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Case Studies

Bridges and highway structures case studies

Below is a list of clickable case studies covering a selection of Bridges and highway structures projects completed by FM Conway. Please click on the link to review the full case study.


Neasden Super Scheme

Client Transport for London

Overview The A406 North Circular Road remains one of London’s busiest A-roads. At peak capacity, it experiences traffic volumes only 10 per cent lower than the M25. The Iron Bridge and the Dog Lane Arches in Neasden are two of the most important structures along this strategic road. They carry the A406 across the Jubilee and Metropolitan lines, while also carrying mainline rail lines into London. They are also nearly a century old. When the concrete waterproofing on both structures began to fail, it became clear that safety-critical refurbishment was needed. Disruption to the transport network was unavoidable during the works, but Transport for London (TfL) wanted to ensure that it was kept to a minimum. TfL commissioned FM Conway to carry out three key schemes on the A406: the renovation of the Dog Lane Arches; the refurbishment and lifting of the Iron Bridge; and the rebuilding of the retaining wall on Dog Lane itself. All three would be delivered simultaneously to minimise disruption to travellers, local residents and businesses and the need for additional road closures in the future.

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Putney Bridge

Client London Borough of Wandsworth

Overview Putney Bridge is a Grade II Listed structure over the River Thames linking Fulham on the north bank with Putney to the south. Following a competitive tender based on technical capability and value for money, FM Conway was appointed to carry out essential maintenance repairs to this critical asset which supports an average of 60,000 vehicular, cyclist and pedestrian movements each day.

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Maidstone United Main East Stand Extension

Client Maidstone United Football Club

Overview Following a successful season in 2014/2015, Maidstone United commissioned FM Conway to extend the Main East Stand at the Gallagher Stadium in order to increase capacity, improve the spectator experience and meet future requirements. In addition to completing the extension works, this project included new board director and presidential suites, new turnstiles and standing terraces behind the goals.

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Two Bridges School Transformation

Client Two Bridges School

Overview Two Bridges School was a newly amalgamated behaviour support school in Southborough, Tunbridge Wells. The school was desperately in need of a new school building and therefore called on the FM Conway civil engineering team to transform a former YMCA into a high-quality teaching facility.

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Bexley Bridge Reconstruction

Client London Borough of Bexley

Overview Bexley Village Bridge is a critical part of the local infrastructure in Bexley. Carrying the A223 over the River Cray, it is one of the main routes in and out of the high street and an important thoroughfare for local residents and businesses.
First constructed in 1872 to replace an earlier 18th century structure, the bridge was built using Victorian cast iron beams and a mix of brick, concrete and stone parapets. A steel footbridge was later added to the south side of the bridge.
Following many years of wear and tear, an assessment survey carried out by the London Borough of Bexley showed that the bridge was steadily weakening and was at risk of becoming unsafe.
As the term maintenance contractor for the borough, FM Conway was commissioned by Bexley Council to carry out a comprehensive upgrade scheme, supported by funding from Transport for London, which would see the existing bridge and parallel footway demolished and rebuilt. Crucially this would allow the overall width of the bridge to be increased from 9.22m to 9.91m, bringing it within safe limits for modern foot and vehicle traffic.

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