Twickenham Station

The Twickenham Station development includes new residential buildings 4-7 storeys high, small retail units, a new ticket office and entrance for the station and car parking at-grade and over tracks.

Since 2009, our team has provided civil and structural engineering and geo-environmental contaminated land services for Twickenham Gateway and Twickenham station. Throughout this period, we have worked closely with architects, Rolfe Judd, principal contractor, Osborne, and client, Solum, to overcome the numerous logistical challenges presented by building over a busy station and live rails.

Our initial involvement with the scheme began by providing engineering input for the station itself, starting with the deck over the existing rail lines and buildings. Waterman utilised offsite manufacturing in the design and construction of the deck to reduce the impact of working in the ‘hazard zone’ next to the rail. This approach had multiple benefits, allowing us to complete complex works during short line possession periods, mitigate the health and safety risks and keep rail down-time to a minimum.”

Waterman also developed a construction sequence to allow piling and construction of in situ concrete pile caps during normal rail working hours to facilitate the installation of columns and the completion of the deck over the rail lines, all during rail possession time. Once the deck was completed, this then acted as the crash deck for the works above, which meant they could be carried out while the train lines were operating.

To enable this, our team devised a series of ‘rail-locked mini-sites’ which were fully isolated from live rail and were Network Rail-compliant in terms of health and safety. In conjunction with specifying offsite-manufactured components wherever possible, this had a huge impact on the project programme, reducing durations for the structural elements and saving three months on the overall construction programme.

Our team went on to design the structures interface with the new works, including the alterations to both the platforms and platform roof. Elsewhere, our engineers developed the design for below ground drainage, providing details for Under Track Crossings (UTX) and producing the methodology for the works to suit Network Rail’s requirements. Throughout the redevelopment, we worked with Network Rail to identify the construction process and sequencing for the whole scheme, allowing construction to take place during both normal working hours and rail possessions.

With the capacity to handle thousands of daily commuters and tens-of-thousands of rugby matchday passengers regularly bound for nearby Twickenham Stadium, the recently completed station now provides smooth transit for the largest crowds.

To complement the new station, the surrounding area has been revitalised with new bars, restaurants, along with retail and residential units which form the striking Twickenham Gateway development. Centred around a public plaza, the new amenities look set to become a popular addition to this bustling south west London town centre location. The Rolfe Judd Architecture-designed project will improve links to other transport modes, and offer a new riverside walk along the adjacent River Crane, running from the station to Moormead Park.

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