Rail
Tetra Tech provides advanced consultancy services to optimise and enhance railway infrastructure networks, including supporting the design, development, and modernisation of stations, depots, assets, and wider rail networks.
Maximising the efficiency and sustainability of rail transport while enhancing the passenger experience is a key challenge. Our infrastructure consultants work collaboratively with public and private sector railway clients to deliver future-ready solutions that address capacity challenges, support modal shift, and integrate new and existing transport systems. Our experts ensure projects meet client aspirations and align with local regulatory frameworks, stakeholder needs, and preferred models of funding and delivery.
With a robust track record in both light and heavy rail, our people provide end to end technical design services that integrate safety, sustainability, and assurance across all systems. Our services span the full project lifecycle—from initial feasibility and environmental impact assessment through to detailed design, construction supervision, and system integration. We develop new railway projects, manage assets, and upgrade existing rail infrastructure.
Strategic Rail Planning and Feasibility
We help clients shape long-term, sustainable rail strategies that align with economic growth, environmental policy, and transport demand.
- Network planning and option appraisal
- Business case development and economic impact assessment
- Stakeholder engagement and public consultation
- Interchange and connectivity strategies
- Environmental assessment and consenting
- Capacity and demand assessment
- Developing procurement strategies
Railway Engineering and Multidisciplinary Design
We provide integrated engineering design across all disciplines, delivering safe and efficient railway systems.
- Civil and track infrastructure design
- Electrification
- Signalling and control systems
- Station and maintenance depot design
- Route control centre and training facility design
- Systems engineering and assurance
- Digital and BIM-enabled design delivery
- Ticketing and wayfinding
Contract Administration, Construction Supervision, and Assurance
We provide experienced site supervision, quality assurance, and safety management services for rail construction and upgrades.
- Contract administration
- Site inspections and quality control
- Health, safety, and environmental (HSE) management
- Contractor interface and progress reporting
- Cost consultancy and dispute resolution
Sustainable Transport and Decarbonisation
We support the rail sector in meeting net zero targets and creating low-carbon transport solutions.
- Carbon accounting and net zero pathway development
- Low-emission infrastructure and vehicle integration
- Electrification and battery traction
- Modal shift and mobility as a service (MaaS) strategies
- Renewable energy and energy efficiency planning
- Customer experience and station urban realm
Railway Asset Management
Globally, Tetra Tech is a leader in smart rail systems for public and private sector clients. We leverage software like RailAI®, our high-end, autonomous track assessment system built in-house to deliver innovative solutions for public and private sector clients.
- Asset inventory
- Automated track inspection programmes
- Autonomous track inspections
- RailAI® Control system
- Three-dimensional Railroad Track Assessment system (3DTAS)
- RailWEB™ System
- CrossVu™ System
- RailAI® DMA Track Geometry Measurement System
- AssetAI™ – Rail Infrastructure Asset Management and Capital Maintenance Planning
- RailAI® Real-Time Rail Asset Data Analytics
