DescriptionPoint geographic dataset representing the location along a CDOT highway where that highway's linear reference system indicates a whole number reference point.Please note, mile posts are not necessarily found at milepoints.Last Update2023 (Except for an update to US 550A mile 15-16.8 and connectors which are effective as of December 31, 2024)Update FrequencyAs neededData OwnerDivision of Transportation DevelopmentData ContactGIS Support UnitCollection MethodProjectionNAD83 / UTM zone 13NCoverage AreaStatewideTemporalDisclaimer/LimitationsThere 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.

Mileage (location) markers of transportation centerlines within Gilpin County, Colorado.

Colorado Highway and Frontage road milepost locations. Mileposts are locations of milepost (mile marker) locations alongside CDOT highways, collected during GPS mapping efforts in the early 2000s. MIleposts differ from milepoints in that milepoints represent the location along CDOT highways where that highway's linear reference system indicates a whole number reference point (such as 57.000). Therefore, mileposts are not necessarily found at exactly at milepoints. Also includes collection date of point, route ID and some GPS locations.

Mile markers for select Boulder County roads and CDOT roads. The Boulder County roads were initially selected based on historic precedent, referencing printed maps in the Public Works (formerly Transportation) Department. Markers for more roads may be added after further review. Historic roads included some within municipalities, and mile markers were retained for those roads, regardless of annexations.Mile marker points along County roads were measured using GIS. Each road length was calculated using GIS, depending on accuracy from the Colorado StatePlane coordinate system and then accounting for slope from a 2.5 foot DEM. Markers, every quarter mile, were located along routes using a linear referencing method.Markers on CDOT roads were selected from a feature service owned by them. The selected roads were based on the Road_Map_Roads feature class.Note: Road Maintenance mile posts will be move based on markers in this dataset.

Highway and Railroad mile posts in Grand County, CO - published 9/28/2023

DescriptionThis data is designed to assist preparing the SWMP for projects and supply Maintenance projects that need seed mixtures for work along Region 2 highways. Also, these seed mixtures are available in a digital format in ARC/GIS layer for CDOT’s OTIS Highway Map System. The intended users are Environmental, Engineers, and CDOT maintenance staff. However, there are limitations and assumptions that were considered when developing these seed mixtures. Assistance from the environmental staff is strongly recommended before using a seed mixture. Site specific conditions may require adjustment to the seed mixture(s). The seed mixtures contained in this dataset are designed for the site specific conditions (e.g., soil texture and chemical composition, precipitation, elevation, aspect, etc.) associated with the approximate mile marker along Region 2 highways. Native species were selected for the seed mixtures with few exceptions. The individual plant species were selected based on their adaptions to the site conditions, ability to control erosion, and compatibility to establish a diverse plant community. The species composition of the seed mixture was also based on the recommendations found in the Natural Resources Conservation Service’s (NRCS) “Major Land Resource Areas (MLRA).”(http://www.nrcs.usds.gov)

    Last Update
    2014


    Update FrequencyNot planned


    Data Owner
    Region 2


    Data Contact
    Region 2 Environmental Specialist or Water Pollution Control Manager


    Collection Method



    Projection
    NAD83 / UTM zone 13N


    Coverage Area
    Region 2


    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.