Wildlife Conservation

Wild Otter: Road Mortality and Mitigation

Road mortality is now the primary cause of adult otter death in many UK river catchments. Targeted infrastructure interventions can significantly reduce road casualties.

Key Facts

Road deaths account for a significant proportion of UK otter mortality as populations expand
Otters crossing roads at culverts and bridges represent the highest risk locations
Otter-friendly culvert design including dry ledges allows passage without road crossing
Fencing to guide otters toward safe crossing points reduces road mortality at known hotspots
Night-time driving at low speeds near watercourses reduces collision frequency during peak otter activity

Welfare Considerations

Road mortality causes traumatic death for a species whose population is still recovering from near-extinction. Targeted infrastructure interventions at high-risk road crossing sites offer a direct, measurable welfare improvement.

What You Can Do

Support Highways England and local authority investment in otter-friendly culvert design
Report otter road casualties to local wildlife trusts to support mortality hotspot mapping
Drive carefully near watercourses at night when otters are most active