Demolition of existing culvert and bridge and replacement with a single span pre-cast concrete box structure and reinforced concrete retaining walls, along with localised road widening and realignment on the A9 trunk road network.
Project Overview
Works comprised the demolition of existing twin culverts and masonry arch bridge, and the design and installation of a single span pre-cast concrete box structure and reinforced concrete in-situ retaining walls with waterproofing. The project included localised road widening and realignment on the A9 trunk road network, which is in close proximity to the Inverness to Wick railway line. This entailed work being carried out over an environmentally sensitive watercourse whilst maintaining full traffic at all times on the A9.
The scope of works also involved the formation of associated earthworks and embankments, provision of new drainage, ducting and vehicle restraint system, carriageway widening and resurfacing, white lining and signage, installation of fencing and accommodation works, and the reinstatement of surrounding land.
Due to the location of the site, various environmental mitigation measures were implemented and strictly managed throughout the duration of the project.
Key Features
- Design and build of a pre-cast concrete box structure - 4.5 x 2.5 skewed
- Reinforced concrete walls and parapets
- Temporary works within railway support zone
- Environmental mitigation measures including CAR and Otter license requirements
- Two phased temporary traffic management design - north and southbound
Project Team
Client:Transport Scotland
Structural Engineer:
BEAR Scotland
Project Details
Contract Value:€3 Million
Floor Area:
0.25 km Single Carriageway Truck Road
Duration:
9 months