Bridges

Keighley

A new Railway bridge was required to replace the old River Worth Bridge at Keighley. The new bridge was constructed to the side of the existing bridge for it to slide in place following demolition of the old bridge.

In order to accommodate the new bridge in the same position as the old, new foundations were required to be installed, underneath the existing bridge, whilst the existing bridge was in place.

Martello Piling used their MP4000 series rig, working in just 3.1m of headroom, to install 600mm diameter piles, to depths of up to 13m with a 3.0m rock socket into sandstone.

Barnham Bridge

The piles installed at Barnham Bridge were for a widening of the existing rail overbridge to enable a loop line just outside Barnham Railway Station. Piles of 600mm diameter were constructed for a king post retaining wall to support the existing bridge wing walls and embankment. Following installation of the king post wall and excavating ,the second phase involved construction of 600m diameter heavily reinforced bearing piles for the bridge abutments. The piles were founded in very had siltstone and owing to the presence of ground water required temie-ing techniques to construct.

The works were carried out in a very restricted site area immediately adjacent to the live railway. The works were co-ordinated in conjunction with the main contractor in a number of discreet phases to enable the busy but narrow road to be traffic light controlled and to also allow the safe passage of pedestrians to and from the town and the local school.