HS2 Main Works Civils Contract – Water Orton
Project Scope and Delivery
HS2 is the UK’s state-of-the-art high-speed line, critical for tackling carbon reduction. It will provide much-needed rail capacity across the country, and is integral to rail projects in the North and Midlands. HS2 is Britain’s biggest environment project, delivering miles of ecological and landscape investments alongside construction. SYSTRA is working in a Design Joint Venture with Mott MacDonald, supporting contractor Balfour Beatty VINCI (BBV) on Lots N1 and N2, which are between the Long Itchington Wood Green tunnel and the Delta Junction/Birmingham Spur and from the Delta Junction to the West Coast Main Line tie-in respectively.
The section of the HS2 route where the two Water Orton viaducts are located is known as the Delta Junction, a triangular section of line where the new railway curves west towards Birmingham and runs north towards Crewe and beyond. The Water Orton viaducts link the curve that heads west towards Birmingham with the main line heading north, and are needed to carry the railway across a network of existing motorways, roads and footpaths.
The area between the two Water Orton viaducts, which was previously the site of the Old Saltleians Rugby Club, will be redesigned to provide bigger, better, more joined up habitats such as species-rich grasslands and native species tree planting. Improved connections through the Delta Junction area will be developed, with new paths and cycle routes set within a nature-rich corridor.
SYSTRA’s Water Resources Team assessed the hydrology of the watercourse and built a 1D Hydraulic Model of the area, which allowed the team to assess the existing flood characteristics of the watercourse. Liaising with the wider design team, we produced a watercourse realignment design that significantly improved the environment in this area. Our hydraulic modelling also demonstrated that flood risk would be managed successfully.