Clio Road/Welch Boulevard and Dayton Street
The intersection of Clio Road/Welch Boulevard and Dayton Street was included in the early preliminary engineering phase with support from the City of Flint due to intersection operations. This intersection is a secondary analysis Tier Three intersection.
During the skim analysis, it was observed that there were two angle crashes and one head on left turn crash over the 5-year period. These crashes resulted in zero fatalities, two type A injuries, zero type B injuries, and two type C injuries at the intersection.
During the skim analysis, it was observed that there were two angle crashes and one head on left turn crash over the 5-year period. These crashes resulted in zero fatalities, two type A injuries, zero type B injuries, and two type C injuries at the intersection.
The intersection of Clio Road/Welch Boulevard and Dayton Street is a signalized intersection. Clio Road is a north/south road with five lanes, two lanes in each direction with a center left-turn lane. Welch Boulevard is a northwest/southeast road with four lanes, two lanes in each direction. At the intersection with Dayton Street, the approach has an exclusive left-turn lane, two through lanes, and a right-turn slip lane. Dayton Street is an east/west road, with two lanes in each direction. At the intersection with Clio Road/Welch Boulevard, the approaches present an exclusive left-turn lane and a shared through/right-turn lane. Traffic signals are supported by mast arms. There are pedestrian crossings at all legs of the intersection. An aerial of the existing intersection can be seen in the photo above.
A commercial building is present in the northwest quadrant. In the northeast quadrant is the Clio Road Market. The southeast quadrant has a residential vacant field. The Genesee County Free Medical Clinic is located in the southwest quadrant. There are overhead electrical cables crossing through the intersection on the west and north sides of the intersection.
An operational analysis of the no-build condition was completed for the intersection using the 2045 forecast traffic volumes. The results of the analysis for the future no-build condition reveals all approaches and movements of the intersection operate at LOS C during the AM and PM peak hours.
The 95th percentile queue lengths were reviewed at the intersection and the results showed all approaches experienced a maximum queue length of 95 feet (6 vehicles) during the AM peak hour and 136 feet (9 vehicles) during the PM peak hour.
The operational results for future no-build conditions are presented in the table below.
A commercial building is present in the northwest quadrant. In the northeast quadrant is the Clio Road Market. The southeast quadrant has a residential vacant field. The Genesee County Free Medical Clinic is located in the southwest quadrant. There are overhead electrical cables crossing through the intersection on the west and north sides of the intersection.
An operational analysis of the no-build condition was completed for the intersection using the 2045 forecast traffic volumes. The results of the analysis for the future no-build condition reveals all approaches and movements of the intersection operate at LOS C during the AM and PM peak hours.
The 95th percentile queue lengths were reviewed at the intersection and the results showed all approaches experienced a maximum queue length of 95 feet (6 vehicles) during the AM peak hour and 136 feet (9 vehicles) during the PM peak hour.
The operational results for future no-build conditions are presented in the table below.
The proposed roundabout configuration for the intersection of Clio Road/Welch Boulevard and Dayton Street is a single-lane circulating. The proposed single-lane roundabout configuration will likely fit inside the existing right-of-way. The proposed inscribed diameter for the concept roundabout is 100 feet. The driveway configuration for the Clio Road Market should be investigated due to the existing driveways closeness to the proposed roundabout entry/exit radius.
An operational analysis for the single-lane roundabout (build) condition was completed for the intersection using 2045 forecast traffic volumes. The results of the analysis for the roundabout (build) condition reveals all approaches and movements of the intersection operate at LOS A during the AM and PM peak hours.
The 95th percentile queue lengths were reviewed at the intersection and the results showed all approaches experienced a maximum queue length of one (1) vehicle during the AM peak hour and three (3) vehicles during the PM peak hour.
The operational results for future roundabout (build) conditions are shown in the table below.
An operational analysis for the single-lane roundabout (build) condition was completed for the intersection using 2045 forecast traffic volumes. The results of the analysis for the roundabout (build) condition reveals all approaches and movements of the intersection operate at LOS A during the AM and PM peak hours.
The 95th percentile queue lengths were reviewed at the intersection and the results showed all approaches experienced a maximum queue length of one (1) vehicle during the AM peak hour and three (3) vehicles during the PM peak hour.
The operational results for future roundabout (build) conditions are shown in the table below.
A roundabout appears feasible at this location but will require coordination with the Clio Road Market for driveway reconfiguration.
Opinion of probable cost were developed for a single-lane roundabout. The total probable cost is $1.33 million in year 2025 dollars. The probable cost includes a 20 percent contingency and 3 percent inflation. Not included in this fee are the potential costs to relocate any utilities to accommodate the proposed layout. A full breakdown along with all the assumptions can be found in Appendix 3 in the report below.
Potential funding sources for this improvement could include regular road improvement funding or an earmark.
For a complete breakdown of the estimate please review the full report below.
Potential funding sources for this improvement could include regular road improvement funding or an earmark.
For a complete breakdown of the estimate please review the full report below.
