Reptiles

Freshwater Turtle Road Mortality: Crossing Roads to Breed

Freshwater turtles cross roads to reach nesting sites annually; vehicle strikes during these crossings cause mortality in breeding females.

Key Facts

Female turtles travel overland to reach nesting sites, often crossing roads
Adult female mortality disproportionately affects turtle population dynamics given slow maturation
Painted turtles and snapping turtles are among the most frequently road-killed turtle species
Wildlife culverts and turtle underpasses have been shown to reduce road mortality effectively
Climate change is altering nesting timing, increasing the duration of road exposure

Welfare Considerations

Turtles struck by vehicles experience crushing trauma, shell fractures, and internal injuries. Survivors of vehicle strikes often reach rehabilitation centers with complex injuries requiring months of treatment. The loss of reproductively mature females from populations is disproportionately damaging as turtles take 10-20 years to reach sexual maturity. Road mortality is preventable with infrastructure modifications and driver awareness.

What You Can Do

Slow down when driving in turtle nesting season near wetlands (May-July in North America)
Help turtles cross roads safely by moving them in the direction they were heading
Advocate for turtle crossing signs and underpasses on high-mortality road sections
Report freshwater turtle road strikes to your state wildlife agency for mortality mapping
Donate to freshwater turtle conservation and road ecology research programs