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This feature class consists of approximately 640,000 features representing around 70,000 miles of Interstate, Primary, Secondary and Urban roads throughout the State of Virginia. The Linear Referencing System is based on the Virginia Department of Transportation's Source System of Record for road inventory, Roadway Inventory Management System (RIMS). Only official VDOT route number routes are included in this feature service. For the network including street name routes, please use the official release map package here.

Geometry and Attribution:

The Linear Referencing System (LRS) data contained within this feature class provides route centerline geometry that is segmented at each intersection and supplies key descriptive attribution for each segment (i.e. edge) record.  The feature class also depicts overlapping routes (e.g. Interstate 64 and Interstate 95) as two separate collinear features, one on top of the other.  Routes built in the prime and non-prime directions are included.  Each road centerline record has a master route record assigned.  In addition, local Virginia Geographic Information Network (VGIN) street names are attributed to each edge where possible.

Measures:

The linear reference is based on Official State Mileage (OSM) as derived from reference points at Roadway Inventory Management System (RIMS) roadway intersections (i.e. nodes/junctions).