NEW - Interstate 69 extension, U.S. National Grid data
by NEW - Interstate 69 extension, U.S. National Grid data
A new layer has been added showing the Interstate 69 Extension and associated ramps for southern Indiana. The first three sections (from Evansville to Crane) opened for travel on November 19, 2012. The fourth section (from the US 231 interchange to Bloomington) is also scheduled to be completed by the end of 2014. The layer showing Mile Markers - System 1 Roads has also been updated with markers for the new extension. Data were provided by INDOT personnel on November 8, 2012.
A new layer showing the U.S. National Grid (1000 meters) (USNG) has been added. The USNG establishes a nationally consistent grid reference system, seamless across state jurisdictions and is the foundtaion for a universal base map index. It provides an unambiguous way to describe locations where users are operating in areas away from established road networks, or in areas affected by natural disasters where roads or road signs have been destroyed. This system is flexible and expandable and can be used to represent larger areas (four digit values) down to resolutions of single points on a map (ten digit values). NOTE - A PDF document is included in the download ZIP file for this layer that outlines background information, as well as a detailed description of how to create, read, and utilize national grid coordinate values.