Transport Scotland’s £1.94bn A9 dualling: design and phasing notes for engineers
Reviewed by Tom Sullivan
First reported on New Civil Engineer
30 Second Briefing
Transport Scotland has issued a £1.94bn contract notice for a multi‑lot delivery framework to dual the five remaining single‑carriageway sections of the A9 between Perth and Inverness, completing the roughly £4bn corridor upgrade. The framework will cover design and construction of new dual carriageway, associated structures and junctions, and online/offline widening through constrained Highland terrain. Contractors will need to manage complex phasing, traffic management on a live trunk road, and geotechnical risks linked to variable glacial deposits and peat.
Technical Brief
- Contract notice value is £1.94bn, procured as a multi‑lot delivery framework rather than single EPC.
- Framework covers five discrete work packages, enabling parallel design–build mobilisation by multiple tier‑one contractors.
- Transport Scotland is client and contracting authority, using a centralised framework to standardise specifications and interfaces.
- Procurement route allows subsequent call‑off contracts, giving flexibility to phase sections against funding and statutory approvals.
- Lotting strategy is expected to differentiate online widening, offline realignments and structures‑heavy sections.
- Long‑term framework set‑up favours alliances or joint ventures with established Scottish trunk‑road delivery experience.
- Bidders will need to demonstrate capability in NEC‑style collaborative contracting, risk‑sharing and cost‑reimbursable mechanisms.
Our Take
Transport Scotland’s £1.94bn framework will generate a substantial volume of digital asset data, and the recurring New Civil Engineer webinar coverage on BIM and ‘data handover gaps’ suggests that information management and handover protocols could be a differentiator in winning and delivering these lots.
Among recent UK Infrastructure pieces in our coverage, few single-road schemes approach this scale, so contractors that secure places on the A9 framework are likely to gain a long-term workload anchor that can support regional supply chains and plant utilisation in Scotland through the late 2020s.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
