Contractors World
 

The UK & Ireland's leading magazine for construction,
demolition, mining and quarrying industries
 
Contractors World - 2014 Vol 4 No 5

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CRL completes complex bridge repair over the M6 Motorway

RMD Kwikform devised a novel temporary works design, - minimising the number of night possession required to install the temporary works access across the 48m long bridge.A bridge that was constructed in 1962 carries Ash Flats Lane over one of the busiest sections of M6 motorway in the UK, between junctions 13 and 14 in Staffordshire.

The Highways Agency decided the current vehicle safety barrier was no longer adequate and needed to be upgraded to current loading standards, requiring the bridge edge beam to be reconstructed to accommodate the loadings from the new barrier system.

As only limited temporary lane closures at night were permitted to install the temporary works, Concrete Repairs Ltd in conjunction with RMD Kwikform devised a novel temporary works design, - minimising the number of night possession required to install the temporary works access across the 48 m long bridge.

All of the road mounted frames were preassembled on the closed Ash Flats Lane and then attached to the existing bridge deck with the kentledge in place. The over slung modular sections were fabricated on the hard shoulder of the M6 and then lifted into place in one piece during night time closures and attached to the road mounted frames.

CRL then enclosed the cantilevered access gantries with a double layer of plywood, sealed the joints with a silicone sealant and applied a final layer of roofing felt bonded to the plywood to form a near watertight enclosure. This frame enabled all the work required to the edge beam to then proceed without further road closures.

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