Roads can have large impacts on wildlife, ranging from habitat fragmentation and vehicle collisions to disturbance from vehicle noise. Wildlife crossings can help reduce these impacts by providing safe passage for wildlife below the road surface. However, wildlife crossings are not used by all species equally. Many factors influence crossing use, including the level of human disturbance (i.e., vehicle traffic, human activity, infrastructure development, noise pollution, and light pollution), local environmental conditions (i.e., landcover, vegetation density, and microclimate), and crossing structural characteristics (i.e., size, substrate, and hydrology). While it is known that individual species respond differently to different environmental factors, how crossing characteristics affect the species community is relatively understudied. Understanding the community-level response to crossings can help researchers understand how they could benefit rare or endangered species that may not be detected at wildlife crossings during the relatively short period that crossings are often monitored. In South Texas, wildlife crossings are being constructed for ocelots, a medium-sized felid that is endangered in the United States and found only in South Texas. Wildlife crossing construction on Farm-to-Market 1847 was completed in September 2022. We set up camera traps at these crossing locations starting in January 2022 while construction was still underway to monitor how the mammal community interacts with wildlife crossings and how these interactions change over time. While monitoring of crossings is still in the early stages, we have detected bobcat, coyote, opossum, raccoon, armadillo, and eastern cottontail using wildlife crossings, with more bobcat coyote, and cottontail at more rural crossings and more opossum, raccoon, and armadillo at more urban crossings. A more diverse mammal community seems to be associated with lower traffic volume, a greater proportion of natural land cover, the presence of water at crossings, and lower human activity. However, we expect these factors affecting crossing use to change over time. This research will help inform the Texas Department of Transportation as to which crossing designs best support the most mammal species, and therefore are likely to support rare and endangered species.