An alleviation scheme was developed and subsequently implemented in two phases. The works were carried during the winter months when water levels were naturally high and at times flooded onto the working area.

Sheet piling was installed for a large proportion of the work, but could not be used in the vicinity of trees due to height restrictions and damage to root network. Foundation Piling were employed to install a series of bored piles with limited headroom and separately a row of piles as a continuation of the sheet piling up to the main road bridge. All the piles were then topped with a capping beam used to form the foundation for a flood defence wall approximately 1.8m high.

A detailed survey of the tree root network had been carried out so that pile boring did not cut them and cause damage. This meant that piles became irregularly spaced and sometimes moved to avoid such obstructions. Handling of augers, casing and reinforcement cages all had to be considered on a day-to-day basis as pedestrian access had to be maintained at all times to the adjoining properties. Due to the proximity of the river considerable care had to be taken when concreting to prevent any environmental issues with material contaminating the water course. This required tanking and barriers to be installed between piles and the river. The narrow roads also dictated the type of piling rig and auxiliary equipment that could be used.

Despite the inclement weather and access restrictions, the piles were installed and tested to enable the wall construction to proceed as scheduled.

Final landscaping completed the works by creating additional parking spaces, footpaths and recreational areas.