The UK Roads Leadership Group (UKRLG) published an updated Well-managed Highway Infrastructure Code of Practice on 14 October 2026. The revision maintains the risk-based approach introduced in 2016 and adds a new section on tunnels.
Five parts, including tunnels
The refreshed code breaks down into five parts. One part covers overarching principles. The remaining four address highways, structures, lighting and tunnels.
Tunnels are the new asset category added to the guidance. They had not featured in previous editions of the code. The update reflects increasing attention to tunnel inspection and maintenance within UK infrastructure.
How it works
The code guides highway authorities on governance, planning, risk management, inspections, maintenance and performance monitoring. It encourages a consistent, evidence-based approach to managing assets.
Each authority assesses its own risks and sets levels of service that fit local needs and budgets. There are no fixed national rules prescribing inspection frequencies or maintenance standards.
This risk-based framework means councils explain and justify their approaches rather than follow rigid, one-size-fits-all directives.
Where it fits in UK highway management
The 2016 code replaced three separate guides with a single document covering highways, lighting and structures. The 2026 update keeps that integration and adds tunnels.
The review was led by the Department for Transport, supported by AtkinsRéalis, and included input from UKRLG boards, devolved administrations and national stakeholders. The Chartered Institution of Highways & Transportation (CIHT) helped develop the new tunnels section.
What it changes for authorities
The code keeps its flexible framework. Councils do not receive fixed instructions but must set their own inspection and maintenance regimes based on risk.
For example, West Sussex is trialling AI cameras on inspection vehicles to improve data collection.
CIHT plans to support the code with workshops, a digital platform and guides aimed at elected members and non-technical audiences. These resources will help authorities apply the guidance consistently.
This update is the first phase in a wider UKRLG programme. A second phase will consider related asset management guidance, with priorities shaped by sector needs and available funding.
Next steps
Workshop dates have not been published yet. The full code is available on the UKRLG website’s Code of Practice page.
