Nostell Bridge Burr Wall Repairs

Description

The Nostell Bridge southwest masonry burr wall was subject to impact damage from an errant vehicle resulting in the damage at the location of a feature buttress. The damaged wall has since been made safe and traffic management was installed on the A638 to keep traffic away from the unprotected carriageway edge (single lane running with traffic lights). The damage revealed that the feature buttress was hollow with rubble infill to approximately carriageway level. Due to extensive cracking and displacement, the brickwork was carefully dismantled to ground level behind the wall to make safe and reclaim the bricks and stone copings for re-use. The works required to repair the Nostell Bridge Burr Wall include: • Traffic management • Partial dismantling of the existing brickwork • Temporary access track to the back side of the wall (earthworks) • Site clearance (vegetation) • Excavation and underpinning existing structure for temporary stabilty • Piled foundations (contractor designed, possible additional GI required) • Reinforced concrete pile cap, buttresses and cross beams • Reconstruction of brickwork parapet using salvaged bricks • Reconstruction of feature buttress using salvaged bricks and sourcing new bricks as required, recreating the original buttress as best as possible • Reinstate salvaged coping stones with new precast concrete lintel supports • Excavate and reinstate existing highway drainage

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