Skaethorn Bridge, situated in Maryhill, Glasgow, acted as both a pedestrian footbridge and a support for the main gas supply pipe for that area. The structure of the bridge was in such a poor condition that it became unsafe for pedestrians to use. A major refurbishment and strengthening programme was required to bring the bridge up to a standard that would comply with current legislation to support live gas lines.
When Millar Callaghan were awarded the strengthening works, a full survey was carried out to assess the strengthening required. Some of the existing structure was corroded to such an extent that the only option was to remove it completely and replace it with new sections. It was decided that additional strengthening angles would be attached to either side of the existing diagonal bracing on the bridge.
Each location was measured and a suitable angle cut for that location complete with holes. Prior to arriving on site all the new steelwork was shot-blasted and given a coat of primer. On site, the new angles were clamped back to back with the existing angles and the new holes were match marked through the new steelwork. All new steelwork was secured to the existing structure using tension controlled bolts. On completion the whole structure was given a four coat paint system to marine specification.
