Research


Scope and Content Note

This series consists of rolled mylar, linen, and paper topographic maps created by the Department of Transportation and its predecessor agency, the Department of Public Works, for use in the planning and preliminary design of highway projects. The black and white maps were generally produced on 30" x 54" sheets using photogrammetry. The maps were produced using a 1"=200' scale, with individual sheets generally covering an area of approximately two square miles. Geographic coverage is limited to narrow corridors along state highways that were often built after the production of the maps depicting these corridors.

Among the features shown on most of the maps are: all roads, with identifying route numbers and names; railroads; airports; transmission lines; individual buildings; hydrography; civil boundaries; fence lines; and, in some cases, property lines with property owners' names. Contours, with a five feet contour interval, are shown on all maps. The State Plane Coordinate System usually is shown on the maps. Projects designed or planned with the aid of these maps generally are not depicted.