Project London, United Kingdom

Power Road Service Bridge

Piles to support the replacement bridge to improve London's roads and public spaces

Martello's ability to install large diameter piles from beneath the existing bridge allowed the A406 to remain open

Technical Specifications

Pile Type: Bearing

Number of Piles: 51no.         

Diameter: 750mm  

Depth: 26m

The Challenge

Piles were required to provide foundations for a new reinforced concrete bridge to replace the existing Power Road Bridge and span over the Broad Street to Old Kew railway. Owing to the access restrictions on the south abutment all plant and equipment had to use a road-rail access point crossing, to carry out the piling works. 

The project required the installation of 750mm diameter piles in restricted access and low headroom conditions beneath the existing Power Road Bridge to the busy A406. The A406 was required to remain open with minimal disruption to traffic whilst works were being carried out, and hence necessitating foundations to be installed below road level.

The concrete needed to supply the piles had to be pumped 160m via concrete lines which also had to cross over the Power Road Bridge.

The Solution

Martello utilised their MP4000 low headroom system to carry out the construction of the 750mm diameter piles beneath the existing bridge in 4.8m of headroom, enabling foundation works to be undertaken without disruption to the A406 traffic flowing in and out of London, and thereby easing congestion. 

As part of the same TFL infrastructure package to upgrade existing bridges, Martello also carried out similar piling at Ardleigh Green Bridge. 

Project details

Project name

Power Road Service Bridge


Bridges, Road works


Large diameter bored pile under casing, Restricted access bored piling

Contract type



London, United Kingdom



Building Period

2016 - 2017

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