Pier structure geometry data for side views of selected Montana bridge piers

The U.S. Geological Survey (USGS), in cooperation with the Montana Department of Transportation (MDT), collected various data at selected bridges in Montana. The data...美国地质调查局（U.S. Geological Survey, USGS）与蒙大拿州交通部（Montana Department of Transportation, MDT）开展合作，在蒙大拿州境内选定的桥梁点位采集了多类数据。数据……