Autumn/winter 2023
Highway construction works
Late summer to autumn
Retaining wall parapet works
Early summer to autumn
Secure existing wall/drainage works
April 2023
Removal of asbestos from collapsed embankment
Removal of non-asbestos containing material from the collapse
Installation of temporary works, including concrete kentledge support blocks
March 2023
Established the site welfare and offices
Undertaken Stage one of site clearance
Removed existing carriageway material in the collapse
Created a widened two-way access into Cosgrove Business Park to facilitate the additional space required for the new retaining wall construction
Vacuum excavation around existing services
February 2023
Council Cabinet Paper decision and approval
November 2022
BT to attend site to divert their cabling
Contractor to obtain prices for the repair work required from their supply chain
Contractor to submit confirmed costings to the Council
October 2022
Completion of calculations and drawings for repair works by consultant engineers
September 2022
United Utilities - cast iron water main diverted
Scottish Power on site diverting live voltage cabling
Geotechnical engineers complete report showing analysis of ground investigations
July 2022
Signed contract with contractor to develop detailed solutions and costings to repair the landslip
Commissioned consultant engineers to design repair options
Weekly meetings with both contractors begin
June 2022
Ground investigation works - bore holes drilled to a depth of 20 metres to find out what material is underneath the site
May 2022
Liaison with utility companies to ascertain prices for diverting cables and piping to allow repairs to progress
Ground penetrating radar surveys undertaken to determine the exact locations of all utilities on the site
April 2022
Anchor blocks installed at either side of the collapsed section to create a temporary cable bridge for high voltage cables
Cranes remove large concrete slabs that were previously either side of the collapsed section
March 2022
Propped adjacent building for safety reasons
Contractor commissioned to produce a feasibility report for the repairs
December 2021
Landslip occurred on 28 December 2021 - road closed and signage erected
3D laser scans of the landslip and adjacent building completed
