The project involved regrading approximately 280 metres of the embankment to enhance structural stability and improve rail safety.
The Seaton South embankment supports the twin-track GSM1 line at the northern end of the iconic Harringworth (Welland) Viaduct, located just east of the villages of Seaton and Harringworth in Northamptonshire. Due to long-standing instability along the embankment, train speeds on this section of the GSM1 line had been restricted to 20 mph, impacting efficiency and reliability.
To address this, the project focused on regrading approximately 280 metres of the embankment to improve structural stability and enhance rail safety. Works included installing stone to reduce the slope angle and provide robust support for the railway infrastructure.
22,000t
of 6F5 used for regrade works
280m
regrade complete
The scope of the project was to design and implement the following works:
The project successfully demonstrated best practice across several key areas:
The scheme presented several challenges, including strict landowner agreements and a compressed delivery timeframe. In addition to regrading the embankment, the scope was expanded to include the construction of a new access track for the landowner and the installation of new fencing along the affected area.
Success was achieved through early engagement with the landowner, which helped foster positive community relations. The team also sourced stone strategically from local quarries, securing competitive rates that exceeded expectations. Furthermore, proactive management of unforeseen changes ensured the project was completed on time despite additional works being introduced.
Collaboration was the cornerstone of this project, driving its success from start to finish. From the outset, the team established a strong partnership with both the designer and the landowner, ensuring that every stage of the scheme was underpinned by open and transparent communication. Regular updates, clear explanations of the works, and a willingness to listen to feedback created a positive and cooperative environment.
This proactive approach meant that any concerns were identified early and resolved quickly, preventing potential delays and maintaining momentum throughout the delivery phase. By fostering trust and building strong relationships, the team not only met the technical requirements of the project but also strengthened community confidence in the work being carried out.
Network Rail
VolkerRail/Story joint venture were tasked with the £80m project as part of a £137m investment that saw the undertaking of extensive enhancement works to remove several bottlenecks along the route to improve reliability, increase passenger services and aid in freight movements.
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