DEPARTMENT: Transportation
FILE TYPE: Regular Information
TITLE
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Information On Top Ten Ranked Critical County Intersections And Corresponding Mitigations
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PURPOSE/ACTION REQUESTED
Provide an update to County Leadership regarding review of the County's highest-ranked intersections in relation to crashes as well as provide information on corresponding mitigations and studies.
SUMMARY
Every year, Dakota County Traffic staff reviews and logs crashes that occurred on the County transportation system from the prior year in a process called the Intersection Crash Listing (ICL). A Crash Rate Index (CRI) is determined for each intersection by combining crash data from two years prior and calculated by weighting the three-year crashes against traffic volumes and crash comparisons to similar intersections across the state. CRI is an adequate indication of whether an intersection has statistically significant safety concerns.
County staff ranks all intersections by their CRI to help determine where safety improvements can be made or to evaluate what may be causing the crashes. Below are the 2024 highest-ranked CRI intersections on the County network and the corresponding mitigations and evaluations, both planned and in process. Since the ICL utilizes the past three years of crash data, sometimes there are occurrences where an ICL ranking exists after the mitigation has taken place.
Intersection Crash Listing Ranking Based off Crash Rate Index
Intersection
Mitigation/Evaluation
CSAH 50 and CSAH 60
Roundabout Crash Study and Evaluation (2024-2025)
CSAH 46 and CSAH 85
Roundabout Installed (2024)
CSAH 33 and December Trail
Sightline and Speed Evaluation (Current) - Initially thought to be construction detour-related
CSAH 50 and Hamburg Avenue
Roundabout Installation (2025)
CSAH 42 and Biscayne Avenue
Temporary Closures (2025) and Signal Installation (2027)
CSAH 8 and Livingston Avenue
Sightline and Speed Evaluation (Current) - Initially thought to be construction...
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