajor client and strategic partner for railway infrastructure projects including Semmering Base Tunnel and Koralm Tunnel. ÖBB-Infrastruktur AG awards major contracts to RSRG consortiums for railway technology equipment and track construction.
• Die ZentralbahnminorStrategic or Co-development PartnerClient partner for Lake Brienz tunnel renovation project in Switzerland, part of the Consortium Brienzersee.

Scale indicators9 records

Recent moves8 records

Expansion highlights5 records

Direct peers

• Spitzke SE: German rail infrastructure specialist offering track construction, overhead line, civil works and logistics on active rail networks. Spitzke directly competes with RSRG's German operations (Berlin, Essen, Dresden) and is comparable in its focus on large-scale European rail infrastructure delivery.
• Leonhard Weiss GmbH & Co. KG: German family-owned construction company with substantial rail infrastructure, track, civil works and road construction divisions. Leonhard Weiss is comparable in size and family-owned, operating across Germany and overlapping with RSRG's German track construction business.
• Plasser & Theurer: Austrian specialist manufacturer of track maintenance and track-laying machinery (tampers, stabilisers, ballast regulators). RSRG operates one of its customer segments explicitly around 'Owners of On-Track Machines', and the two compete/collaborate in mechanised rail construction, with RSRG also providing rail-vehicle-maintenance services on Plasser-class machines.
• PORR Group: Austrian-headquartered major European construction group with a deep infrastructure division including rail track construction, slab track and tunnelling. PORR is RSRG's consortium partner on the Semmering Basistunnel 4.1 ARGE contract and a co-developer of Slab Track Austria, making them both a co-bidder and close direct competitor on European rail tenders.
• BeMo Tunnelling GmbH: Austrian-Norwegian tunnel specialist (part of the Züblin/Strabag group historically) providing conventional tunnel construction, refurbishment and rail tunnelling. BeMo is comparable to RSRG's tunnel refurbishment and rehabilitation capabilities, especially on Alpine and Northern European projects.
• Implenia AG: Swiss construction and real-estate services group with strong tunnelling, civil engineering and rail infrastructure capabilities. Implenia competes with RSRG Switzerland on rail and tunnel projects across the Swiss market and is a like-sized European specialist.
• Colas Rail: France-based international rail infrastructure contractor covering track, electrification, signalling, civil works and rail services across Europe. Colas Rail is comparable as a multi-country rail specialist competing for the same type of public-tendered mainline and urban rail projects.
• Vossloh AG: German rail equipment manufacturer specialised in rail fastening systems, switches, concrete sleepers and rail services. Vossloh overlaps directly with RSRG's track and slab track systems, and notably a 'Rhomberg Sersa Vossloh GmbH' subsidiary indicates deep historical commercial ties in the rail track products segment.

Broad incumbents

• Strabag SE: One of Europe's largest construction groups with rail infrastructure, tunnelling and track works as part of a broad transport-infrastructure portfolio. Strabag competes head-to-head with RSRG on large public rail infrastructure projects across the DACH region and beyond, leveraging its much larger balance sheet.
• Balfour Beatty: UK-listed infrastructure group with a significant rail division (overhead lines, signalling, track, civils). Balfour Beatty overlaps with RSRG's UK presence (Rhomberg Sersa UK Ltd.) and competes for major UK rail projects delivered under Network Rail frameworks.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat6 records

Key risks7 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCOGIhRWR2mrn_eEC0XMoV5Q
• Facebookfacebook.com/Rhomberg-Sersa-Rail-Group-107050258426697

Compliance14 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles11 records

Subsidiaries20 records

Funding overview

Funding rounds

Investors

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

M&A

Investments1 record

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

Frequently asked questions about Rhomberg Sersa