Mandatory suicide prevention in UK road design: key points for engineers
Reviewed by Tom Sullivan

First reported on New Civil Engineer
30 Second Briefing
Suicide prevention assessments will become mandatory for certain UK road infrastructure designs under new guidance led by National Highways and the UK Roads Leadership Group (UKRLG), claimed to be the first such requirement in Europe. The assessment will apply at design stage to features such as overbridges, high retaining walls and roadside structures where fall risks and access to live traffic are significant. Designers will need to integrate physical measures like higher parapets, anti-climb detailing and controlled access points, with implications for structural detailing, whole-life maintenance and scheme cost–benefit cases.
Technical Brief
- Scope is limited to “some road infrastructure designs”, so asset owners must screen schemes for applicability.
Our Take
National Highways has featured heavily in recent UK Policy coverage, with our database showing it across drainage standards, hydrogen-powered construction and major junction upgrades, so embedding suicide prevention into design guidance is likely to cascade quickly into a wide range of live schemes.
On large projects such as the M3 Junction 9 upgrade and the Lower Thames Crossing, mandatory suicide risk assessments will probably influence bridge parapet design, access control and maintenance regimes, adding another safety-driven constraint alongside runoff, embankment stability and carbon objectives.
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.


