Snohomish County, WA (Arterial Plan, 2002)
- The linework shown in this layer was originally obtained from Street Centerlines data set in the mid-1990's. It has since been maintained seperately by the Planning Dept. As a result some roads may no longer spatially register with the street centerline base data. Arterial_circ contains an attribute, ART_DESIG, that defines 7 classes of arterials, including planned roads that do not yet exist. A similar data set, MajorRoads, contains existing roadways only.
- Snohomish County (WA) Geographic Information System (Snohomish GIS)
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