Evaulation of Mule Deer Crossing Structures in Nugget Canyon, Wyoming: FHWA-WY-11/02F
Wildlife-vehicle collisions pose a major safety concern to motorists and can be a significant source of mortality for wildlife. A 13-mile section of Highway 30 in southwest Wyoming has been especially problematic with an average of 130 mule deer killed each year.
WYDOT installed a total of seven underpasses along this area. Through three years of monitoring the study documented 49,146 mule deer moving through the underpasses. Overall, the construction of seven underpasses and game-proof fencing reduced deer-vehicle collisions by 81 percent.
The results suggest that underpasses, combined with game-proof fencing, can provide safe and effective movement corridors for mule deer and other wildlife species while improving highway safety for motorists.