Transportation infrastructure facilitates the accessibility and mobility of goods, people, and services through its vast network spanning across the USA. The departments of transportation (DOT) agencies face many challenges in monitoring and maintaining these infrastructure assets for continuing their service and operations, especially those located adjacent to slopes in rural and remote areas. Mobilizing and conducting traditional infrastructure inspections in those conditions can be laborious and time-consuming. Also, the unstable or highly weathered rock slopes pose significant rockfall hazards due to the moisture content, intrusion, and temperature changes, transpired over a period of time, causing weathering and rockfalls, ultimately resulting in debris accumulation. Recently, unmanned aerial vehicles (UAVs) in conjunction with close-range photogrammetry techniques are being researched and used ubiquitously for infrastructure monitoring applications in and around mountainous regions. In this study, a rock-cut located in a remote terrain where a rail track was passing through was aerially inspected and imaged for performing a comprehensive safety assessment and analysis to evaluate the stability of rock-cut and ways to assess rockfall safety zones and boundaries. A unique approach was developed by leveraging the aerial mapping and data compilation along with an immersive three-dimensional visualization of slopes for conducting stability analysis followed by the evaluation of rockfall debris zones adjacent to rail tracks. Successful assessments conducted in this study indicate that the methodologies will benefit the transportation agencies in effectively monitoring and managing transportation infrastructure adjacent to hilly terrains and ensure the maintenance of safe clearance zones needed to safeguard the public and property.

交通基础设施通过其遍布美国的庞大网络促进了货物、人员和服务的可达性和流动性。交通部门 (DOT) 机构在监控和维护这些基础设施资产以继续其服务和运营方面面临许多挑战，尤其是那些位于农村和偏远地区斜坡附近的资产。在这些条件下动员和进行传统的基础设施检查可能既费力又费时。此外，不稳定或高度风化的岩石斜坡会由于含水量、侵入和温度变化而造成严重的落石危害，在一段时间内发生，导致风化和落石，最终导致碎片堆积。最近，无人驾驶飞行器 (UAV) 与近距离摄影测量技术相结合，正在研究并普遍用于山区及其周边地区的基础设施监测应用。在这项研究中，对位于铁路轨道穿过的偏远地形的岩屑进行了空中检查和成像，以进行全面的安全评估和分析，以评估岩屑的稳定性以及评估落石安全区和边界的方法. 通过利用航空测绘和数据汇编以及斜坡的沉浸式三维可视化，开发了一种独特的方法，用于进行稳定性分析，然后评估铁路轨道附近的落石碎片区。