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Manchester Airport Relief Road (MARR) bridge installation, UK




ALE has successfully installed a new rail underbridge (BEJ/11B, B002) as part of the A6 Manchester Airport Relief Road (MARR) scheme in Stockport, UK.


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The planned route for the new road intersects the Hazel Grove to Buxton railway line and therefore a new bridge installation was required to allow the new road to be built.


The new bridge weighed approximately 1,950t, which included two new concrete cills, the steel deck, ballast and the temporary works.


ALE supplied 64 axle lines of SPMT in a 2 x 4 file 16 configuration with additional steelwork packing to support the main girders in four locations during the move. The SPMTs were rigged beforehand and positioned underneath the bridge. A trial lift was carried out prior to the main possession and the bridge moved away from where the excavation works were to be carried out.


ALE were contracted to carry out the installation of the new bridge and ensure the bridge lined up over newly formed pile caps. There were 32 number macalloy bars (8 number bars in each of the bridge corners) to line up on the pile caps. The bars were threaded through the cill beam by the client as ALE lined up the bridge over the pile caps.


ALE completed the bridge installation works in approximately three and a half hours.

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