20210304 07451600 1.0 TRUE Historic Trolley Routes Imported from an unknown CAD source, this polyline dataset delineates the routes of historical trolley lines, which have since been abandoned or removed. The data is not maintained, and offered as-is. -- Additional Information: Category: Transportation - Right of Way Management Purpose: Delineate known historical trolley lines. Update Frequency: Not Maintained -- Metadata Link: https://www.portlandmaps.com/metadata/index.cfm?&action=DisplayLayer&LayerID=53242 Bureau of Transportation