Vicars Hall Bridge Replacement

Vicars Hall Bridge Replacement

Following annual monitoring by Wardell Armstrong’s Structural Engineers, the bridge was deemed inadequate for use for traffic, as a result of significant coal mining subsidence in the area and deteriorating previous repairs. Wardell Armstrong were commissioned to provide a design for a replacement for Vicars Hall Bridge, which crosses the Bridgewater Canal between Boothstown and Worsley, Greater Manchester. Additionally, Wardell Armstrong were instructed to produce tender documentation, manage the contract and supervise the works. To allow access to the site and for future use for an adjacent housing development, the construction of a haul road connecting the A580 and the bridge site was required. AECOM had previously undertaken the design for the temporary haul road and Wardell Armstrong were commissioned to project manage and supervise the construction. An NEC ECC Option B was produced for both the temporary haul road and the bridge replacement, allowing a single contractor to be appointed for the works. Wardell Armstrong managed the tender process, resulting in the appointment of Harry Fairclough Construction as the Principal Contractor for the whole works.

The temporary haul road included watercourse crossings and therefore required Wardell Armstrong input, alongside the Principal Contractor, to get a Permit from the Environment Agency. To allow for access and safe construction, the Bridgewater Canal was closed for the majority of the works and a stone dam was constructed to the west of the bridge to enable construction access to both sides of the canal. The existing Vicars Hall Bridge and associated abutments and foundations were demolished and removed from site. In total 86 No. CFA piles were installed to support the loads from the new reinforced concrete abutments and wingwalls. Pre-cast, pre-stressed, reinforced concrete bridge beams and parapets were installed onto the abutments and supported on elastomeric bridge bearings. Following completion of the reinforced concrete deck, parapets, wingwalls and abutments, facing brickwork and stone copers were installed to give the final finish. New approach embankments were constructed with a surfaced single lane road and footpath. A restraint barrier was installed along the length of the embankments.