Right of Way Map Footprints, Minnesota

The Right of Way Map Footprint is a GIS data set created to represent the outer footprint or extent of a right of way map (including footprints for both Vector (CAD) and Raster Images). The purpose is to aid the user in more rapidly identifying the desired map for a specific area of interest relative to other maps, roads, landmarks, etc. This data set is developed and maintained on a statewide basis. It does not include geo-referenced representations of right of way maps themselves.

Additional Info

Field Value
Last Updated August 25, 2015, 10:03
Created April 7, 2015, 08:01
dsAccessConst USE OF THIS DOCUMENT IS SUBJECT TO MNDOT'S DISCLAIMERS, LEGAL NOTICES AND POLICIES FOUND at http://www.dot.state.mn.us/information/disclaimer.html
dsCurrentRef The right of way maps used as the basis for the footprints span many decades worth of surveying and mapping. The original right of way maps were drafted by hand using ink on a linen medium with the map rolled for storage. During this period updates to the maps were performed directly on the surface of the linen. It is rare to find specific date information on a map corresponding to an update. In the 1980's technology advanced to a level where computer aided design and drafting software enabled the right of way map to be developed in an electronic vector (CAD) format. The earliest vector (CAD) files were plotted on mylar, a stable medium for preservation and essential for creating paper prints. Once the mylar was made the electronic file was typically discarded. In later years these mylar maps were electronically scanned and converted to a raster formatted map. In the 1990's all the linen maps were electronically scanned with their image converted to a raster format. An update to the raster map was made using a process where any new features were created in the CAD environment as vector features or text and then stamped into the previously existing raster image. The vector (CAD) file containing the updates was then discarded. This form of updating raster map files is typical of current practices. Eventually conditions evolved to where the vector (CAD) file for each new map was retained. New maps are prepared for projects involving new road locations, extensive relocations, horizontal alignment changes or divided highways. These files exist in Bentley's DGN vector (CAD) format. Currently most of the larger highway project maps are created and maintained in a vector (CAD) format. Since May 2002 all maps, both vector (CAD) and raster formats, are foot-printed and geo-referenced for quicker more streamlined access in a spatial index using GIS technology. The result is a statewide coverage consisting of map footprints for the two groups of file formats.
dsMetadataUrl ftp://ftp.gisdata.mn.gov/pub/gdrs/data/pub/us_mn_state_dot/trans_row_map_footprints/metadata/metadata.html
dsModifiedDate 2015-05-20 00:02:59
dsOriginator Minnesota Department of Transportation, Office of Land Management
dsPurpose The data set was created to enhance the accessibility to right of way maps by enabling the use of spatial indexing tools. A footprint of a map is created to represent the extent of the map and provides usefulness as a general aid to find a right of way map.

Dataset extent