Rotary Bored Piling Specialists

Piffs Elm (M5 Overbridge)



Ultimate Client
Highways Agency
Main Contractor
R&W Civil Engineering
Type of Piling
Bearing
Diameter
900mm
Depth
14.0m
Project Difficulties and Restrictions

Thaumasite degredation to the pad foundations of a road bridge crossing the M5 motorway required 900mm diameter piles to be constructed adjacent to live motorway and beneath the existing bridge in 5.5m of headroom, and in between existing bridge columns.

The Martello Solution

Martello used their MP5000 series rigs to form 900mm diameter piles to 14.0m at locations between existing columns to support the overbridge through temporary works, allowing the existing degraded concrete foundations to be removed, and the existing bridge columns to be integrated with the new foundations provided by Martello.


This technique allowed the client to retain the existing overbridge whilst replacing the foundations, without causing disruption to the overbridge or the motorway.
The large diameter piles provided by Martello were critical to this process, by providing high capacity foundations, in locations inaccessible by conventional equipment.
 

Specific Project Features

The existing bridge had pad foundations separated by a gap between the columns. This allowed large diameter piles to support a new link beam replacing the degraded pad foundations.
Martello Installed 18no 900mm diameter piles to 14.0m in depth.


The piling was completed on programme, in several phases, allowing each existing overbridge pier to be replaced in sequence.
 

Future Potential

Large diameter, and high capacity piles can be easily installed under motorway bridges, allowing failing foundations to be replaced without the necessity to demolish an existing operational structure.




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For more information about our services and how we can help you with your projects, please call us on 01476 570781 or leave us a message below.