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Evaluation of Mule Deer Crossing Structures in Nugget Canyon, Wyoming. Final Report.
| 题名： | Evaluation of Mule Deer Crossing Structures in Nugget Canyon, Wyoming. Final Report. |
| 关键词： | structure；evaluation；mule；report；final；ross；through；spring；department；igra |
| 摘要： | 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 U.S. Highway 30 in southwest Wyoming that passes through Nugget Canyon has been especially problematic because it bisects the winter range and migration route of a large mule deer herd. Through the 1990s, an average of 130 deer were killed each year. Accordingly, the Wyoming Department of Transportation (WYDOT) installed a series of 20 feet (w) x 10-11 feet (h) x 60 feet (l) concrete box culvert underpasses and gameproof fencing to funnel deer to the underpasses. The purpose of this study was to quantify the number of mule deer that used the underpasses, identify their seasonal and temporal movement patterns, and evaluate how effective the underpasses were at reducing deer-vehicle collisions. Through three years of monitoring, we documented 49,146 mule deer move through the underpasses. Peak movements during the fall migration occurred in mid-December, while peak spring movements were in mid-March and early-May. Most mule deer moved through underpasses during morning (0600-0800 hrs) and evening (1800-2000 hrs) periods. Deer-vehicle collisions were effectively reduced 81%, from 0.75 per month at each milepost to 0.14 per/month. |
| 报告类型： | 科技报告 |
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