Overpasses and underpasses for migrating animals may reduce collisions with automobiles May 16, 2016 Wyoming,

Wyoming Deer and Transportation, News and Information Archive 



... 6 underpasses and 2 overpasses  ... 79% of mule deer moved under, whereas 93% of pronghorn moved over ... Wildlife-vehicle collisions were reduced by 81% ...

Study shows wildlife over and underpasses prevent about 70 accidents a year May19, 2016 Wyoming, Casper Star-Tribune Online
... Deer and pronghorn have, likely for millennia, traveled between winter and summer ranges over an area now split by Highway 191. Fences used to line the highway to prevent cattle from crossing, but wildlife inevitably moved over or under the wires and onto the highways. Now they are funneled by tall fencing to one of two overpasses or six underpasses...

Pronghorn and mule deer use of underpasses and overpasses along US Highway 191  H Sawyer, PA Rodgers, T Hart - Wildlife Society Bulletin, 2016 Wyoming
... Of those highway crossings, 79% of mule deer moved under, whereas 93% of pronghorn moved over the highway ... we documented a 64–306% increase in the amount of back-and-forth movement of mule deer and pronghorn across the highway during migration periods. Such movement flexibility is presumed to improve their ability to respond to changing environmental conditions by easily accessing habitats on either side of the highway....

These articles have been reviewed for relevance and content.  Some links to the original article may no longer be active.

Related News and Information