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MottMcDonald

Annual review 2022

From west to east: connecting London and beyond
Future-ready cities for south-east Asia

From west to east: connecting London and beyond

When the Elizabeth line opened last year, more than 1M people used the service through central London in its first week, with one in six of all UK rail journeys now made using it. It took decades of planning, approvals, design and construction to build the route that stretches 118km from Reading, west of London, to Shenfield in Essex and Abbey Wood in southeast London. We were there at every stage, advising on the route and its structures, producing solutions for its trains, and developing its rail systems. To allow trains to travel through 42km of tunnels under the capital, our engineers designed the tunnel alignment to be as ‘straight’ as possible to minimise the number of curved stretches, which slow trains and increase track wear. Meanwhile, our expertise in sequential excavation with sprayed concrete lining helped create the vast subterranean caverns required, measuring up to 17m high and 16.5m wide. And our innovative real-time site monitoring data and state of the art 3D numerical analysis of ground movements enabled the 42m deep Moorgate shaft – the deepest point on the line – to be built safely and on time, keeping the project on track. Up to 36,000 passengers use the Elizabeth line every operating hour. But it’s more than a railway, it’s helping to revitalise areas, such as Woolwich, providing better and faster connections to job opportunities and services. Overall, the line is expected support the creation of 300k jobs and deliver 180k new homes and 4.4Mm² of office and retail space.

When the Elizabeth line opened last year, more than 1M people used the service through central London in its first week, with one in six of all UK rail journeys now made using it. It took decades of planning, approvals, design and construction to build the route that stretches 118km from Reading, west of London, to Shenfield in Essex and Abbey Wood in southeast London. We were there at every stage, advising on the route and its structures, producing solutions for its trains, and developing its rail systems.

To allow trains to travel through 42km of tunnels under the capital, our engineers designed the tunnel alignment to be as ‘straight’ as possible to minimise the number of curved stretches, which slow trains and increase track wear. Meanwhile, our expertise in sequential excavation with sprayed concrete lining helped create the vast subterranean caverns required, measuring up to 17m high and 16.5m wide. And our innovative real-time site monitoring data and state of the art 3D numerical analysis of ground movements enabled the 42m deep Moorgate shaft – the deepest point on the line – to be built safely and on time, keeping the project on track. ...

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Project summary

Project

The Elizabeth line

Client

Transport for London (TfL)

Location

London, UK

Expertise

Business case consultancy, design, environmental assessment, project management, rail systems integration, route management, station integration, tunnelling

118km

route

42km

tunnels under central London

Neil Henderson

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Neil Henderson

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MottMcDonald

Annual review 2022

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