Thank you for your patience while we retrieve your images.


14 of 171 photos
Thumbnails
Info
Categories & Keywords

Category:People
Subcategory:Professions
Subcategory Detail:
Keywords:barrier, barriers, fence, culvert, underpass, "box culvert", "Nerodia sipedon", "water snake", "northern water snake", "Chelydra serpentina", "snapping turtle", "common snapping turtle", "Chrysemys picta", "painted turtle", turtles, roadkill, roadkilled, mitigation measures, "road ecology", highway, highways
Photo Info

Dimensions5685 x 3789
Original file size11 MB
Image typeJPEG
James Baxter-Gilbert and David at turtle underpass, Hwy 69, Ontario, Canada

James Baxter-Gilbert and David at turtle underpass, Hwy 69, Ontario, Canada

James Baxter-Gilbert and David at turtle underpass, Hwy 69, Ontario, Canada. The turle underpass is 2.4 m wide and 2.1 m high. There are seperate structures for the two travel directions with a fenced opening (15.3 m) in the median. Painted turtle, snapping turtle and northern water snake have been documented using this type of structure along Hwy 69. The large mammal fence is 2.3 m high. Geotextile fabric (black) is attached to the large mammal fence for reptiles and amphibians. The fabric is 0.8 m above the ground and 0.2 m below the ground. A 0.1 m wide strip below the ground is oriented away from the road to reduce the probability that animals dig under the fabric. The underpass (box culvert) is believed to be suitable for turtles and snakes, but the geotextile fabric has gaps resulting from installation errors, erosion and flooding. A sturdier barrier (concrete/steel/hard plastic) with reduced maintenance and better oversight during installation is recomended.