Article V — Fire Safe Standards.
Sec. 13-36. - Dead-end roads.
Sonoma County Municipal Code · 2026-09 edition · updated 2026-09-27 · Sonoma County
In addition to meeting the applicable standards in the preceding sections, all dead-end roads shall comply with the following requirements:
(a)
All dead-end roads shall have a maximum length, including any dead-end roads accessed from the original dead-end road, not exceeding the following cumulative lengths regardless of the number of parcels served:
(1)
Parcels zoned for less than one (1) acre — eight hundred feet (800');
(2)
Parcels zoned for one (1) acre to four and ninety-nine hundredths (4.99) acres — one thousand three hundred twenty feet (1,320');
(3)
Parcels zoned for five (5) acres to nineteen and ninety-nine hundredths (19.99) acres — two thousand six hundred forty feet (2,640'); and
(4)
Parcels zoned for twenty (20) acres or larger — five thousand two hundred eighty feet (5,280').
All lengths shall be measured from the edge of the road at the intersection that begins the dead-end road to the farthest point on the dead-end road. Where a dead-end road crosses areas of differently zoned parcels, requiring different length limits, the average size of the parcels served shall determine the maximum allowable length of the road.
(b)
All dead-end roads serving parcels five (5) acres or larger shall have turnarounds constructed approximately every one thousand three hundred twenty feet (1,320') along the entire length of the road.
(c)
All dead-end roads shall have a turnaround constructed at the terminus of the road. Any road or driveway structure required to have a turnaround may have either a hammerhead/T, a stub out, or terminus bulb. All turnarounds shall have a minimum turning radius of forty feet (bulbs shall be forty feet (40') from the center point of the bulb, hammerhead/T and stub out shall have entry and exit curves of no less than a forty-foot radius). If a hammerhead/T is used, the top-of the "T" shall be
a minimum of sixty feet (60') in length. If a stub is used, then the length of the turnaround shall be forty feet (40'), as measured from the road or driveway edge. The minimum width of either a hammerhead/T or a stub out shall be equivalent to the road or driveway entering the turnaround.
(Ord. No. 6318, § I, 8-11-2020)
State Law reference— California Code of Regulations, Title 14 Natural Resources Code, Division 1.5, Chapter 7, Subchapter 2, Article 1-5, SRA Fire Safe Regulations, 1273.05, 1273.08.
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