Carmarthenshire County Council faces a £77.1 million backlog in carriageway maintenance, according to its 2025 highways report. This figure represents the estimated cost to bring the council’s road surfaces back to standard.
Separate analysis from Audit Wales shows the council’s real-terms funding for highways and roads has dropped by 40% since 2008–09. The funding decline restricts the council’s ability to maintain the network sustainably and cost-effectively.
Backlog reflects carriageways, not whole highway network
The £77.1 million backlog specifically covers carriageway maintenance. It excludes other highway assets such as bridges, drainage, street lighting and footways. This distinction is important for understanding the scale and scope of maintenance challenges.
Reactive maintenance replaces preventative approach
Audit Wales reports that reduced funding has forced Carmarthenshire to adopt a risk-based, reactive maintenance approach. Preventative treatments now form a smaller part of the strategy. The council has prioritised classified roads, which are main routes, but unclassified roads—nearly half the network—have seen declining conditions.
The review notes a sharp rise in reported potholes, with a 456% increase between 2020 and 2024. This reflects increasing pressure on the road network and delayed repairs.
Preventative versus reactive repairs: impact on roads and drivers
Preventative maintenance extends the life of the carriageway by renewing larger sections before significant deterioration. Reactive repairs usually involve localised patching of specific defects. While patching can address immediate hazards, it is often more costly over time as defects worsen if left untreated.
Funding gap hinders network maintenance
The 2025 highways report set a minimum annual requirement of £8 million to maintain current road conditions. However, capital investment plans for 2025/26 and 2026/27 total just under £9.5 million—about £6.5 million less than needed over two years.
This shortfall means planned work falls behind what is required to stop the network deteriorating, increasing the maintenance backlog. Councils must assess condition and risk to prioritise where and when repairs happen.
Long-term outlook requires strategic planning
Audit Wales warns that Carmarthenshire’s reactive approach is not sustainable. Continued funding constraints could worsen road conditions and raise repair costs. The contrast with recent strategic resurfacing on South Wales’ M4 shows the benefits of planned programmes for preventing costly deterioration.
Together, the £77.1 million backlog and 40% funding reduction illustrate why Audit Wales urges clearer, longer-term network management for Carmarthenshire. Individual repairs address immediate needs but sit within the wider challenge of preserving the network with limited resources.
