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Structure
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Transportation
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Pennsylvania, United States
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1. Bridges: Chester County, Pennsylvania
2013. Pennsylvania Department of Transportation/Chester County Planning Commission. Bridges in Chester County -- this dataset is primarily derived from PennDOT's Bridge Management System (BMS). Full attribution from BMS is availabl...
2. Canada VMap1, Library 66: Bridge Lines
1945. VMap1 is a vector digital topographic reference product developed by Natural Resources Canada (NRCan) and The Department of National Defence (DND).... Canada Centre for Mapping and Earth Observation.
3. 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...