Publication - Progress report
Infrastructure Investment Plan 2021-22 to 2025-26: major capital projects progress update - August 2025
Information relating to projects with a capital value of £5 million or more which are at the outline business case (or equivalent) approved stage or beyond.
Summary of changes note
This note summarises key points and changes within the report since the February 2025 progress update.
Projects included within the report for the first time
- A9 Dualling: Pitlochry to Killiecrankie
Projects no longer included within the report
The following project was reported as being completed or operational within the last progress update and is therefore now no longer included:
- NHS Greater Glasgow and Clyde - North East Hub
Projects where business case has been paused
The following Health projects in development were reported within the December 2023 progress update as having their business cases paused and will not be reported on further until the necessary capital funding to complete them becomes available:
- NHS Grampian – National Treatment Centre
- NHS Lothian - National Treatment Centre
- NHS Ayrshire & Arran - National Treatment Centre - Ayrshire & Arran
- NHS Tayside - Ninewells Electrical Infrastructure Zone 3
Notable events relating to projects within the report since last update
- A9 Dualling Tay Crossing to Ballinluig - The construction contract for the fourth section of the A9 Dualling Programme was awarded in July and marked the achievement of another delivery milestone programme. When completed, 45% of the A9 between Perth and Inverness will be dualled, contributing to a safer, more resilient route for road users.
- A9 Dualling: Pitlochry to Killiecrankie - The procurement process formally commenced in July for the fifth section of the A9 Dualling programme with the publication of the contract notice. When completed, this will develop and upgrade active travel routes in the area, making them safer and more enjoyable for the local community and tourists.
- Markle Level Crossing Bridge Replacement - The crossing near East Linton was officially replaced by a new bridge and diversionary road, which opened to traffic in July. Project addressed safety concerns, particularly with advent of new East Linton station and new infrastructure, which also includes an improved access road for Markle Fisheries, which significantly enhances road safety by removing the level crossing and eliminating delays caused by passing trains.
- Borders Railway Decarbonisation and Fife Decarbonisation - As first reported within March 2023 update, both projects were to be replanned. The FBC’s to progress both projects have now been approved and these will be used as the baseline for these projects going forward.
- RBGE - Edinburgh Biomes - The ambitious restoration of the Victorian Palm Houses which completed in September, will protect global plant science and conservation, ensuring the future of these A-listed historic structures and the precious plants that they house.