jackfield scoops two trophies


McPhillips’ £9m Jackfield Stabilisation scheme located in the Ironbridge Gorge took two prestigious trophies at the Institution of Civil Engineers West Midlands Region 2017 awards held at Birmingham's ICC on 17th May.

Alongside our project partners, designer Jacobs and client Telford & Wrekin Council, we were delighted to see the project take the 'Best Geotechnical Scheme' and 'Best Overall Scheme' prizes at the ceremony which recognises excellence and innovation in civil engineering across the region.

The historic Jackfield slip is a large area of steep hillside that had been continually slipping into the River Severn and affecting the daily lives of locals since the 1700s. There is only one road into the community and since 1982 this has been overlaid with timber boards to allow easier maintenance.
The objective of this technically demanding and complex project was to primarily stabilise a 300m length of moving hillside.
The permanent works involved the installation of 2200 no. CFA piles around 12m long in 9 rows across the hillside. These were designed, using a method designed by renowned Neapolitan civil engineer Carlo Viggiani, to penetrate just past the slip plane approximately 7m down and to mobilise passive resistance against further movement.
The risk of a spontaneous landslip into the river causing a blockage and upstream flooding has been eliminated and the stabilisation has also allowed for improvement of transport links back into the area with a new road.