Integrated Overhead Line Structure

Nationwide, England

2014 — ongoing

Clients RIBA, HS2 Ltd

Industrial Design

The Integrated Overhead Line Structure (OLS) is a design collaboration with global engineering firm Mott MacDonald to bring greater efficiencies to conventional and high-speed rail projects.The patented design exploits the dual structural and electrical insulation properties of densified wood laminate to integrate the OLS into a singular component, making it streamlined, lightweight and sustainable.

A yellow railway maintenance vehicle is on a track, surrounded by workers in orange safety gear. A crane and equipment are positioned nearby. The sky is overcast, and trees and industrial buildings are in the background.

‘Undoubtedly the best piece of research since the end of British Rail. This is genius.’

Modern Railways Magazine

Creating the cantilever arm from the precision cellulose based composite material allows conductors and supply cables to be fixed to it directly and reduces the parts required, including visibly obtrusive ceramic insulating pots, by almost three-quarters. As well as providing a slender, function driven design, which sits harmoniously within surrounding landscapes, the integrated approach improves efficiency in terms of storage, transport, installation and ongoing engineering maintenance.

A large red cantilever railway bridge with multiple stone piers spans across calm water at sunset, reflecting on the surface below.

The innovative use of timber composite allows up to 32% saving in embodied carbon compared to typical alternative structures. Fully compatible with existing overhead systems, the design offers the potential for long-term cost savings and rail service performance improvements for the future.