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Aarsleff wins Mersey Gateway work

Aarsleff has announced that it has won two contracts for piling work on the new Mersey Gateway bridge project between Runcorn and Widnes from ain contractor Mersey Link.

Piling work on the Ditton Junction Bridge and Widnes Victoria Loops Viaduct has already started and follows on from a programme of pile testing that was completed in early January this year.

According to Aarsleff, the pile testing has enabled a technique pioneered in Europe to be used in the UK for the first time. The tests proved that use of the Centrum cage former for the precast concrete piles along with an “A Class” mechanical locking joint for the precast piles would meet the design specification for the work. Each pile cage also has a complex internal cage structure including tightly pitched helical and additional 40mm rebar to counter act the forces being applied to the piles from the overlying structure.

The scope of work at the Ditton site will see Aarsleff install 174 20m-long 350mm square section precast concrete piles for a new bridge at the site and at Victoria the 350 21m-long 350mm square section piles will support the approach viaduct for the Mersey Gateway bridge.