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Officials propose standards for circular driveways, hammerheads to improve safe access on busy roads
Summary
Planning staff presented draft dimensional standards for circular driveways and hammerhead turnarounds designed to let drivers exit properties facing forward. The proposal applies as an exception on several arterial roads; UDOT approval will be required where state roads are involved.
Planning staff presented draft standards for circular driveways and hammerheads aimed at improving access on several busy corridors.
Staff described dimensional guidance developed with the city engineer: a 14-foot driveway width, a 17-foot interior diameter and a 31-foot exterior diameter for the circular layout, a 10-foot minimum from sidewalk and a 25-foot front-yard setback. Staff emphasized the design is intended for access — to let drivers leave facing forward — not to increase front-yard parking.
A hammerhead (a short turnaround allowing a driver to back in and pull straight out) was offered as an alternative where site constraints prevent a full circular driveway; the hammerhead dimensions discussed included a 14-foot width and about 16-foot depth for the turnaround area. Staff said gravel surfacing would be permissible and that the code would still limit impervious area (staff proposed that no more than 50% of the front yard be paved).
Officials noted that some of the corridors named in the proposal are UDOT roads (including portions of 5600 South and 3500 West), and any change on those roads would require UDOT approval; staff said the hammerhead option could allow compliance with UDOT constraints when a full circular layout is not permitted. Commissioners generally favored offering both options — circular and hammerhead — while acknowledging the circular driveway will be practical on a limited number of properties with larger front yards.
Staff said they will move the proposal forward for additional review and include applicable roadway lists and technical drawings in future packets.
