Infrastructure Railroad

Alaska Railroad centerline data compiled from a GPS survey by Mullikin Surveys in 2005. Data was delivered to MSB GIS by ARR as a series of AutoCAD dwg files that were merged into a single GDB format and then published as shapefile. MSB GIS added a couple of older abandoned centerlines in the Palmer area that are sometimes needed for maps.本数据集为2005年由穆利金测量公司（Mullikin Surveys）通过GPS测量整合所得的阿拉斯加铁路中心线数据。阿拉斯加铁路（ARR）将一批AutoCAD DWG格式文件交付至MSB GIS团队，这批文件先被合并为单一地理数据库（GDB）格式，随后又被发布为形状文件（shapefile）。MSB GIS团队还在帕尔默（Palmer）区域新增了若干条老旧废弃的中心线，此类数据在部分地图编制工作中偶有使用需求。