Tunnels

Description The Tunnels layer is used primarily to reference structural features for GIS-based highway project planning. It is also used for reference within various GIS applications, such as OTIS. The data originates from the Pontis database, which is CDOT's database of record for roadway structures. That database contains location information acquired thru GPS technology, among other means. This layer is derived from the Structures dataset. Last Update 2017 Update Frequency As needed Data Owner CDOT Staff Bridge Data Contact Division of Transportation Development - GIS Support Unit Collection Method Projection NAD83 / UTM zone 13N Coverage Area Statewide Temporal Disclaimer/Limitations There are no restrictions and legal prerequisites for using the data set. The State of Colorado assumes no liability relating to the completeness, correctness, or fitness for use of this data.