Search Constraints
You searched for:
Subject
Transportation
Remove constraint Subject: Transportation
Collection
Pennsylvania Spatial Data Access (PASDA)
Remove constraint Collection: Pennsylvania Spatial Data Access (PASDA)
Year
2006
Remove constraint Year: 2006
1 - 3 of 3
Search Results
1. Railroad Lines: Allegheny County, Pennsylvania
2006. Allegheny County Division of Computer Services Geographic Information Systems Group. Railroad Centerlines are collected by digitizing the apparent center of each set of rails. The Rail Line Edge is the apparent Right of Way. Rights ...
2. Retaining Walls: Allegheny County, Pennsylvania
2006. Allegheny County Division of Computer Services Geographic Information Systems Group. The Retaining Wall Feature Dataset contains photogrammetrically compiled Retaining Walls - structures of concrete, brick, stone, wood, etc. retaini...
3. Street Edge of Pavement: Allegheny County, Pennsylvania
2006. Allegheny County Division of Computer Services Geographic Information Systems Group. Edge of Pavements are the edges of all public thoroughfares including paved roads, unpaved roads, bridges, overpasses, tunnels, alleys, stairways a...