Site Challenge
With three planes and sweeping curves, the geometry of a new embankment for Bodmin's A30 Bypass required meticulous attention to detail.
It was realised early on that the A30 crosses a valley at Holywell, this realisation changed the design from a viaduct to a high embankment would save millions of pounds. To a certain extent this was because there were to be areas of cut at either end of the site that would provide sufficient stone fill for the embankment.
A reinforced soil slope was chosen to minimise land take and reduce fill volumes. Huesker supplied the project with 50,000m² of Fortrac Geogrid erosion mesh for the inside of the front faces. At 22m high this structure is without doubt the largest reinforced soil slope in the UK supporting a dual carriageway. |