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Collaboration at work in Harlesden

Footbridge given a new lease of life

Cromwell Road footbridge on the A406 at Pinkham Way, was lifted back into place at the weekend after receiving bridge deck refurbishment works. The pedestrian footbridge which provides locals and school children with safe passage over six lanes of live traffic, has been given a new lease of life.

The footbridge’s deck plates have been removed and replaced with 6mm full length mild steel plates, complete with an anti-slip waterproofing surface. The structure has been painted and two additional coats were applied to the repaired areas. The deck drainage system has been replaced with new pipes and two new ground drainage runs.

Work commenced on the busy footbridge on Friday 19th July 2013, to ensure works were carried out in the school summer holiday as agreed with TfL and Hollickwood Primary, a well-attended local primary school immediately to the southwest of the bridge. Local businesses such as Tesco’s, the BP garage, Volkswagen and the Friern Retail Park were also informed of the works, as well as local traffic diversions.

CONWAY AECOM working with our supply chain removed the eastbound span and ramps of the footbridge. At 23:20 eastbound lane 1&2 closures were installed, to allow the 80 tonne crane to position itself within the traffic management, thus reducing the risk of an overrun on the network. At 12:10am a full closure was set-up on the eastbound section of the A406, to allow the crane to move into its final position. Articulated lorries lined up to receive the bridge span and supporting ramps.

The removal of the eastbound side of the footbridge with pedestrian ramps, which were loaded in pairs, took less than 4hrs and the road was reopened by 04:25. A similiar procedure was carried out on the westbound section of the A406 the following night, and this time the road was reopened by 03:00.

The reverse process was successfully carried out last weekend when the footbridge was slotted back into place. The scheme has allowed a number of other works to take place within the closures, including routine structures maintenance and reactive maintenance.

Collaboration at work in Harlesden

“The A406 is an important thoroughfare for through traffic, and is therefore a challenging route to maintain. Work has been phased to reduce the amount of disruption caused and maintain traffic flow. These works will benefit both pedestrians and motorist with a refurbished footbridge. We are delighted that the project has run smoothly and with minimal disruption to everyone in the locality.” Matt Smith, Structures and Tunnels Manager

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