Please find below copies of and links to several studies that have found that ecopassages are effective in helping to reduce road mortality by turtles, snakes and frogs when combined with barrier fencing that prevent animals from moving onto the roadway and directs them toward the ecopassages. This system of fencing and ecopassages has been installed on the Long Point Causeway.

• Wildlife use of culverts in Maryland
• Use of underpass by wildlife in Australia
• Spotted turtle use of culverts
• Effective Culvert Placement and Design to Facilitate Passage of
  Amphibians across Roads
• Highway mortality of turtles and other herpetofauna at Lake Jackson, Florida, USA, and the
  efficacy of a temporary fence/culvert system to reduce roadkills
• Effects of roads on wildlife
• Effectiveness of a barrier wall and culverts in reducing wildlife mortality on a heavily traveled highway in Florida
  
• Mitigation measures to reduce highway mortality of turtles and other herpetofauna at a north Florida lake
  
• Blanding turtles’s use of culverts
• Wildlife and transportation resource centres
• Wildlife and Roads: Decision Guide
• The Lake Jackson Ecopassage
• How Did the Box Turtle Cross the Road? With a Wildlife Crossing
• Cyprus Lake Road Pre-Mitigation Assessment, Final Report
• Blanding’s turtle used culverts in an Ottawa area study