When an existing right-of-way is not platted through from street to street, or when topography or other conditions preclude a street from being improved to its full street-to-street length, a cul-de-sac or other vehicular turnaround shall be provided. Cul-de-sacs are required at all street dead ends, and turnarounds are required at private access easement dead ends.

N/A

Determination of through street: The DPD Director, in consultation with the SDOT Director, shall determine when a street does or does not have the potential to become a through street. Dedication of additional right-of-way width may be required to accommodate the turnaround.

Cul-de-sac and turnaround design: Refer to Figure 4-25: Cul-de-sacs [ 383 kb ] for passenger vehicle cul-de-sac designs and Figure 4-26: Alley and Easement Turnarounds [ 418 kb ] for turnaround designs approved by the SDOT Director. Alternate designs may be proposed through a deviation request and are subject to the approval of the SDOT Director.

Turnarounds for non-residential zones: Shall be designed to accommodate the types of vehicles using the street, alley, or easement. Maximum longitudinal slope permitted for a cul-de-sac or turnaround is 5%.

Alley turns and turnarounds: Turnarounds are required at alley dead ends when the connecting street is an arterial. Figure 4-26: Alley and Easement Turnarounds [ 418 kb ] and Figure 4-25: Cul-de-sacs [ 383 kb ] illustrate alley turns that are approved by the SDOT Director for SF, L1, and L2 zones. All other zones will need individual review. The turn shall be designed to accommodate the types of vehicles using the alley. Alternate designs may be proposed through a deviation request, subject to the approval of the SDOT Director.

The Fire Department may require additional criteria for cul-de-sacs or turnarounds and alley turns or turnarounds when needed for adequate fire access.