Highland Council has approved a detailed assessment of the region’s bridges and road structures, confirming that several will enter “managed decline” unless additional investment becomes available.
The report, presented to the Economy and Infrastructure Committee on Thursday 13 November, sets out the condition of thousands of structures across the Highlands, from major river crossings to small culverts and retaining walls.
It reveals a network under growing pressure, shaped by ageing infrastructure, rising repair costs, and the stark reality of budget constraints.
Councillor Ken Gowans, Chair of the Committee, said maintaining safe and reliable connections remained a core responsibility of the Council.
He warned that limited resources meant tough decisions were now unavoidable.
“While funding challenges remain, these decisions ensure that resources are targeted where they are most needed to keep communities connected and safeguard essential routes,” he said.
Members endorsed a wide-ranging set of recommendations, including support for the current inspection regime, recognition of the risks posed by deteriorating structures, and approval of updates on major bridge schemes.
The report also confirms that some structures will inevitably move into “managed decline”, a status indicating that repairs are no longer affordable and closures are expected in the years ahead.
Spey Bridge at Cromdale and the Slochd Cottages Railway Bridge near Carrbridge are the first to enter this process.
Over the current five-year Capital Programme, running from 2024 to 2029, Highland Council has allocated £21.091 million for major bridge works, with a further £650,000 earmarked in 2025 to support culverts, retaining walls, and smaller structures.
Despite this, the scale of need is far greater.
The backlog of minor works sits above £10.5 million, while an eye-watering £102.5 million has been identified for major schemes still awaiting funding.
Several significant projects are already underway.
Construction of the new A836 Naver Bridge began in July 2024 and remains on track for completion in early 2026.
Emergency repairs at Infirmary Bridge have allowed it to reopen following a structural failure, though full refurbishment or replacement will require new funding.
Other priorities include preparatory works for repainting Bonar Bridge, remediation plans for Ness Bridge, and feasibility studies for a replacement crossing at Strathcarron.
To strengthen resilience, the Council will also invest up to £500,000 in replenishing its stock of emergency bridge components, a measure designed to reduce disruption in the event of unexpected failures.
Members agreed that future reports should provide updated lists of “lifeline bridges”, highlighting structures essential for isolated or single-access communities.
These will return to committee at the next meeting.
The report paints a picture of a region grappling with the realities of infrastructure ageing faster than funds can keep pace.
But it also reflects a clear effort to plan, prioritise, and protect the routes that keep the Highlands moving.
