Western Gateway Infrastructure Scheme (WGIS) – Highways
BWB Consulting, Cass Hayward
Western Gateway Infrastructure Scheme (WGIS) is part of a wider project to increase road network capacity and improve transport links over the Manchester Ship Canal to support regional development. Working in joint venture, HOCHTIEF built 2km of dual carriageway from the A57 to Bridgewater Circle, improved roundabouts at junctions 10 and 11 of the M60 and widened road sleading to the Trafford Centre. We also built two bridges on poor ground, including a 50m lifting bridge over the Manchester Ship Canal.
- 2km dual carriageway
- Road resurfacing/re-alignment
- Roundabout improvements
- 50m lifting bridge over Manchester Ship Canal
- Landscaping, new wetlands
- Utilities diversions
To minimise disruption during the reconfiguration of Bridgwater Circle roundabout – the main entrance to the Trafford Centre carrying up to 10,000 vehicles a day – we planned works around major local events and re-sequenced construction around Christmas shopping periods. We also completed disruptive works, including surfacing, at night or off peak to reduce congestion. 60% of our workforce was employed from Greater Manchester and we used local suppliers wherever possible to support the local economy.
Due to the high water table and risk of ground movement, we continuously monitored the foundations of the Barton Bridge (which carries the M60 over the canal) while we built the new road under it. We also safely excavated a deep section of dual carriageway cutting below the water table by developing a geosynthetic tanked solution that allowed the groundwater to circulate underneath, saving £385k.
Our alternative utilities diversions for the lifting bridge reduced risk and saved £1.6m, and we saved over £200k by reusing hard dig materials in the permanent works.