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1986 Map of Pittsburgh East

Name: 1986 Topographic Map of Pittsburgh East
Creator: U.S. Geological Survey
Published: 1988
License: https://creativecommons.org/publicdomain/mark/1.0/

USGS Topo · Published 1988

About this map

Industrial river valleys and the ridges of the Allegheny Plateau define this 1980s landscape east of Pittsburgh. The confluence of the Allegheny River and Monongahela River gives way to a dense network of mill towns and coal-belt boroughs, including McKeesport, Duquesne, and Clairton. Moving east, the terrain rises toward Chestnut Ridge and Laurel Hill, revealing the transition from heavy industry to the timbered reaches of Forbes State Forest.

Transportation infrastructure serves as the region's backbone, with the Pennsylvania Turnpike and Lincoln Highway cutting through Irwin and Greensburg. The influence of the rail era remains visible through the primary lines of Conrail and the B & O RR, which follow the winding paths of the Youghiogheny River and Turtle Creek. This survey captures Westmoreland County just as the regional economy was shifting, preserving the footprint of historic centers like Jeannette and Latrobe alongside newer suburban expansions in Monroeville and Murrysville.