Transportation Reports

10-Year Traffic Count Report

The information in the 10-Year Traffic Count Report (PDF) 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.

2015 Safety Improvement Program Crash Analyses

The purpose of 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.

View the 2015 Crash Analyses (PDF). To obtain copies of individual crash reports in Jefferson County, contact the Colorado State Patrol at 303-273-1616.

Jefferson County Volume & Capacity Ratio Map

The 2012 and 2035 Volume/Capacity Ratio Maps (PDF) 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. 

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