FP McCann’s bridge beams used in Bridge Replacement Project for Network Rail in Aylesbury.

Project: A41 Rail Bridge Replacement at Aylesbury Vale

Client: Network Rail

Main Installation Contractor: MPB Structures Limited

Products Supplied: 130t main deck beam and two cill beams.

The replacement of a Network Rail bridge crossing the main A41 adjacent to Aylesbury Vale station on the Aylesbury to Bicester section took place over the weekend of 6-8 February.

The complete span was precast by our Toomebridge depot and shipped as a three-component load consisting of 130t main deck beam and two cill beams, by sea from Warrenpoint to Heysham and then by road to site.

The base was cast first on a 12t steel cage, with projecting rebar protruding. Then the two upstand walls were provided as secondary casts to the main unit. In the site compound, the cill beams were fixed to the deck via a series of cast in bolts and props, with the steel walkways then installed to the deck unit walls.

Following removal of the old steel bridge structure during daylight hours of the weekend rail possession, the new structure was installed in the early hours of Sunday using a 32 wheel elevated crawler to transport it the short distance from the compound to the site as a single component.

Actual installation was without hitch and seemed to take place in moments.

The square span, face to face of abutment is 9.055m; the skew span from cill bearings is 14.55m; the skew angle of the bridge is 45 degrees.

For further information on FP McCann’s bespoke bridge solutions, contact TOOMEBRIDGE DEPOT 028 7965 0471 | sales@fpmccann.co.uk