The Scope involves the dualling of approximately four miles (6.4km) of existing single carriageway on the A9 trunk road between Pitlochry and Killiecrankie.  This consists of approximately 4km of online widening and approximately 2km of offline construction. The new/upgraded carriageway will be to Dual 2 lane All-purpose roads Sub-category c (D2APc) standard, in accordance with ‘CD 109 Highway Link Design’ within the UK Design Manual for Roads and Bridges. The project also includes (but is not limited to) construction of two grade separated junctions, construction of two left-in left-out junctions, construction of two major underbridges, demolition and replacement of three existing underbridges, an extension of one existing rail underbridge and construction of one new rail underbridge, provision of five other new underbridges/underpasses, six new retaining walls and fifteen culverts. Additionally, the project involves maintenance works at the existing Tummel underbridge, provision of traffic management, earthworks, road restraint systems, accommodation works, service diversions, fencing, signage, landscaping and environmental mitigation.