Crewe Basford Hall and Independent Lines Re signalling GRIP 4-8

The Challenge

Being the final major station before the branch to Liverpool Lime Street, with the main line continuing to Scotland, Crewe has always been a significant major junction on the West Coast Main Line, meaning that its signalling infrastructure is extensive and complex. Like many other projects, to mitigate Covid-19 infection risk there was more reliance on visual tools, and remote interdisciplinary checks and engineering reviews.

The Solution

As part of the Crewe BHIL project GGP delivered hundreds of Civils design assets from outline design to detailed design. In addition, we supplied around a dozen temporary works checks for installation of Gantries, removal of Gantries and PSP/REB building installations. The asset types and numbers were varied, complex and large in quantity.

In addition to the delivery of design works, GGP also provided site surveys for Topographical information and Ground Investigations. GGP Consult teamed up with GGPGeo to undertake various types of investigation works such as Window Sampling & Dynamic Probing, Diamond Coring and Handheld Mackintosh Probing via Dynamic Cone Penetrometer.

The Result

GGP were able to complete the outline and detailed designs in line with programme to achieve commissioning dates. Due to the project scale, GGP work closely with other delivery parties and manage the interfacing deliverables. The multi-disciplinary integration was important role for GGP in delivering the project effectively. The multidisciplinary areas consisted of track drainage, OLE, HV/E&P, which GGP considered and integrated at each stage gate ensuring all proposals for the project was included within the Civils design.

The feedback regarding site surveys for ground investigation planning and completion from the client was very positive. We worked closely with Siemens construction and design team which enabled the planned surveys to be completed in a timely manner and to a high standard.

Further to this, the Project Manager also ensured regular co-ordination with the client via production of trackers, early warning notices and regular meetings. This was paramount in highlighting any potential programme risk to the client which ensured any issues were dealt with in a timely manner and did not impact the programme.