Heathrow Southern Rail Access
Heathrow Airport, London, UK (connecting to areas south of London) · Proposed (Feasibility studies ongoing since at least 2019) · £1.7 billion (capital cost, estimated)
The judgement call
Account-gated at launchThe project aims to significantly improve rail access to Heathrow from the south, promoting a shift to sustainable transport modes and reducing road congestion. - The proposal involves a new private company (HSRL) to finance, build, and own the infrastructure, representing an alternative funding model for major rail projects. - The ongoing feasibility studies and parliamentary engagement highlight the extensive planning and approvals process required for large-scale infrastructure.
Key engineering challenges
Constructing new railway lines, primarily in tunnel, within a densely populated and operational environment. - Minimizing environmental impact through careful route selection, electrification, and tunneling. - Integrating the new rail link with existing railway networks and the complex infrastructure of Heathrow Airport. - Securing government approval and funding by demonstrating a compelling business case and addressing stakeholder concerns.
Project facts
- Client / owner
- Heathrow Southern Railway Ltd (HSRL) (proposed owner), Department for Transport (DfT)
- Lead contractor
- Not yet appointed
- Lead designers
- WSP (Systems Integrator for broader Heathrow Rail Access Programme)
- Project type
- new build
- Scale
- Up to 8 miles of new railway, mainly in tunnel; 4 trains per hour (tph) service between Heathrow Terminal 5 and Reading.
- Disciplines
- civil; structural; railway engineering; geotechnical; environmental engineering; transport planning; systems integration
- Standards & frameworks
- Network Rail standards, relevant UK railway regulations
Sources: Wikipedia: Heathrow Southern Railway (https://en.wikipedia.org/wiki/Heathrow_Southern_Railway) - Heathrow Southern Railway: Home (https://heathrowrail.com/) - Network Rail: Southern Rail Access to Heathrow Feasibility Study (https://www.networkrail.co.uk/wp-content/uploads/2019/04/Southern-Rail-Access-to-Heathrow-Feasibility-Study.pdf) - WSP: Systems Integration for the Heathrow Rail Access Programme (https://www.wsp.com/en-au/projects/heathrow-rail-access-programme)