Skip links

Parson’s Tunnel, Holcombe

Parsons tunnel holcombe

Parson’s Tunnel, Holcombe

This project provides resilience to coastal hazards such as rockfalls and landslides and protects the iconic coastal railway between Exeter and Newton Abbot.

Concrete Society Awards 2026 logo

Parsons tunnel holcombe

Project Information

This project provides resilience to coastal hazards such as rockfalls and landslides and protects the iconic coastal railway between Exeter and Newton Abbot.

The design, using precast concrete, coloured in response to the local sandstone, also protects rail passengers’ seaward view.

  • Nominator Cornish Concrete Products
  • Client Network Rail
  • Precast Supplier Cornish Concrete Products
  • Contractor Morgan Sindall Construction & Infrastructure

Judge’s Comments

This project is a key part of the Network Rail resilience programme for maintaining rail connectivity to the further south west and a significant architectural addition to the iconic Brunel
railway line. It was a complex project logistically, with a demanding programme and the location of the build incredibly constrained.

Locally sourced, red-coloured concrete was used to match the context of red sandstone rocks. Some 130 precast units provided a quality finish, ease of transportation and speed of erection.
Concrete was chosen for its durability and ability to withstand the harsh coastal environment and protect the railway from falling rocks. No other material would have been able to compete with the service life. The precast mix design contained 30% cement replacement, lowering the carbon footprint. The precast units still look exemplary. The 109m-long continuous uniform structure, with ‘classical colonnade’, comfortably knits within the surrounding geological
red rock dramatic landscape and the open-sided structure maintains dramatic views of the South Devon coastline for rail passengers.

Project Gallery

This website uses cookies to improve your web experience.