Approximately 70 km east of Québec City (Canada), highway Route 138 passes through the municipalities of Saint-Tite-des-Caps and Petite-Rivière-Saint-François. This region includes prime habitat for moose (Alces americanus), and several moose-vehicle collisions occur there annually. In an attempt to improve road safety, the provincial ministry responsible for transport, the ministère des Transports du Québec (MTQ), monitored moose tracks and identified those areas where moose-vehicle collisions occurred. In 2007, ungulate exclusion fences were erected to secure the most problematical 6.3 km section of road. However, over the following years, the number of moose-vehicle collisions outside the fenced section increased significantly. In 2014, the MTQ extended the fences in both directions, modified their ends, and built 2 underpasses for large wildlife. Although the latter had lower openness ratios than those suggested in the literature, the MTQ hypothesized that moose would still use them. Since then, there has been an important reduction in the number of moose-vehicle collisions along this section of road, and moose regularly use the underpasses.