N22 Macroom Footbridge
This challenging project involved the installation of a steel footbridge onto the existing, 70m long nine arch, designated national monument road bridge, dating from approximately 1800 and carrying the N22 (Cork – Killarney)
Client
Cork County Council
Consultant
Roughan & O'Donovan Consulting Engineers
Location
Macroom, Co. Cork
JCL were awarded this contract by Cork County Council through National Roads Design Office in Glanmire. This technically and operationally challenging project included the following
Key Features
- Full off site construction of steel footbridge, requiring substantial quality assurance process to be enacted – included architectural balustrading with in-built LED lighting – lifted into place using a 200T crane at night with road closure in operation
- Design and installation of major temporary works which were installed in the river and from which heavy civils works had to be carried out
- Substantial piling works to new abutments on either side of the river
- Installation of complex ground anchors through the existing bridge, into which the new footbridge was connected – this required the removal of stones at each of the 18 locations, construction of concrete pads and installation of the anchors, working from the scaffolding, all while maintaining live traffic (AADT of 11,000 with 11% HGV)
- Major in river works with the careful removal of all stones at each cutwater, construction of substantial reinforced concrete element to support the new footbridge and reinstatement of the cutwater stones to their original location and layout
- Refurbishment of existing masonry with de-vegetation and repointing
- Upgrade works to the existing live road, parapet walls, and services
- Substantial third party liaison with Heritage, Irish Parks & Wildlife, Inland Fisheries Ireland
- Shortlisted for the CECA Excellence in Civil Engineering Awards (<€2m category)