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  • Transportation Reports


    10-Year Traffic Count Report

    The information is sorted by the road name, location and intersection. The data was collected over a 24-hour period, during midweek and typically in the summer. 10-Year Traffic County Report Adobe Reader is required for viewing this document

    2015 Safety Improvement Program Crash Analyses

    The purpose of the the 2015 Safety Improvement Program was to comprehensively evaluate accidents that occurred on roadways and at intersections in Jefferson County. These analyses will assist Jefferson County Transportation and Engineering with recommending specific improvements that could reduce the frequency and severity of accidents on Jeffco roadways. 2015 Crash Analyses Adobe Reader is required for viewing this document

    To obtain copies of individual crash reports in Jefferson County, contact the Colorado State Patrol View exit disclaimer policy page for links to third-party websites. at 303-273-1616. 

    Jefferson County Volume and Capacity Ratio Map

    The 2012 and 2035 Volume/Capacity Ratio Maps show the level of congestion for Jefferson County and Colorado Department of Transportation (CDOT) roadways. A volume to capacity ratio measures the amount of traffic on a given roadway relative to the amount of traffic the roadway was designed to accommodate.  Jefferson County Volume and Capacity Ratio Map Adobe Reader is required for viewing this document

    Congestion levels for this Jefferson County analysis are defined below: 

    Low congestion - volume/capacity ratio of 0.8 to 0.99
    Moderate congestion - volume/capacity ratio of 0.9 to 0.99
    Heavy congestion - volume/capacity ratio of 1.0 to 1.29
    Severe congestion - volume/capacity ratio of greater than 1.30