New bascule lifting bridge in Warrington.

In 2013 KGAL was appointed by AMCO to provide a detailed design for a new bascule bridge over the disused St Helen’s Canal, replacing the existing static bridge and providing access to the Riverside Trading Estate and the marina at Fiddler’s Ferry. Earlier this year the new bridge, actuated by a pair of hydraulic cylinders, lifted for the first time.

Marsh House laneKGAL’s responsibilities included producing the Approval in Principle document, full structural design of the bridge deck and lifting arms, mechanical design and purchase specification for the actuation machinery, preliminary hydraulic design and the purchase specification for the hydraulic equipment (lifting cylinders, pump etc.), electrical specification for the control system and traffic control system, and the manufacturing specification for the steel fabrication.

Due to the location of the works, the project has required continuous liaison between AMCO (the Principal Contractor for the project), Network Rail, National Grid, adjacent businesses and members of the public. The construction works were in close proximity of an operational railway and level crossing and so required careful planning to avoid affecting train movements whilst also informing businesses and the public of road closures and access restrictions at key times.

A key priority of the' Linking the Locks' project, funded by the Coastal Communities Fund, was to safeguard businesses and jobs located in this area by improving access to the trading estate following the collapse of the original access bridge in September 2013. The new bascule bridge replaces the temporary steel bridge that was installed by Warrington Borough Council in October 2013.

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