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M74 piling work complete

Morgan Est has successfully finished the piling works on the £445M Interlink M74 Completion Project in Glasgow for Transport Scotland.

The piling work which is worth over £6M has been carried out for Interlink, a joint venture between Balfour Beatty, Morrison Construction, Morgan Est and Sir Robert McAlpine, who are the main contractors leading the project.

Piling began 12 months ago on the contract’s single largest structure at Port Eglinton viaduct, which spans 750m. The work comprised of two abutments, 11 piers and two temporary trestles, along with a programme of preliminary test piles.

The piles installed are 1.2m, 1.05m and 900mm in diameter and are up to 46m in depth. They have been constructed using rotary auger techniques and a Bentonite support fluid to stabilise the bores. At the peak of the operation there were four piling rigs on the project, which were further challenged by difficult working conditions.

Mark Alderson, Morgan Est contract manager for the project, said: “This was a technically complex and challenging contract where operatives were working in a thriving city centre location with numerous interfaces with the public, roads, rail lines and tunnels.

“In order for much of the piling to take place we required a number of road closures and permission from Network Rail to work close to its infrastructure overnight. However, the work was completed successfully and I am extremely pleased with the final outcome.”

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