Radlett Strategic Rail Freight Interchange (SRFI) is a transformative infrastructure project in Hertfordshire designed to shift freight from road to rail. The scheme focuses on reducing congestion, cutting carbon emissions and supporting the UK’s Net Zero ambitions, all through the introduction of a rail link with direct connection to the Midland Main Line.
Led by VolkerFitzpatrick, the project includes the successful installation of a 60-metre, 6,000-tonne precast concrete underbridge during a nine-day Network Rail blockade. The works also encompass switches and crossings, signalling systems, and overhead line equipment, all delivered with minimal disruption to passenger activities.
Our team provided specialist engineering and environmental consultancy services for the scheme, seeing us assess the extent and removal of landfill waste beneath the underbridge construction areas alongside subsequent reinstatement of ground levels to create a suitable works platform. The work meets rigorous environmental standards, Network Rail approvals and integrated seamlessly with the surrounding landscape.
With each freight train operating from the site removing up to 76 heavy goods vehicle journeys from UK roads, contributing to national decarbonisation goals, and improving air quality, and boosting biodiversity were core project goals. A key highlight is the 600-acre country park, featuring 200 acres of woodland and 400 acres of conservation grazing land, which enhances biodiversity and delivers long-term ecological value. The scheme also incorporates 17 kilometres of footpaths, bridleways, and trails, connecting communities to nature and encouraging active travel.
Beyond its environmental impact, the SRFI focuses on the delivery of meaningful social value through local employment, apprenticeships, and partnerships with educational institutions, investing in the future of the community.



