USGS 7.5' topographic quadrangle map coverage of Allegheny County
Structures on pghbridges are indexed by USGS topo quad and UTM (Universal Transverse Mercator) grid.
Use table below for maps showing UTM grid for each topo quad.
Download higher resolution USGS maps from PASDA
Wider red lines are Interstate highways.
Other colored lines indicate Allegheny County Belt Route System.
MAPS ON THIS SITE
Website coverage: 7.5' topo quads showing UTM grid;
full color area indicates Allegheny County;
(approx 200k jpg each)
ALLEGHENY COUNTY
visit site - Allegheny County GIS Viewer (Geographic Information Systems)
visit site - Allegheny County municipalities map
showing all 130 municipalities, with links to information about each.
ON-LINE MAP SERVERS
Google Maps
visit site - Pittsburgh
Pennsylvania Spatial Data Access
visit site - environmental and GIS data products listing
visit site - downloadable USGS 7.5' topo quads of Pennsylvania
visit site - downloadable USGS 7.5' topo quads of Pennsylvania (updated editions after 1983)
MapQuest digital maps
visit site - Pittsburgh
Terraserver - searchable aerial photos
visit site - main page
visit site - aerial photo of downtown Pittsburgh
USGS 15' topo quad coverage of Allegheny County
Green labels (green outline) indicate 15 minute series used for historical (c1900) USGS topo quads;
Black labels (grey outline) indicate 7.5 minute series USGS topo quads.
Maptech -- Historical (c1900) USGS 15 minute topo quad
visit site - USGS 15' topo quads of Pennsylvania (PASDA)
visit site - browsable USGS 15' topo quads of Pennsylvania (cut into quarters)
