Otter Welfare: Road Mortality and Mitigation

Key Welfare Facts

Otter road mortality is a leading cause of death in recovering UK populations, particularly in young dispersing animals.
Animals crossing roads near water are struck most commonly at poorly designed culvert and bridge crossing points.
Otter holts under bridges are used for resting, creating repeated road crossing hazard during regular movements.
Dry ledges installed in bridges and culverts allow otters to pass underneath roads without entering traffic.
Underpasses designed to otter specifications dramatically reduce crossing incidents at monitored locations.
Collisions cause traumatic injury, internal haemorrhage, and slow painful death in animals that survive impact.

Welfare Assessment

Otter road mortality is preventable through targeted infrastructure improvements at key river crossings. Supporting campaigns for otter-friendly bridge and culvert design, and reporting road casualties promptly to enable individual animal care, are the most direct welfare actions available.

What You Can Do

Support installation of otter ledges and dry passages at river crossing points
Report any road casualty otter to local wildlife rehabilitators immediately
Drive carefully near rivers and water bodies, especially at dawn and dusk
Advocate for otter-safe design requirements in bridge and culvert planning guidance