Hennepin County Street Centerlines

This dataset contains the street centerlines of roadways in Hennepin County in the Metro Regional Centerline (MRCC) standard format. It is primarily used for geocoding purposes. The attribute table includes road names and geocoding ranges for each road feature. The associated street alias table can be joined to this dataset using the UNIQUE_ID field and the JOIN_ID field from the alias table. More recently, the dataset has been enhanced to better support routing, including the conversion of single line segments to dual carriageway for divided highways and boulevards and the addition of access ramps. Speed, elevation, and one way attributes are also provided, allowing this dataset to be built into a routable network dataset Attribute information is defined by the MRCC standard. Information on the standard, including attribute definitions, is available on the MetroGIS MRCC project site. While this dataset includes only Hennepin County roadways, it is intended to align with neighboring counties to provide a standard, multi-purpose regional street centerline dataset. The full regional dataset is available for download from MN Geospatial Commons website.

本数据集包含亨内平县（Hennepin County）道路的街道中心线数据，采用都会区域中心线（Metro Regional Centerline, MRCC）标准格式。其主要用途为地理编码（geocoding）作业。属性表涵盖各道路要素的道路名称与地理编码范围。可通过本数据集的UNIQUE_ID字段与街道别名表的JOIN_ID字段，将关联的街道别名表与本数据集进行关联匹配。近期，本数据集已完成功能升级以更好支持路径规划：包括将分隔式公路及林荫大道的单线路段转换为双向分隔车道形式，并新增了匝道（access ramps）。数据集还提供了车速、高程及单向通行属性，可将其构建为可路由网络数据集（routable network dataset）。属性信息均遵循MRCC标准定义，该标准的相关资料（含属性定义细则）可在都会GIS（MetroGIS）MRCC项目官方网站获取。尽管本数据集仅覆盖亨内平县的道路，但旨在与周边县域的数据集对齐，以打造一套通用的多用途区域街道中心线数据集。完整的区域数据集可从明尼苏达州地理空间共享平台（MN Geospatial Commons）网站下载。