A. General Design Standards
1. All streets in a new development shall be designed and constructed pursuant to the standards in the Green Book. Streets shall be dedicated to the City upon completion, inspection, and acceptance by the City.
2. The street system of the proposed development shall, to the extent practicable, conform to the natural topography of the site, preserving existing hydrological and vegetative patterns, and minimizing erosion potential, runoff, and the need for site alteration. Particular effort should be directed toward securing the flattest possible grade near intersections.
3. Streets shall be laid out to avoid environmentally sensitive areas.
4. Private streets may be allowed within developments that will remain under common ownership, provided they are designed and constructed pursuant to the standards in the Green Book and Florida Department of Transportation Specs for Roads and Bridges current edition.
5. The street layout in all new development shall be coordinated with and interconnected to the street system of the surrounding area.
6. Streets in proposed subdivision shall be connected to rights-of-way in adjacent areas to allow for proper inter-neighborhood traffic flow. If adjacent lands are unplatted, stub outs in the new development shall be provided for future connection to the adjacent unplatted land.
7. Residential streets shall be arranged to discourage through traffic.
8. Streets shall intersect as nearly as possible at right angles and in no case shall be less than seventy- five (75) degrees.
9. New intersections along one (1) side on an existing street shall, where possible, coincide with existing intersections. Where an offset (jog) is necessary at an intersection, the distance between centerlines of the intersecting streets shall be no less than one hundred fifty (150) feet.
10. No two (2) streets may intersect with any other street on the same side at a distance of less than four hundred (400) feet measured from centerline to centerline of the intersecting street. When the intersected street is an arterial, the distance between intersecting streets shall be no less than one thousand (1,000) feet.
B. Paving Widths
Paving widths for the street classification shall be as provided in Table 3.03.02(A) of this Code.
C. Curbing requirement
1. Curbing shall be required for the purposes of safety, delineation and protection of pavement edge along streets, and for drainage in the following cases: where the surface drainage plan requires curbing to channel stormwater.
2. All curbing shall conform to the construction standards contained in the Florida Department of Transportation Specs for Roads and Bridges, current addition.
D. Shoulders
Shoulders, where required, shall measure at least four (4) feet in width and shall be required on the side of streets and shall be located within the right-of-way. Shoulders shall consist of stabilized turf or other stabilizing material. Shoulders and/or drainage swales are required as follows:
1. Shoulders are required on residential access and residential subcollector streets only where necessary for stormwater management or road stabilization.
2. All residential collector streets shall provide two (2) four (4)-foot wide shoulders. Shoulders should be grass surfed except in circumstances where grass cannot be expected to survive. In no case shall the shoulders be paved.
3. Where shoulders are required by the Florida Department of Transportation.
4. Collector streets where curbing is not required.
5. Arterial streets where curbing is not required.
E. Acceleration, Deceleration, and Turning Lanes.
1. Deceleration or turning lanes may be required by the City along existing and proposed streets as determined by a traffic impact study where the City can justify the need.
2. Deceleration lanes shall be designed to the following standards:
a. The lane width shall be the same as the required width of the roadway moving lanes.
b. The lane shall provide the full required lane width for its full length. It shall not be tapered.
c. The minimum lane length shall be as follows:
Design Speed of Road | Minimum Deceleration Lane Length |
30 mph | 165 feet |
40 mph | 230 feet |
50 mph | 310 feet |
3. Acceleration lanes are only required when indicated as needed by a traffic impact study. Where needed, a paved taper shall be provided for right hand turns.
F. Cul-de-sacs Turnarounds
1. An unobstructed twelve (12) foot wide moving lane with an outside turning radius of thirty-eight (38) feet shall be provided at the terminus of every permanent cul-de-sac.
2. No cul-de-sac shall exceed eight hundred (800) feet in length. Right-of-way radius for cul-de-sac shall be fifty (50) feet.
G. Stub Streets
1. Residential access and subcollector stub streets may be permitted only within subsections of a phased development for which the proposed street in its entirety has received final site plan approval.
2. Residential collector and higher order stub streets may be permitted or required by the City provided that the future extension of the street is deemed desirable by the City.
3. Temporary turnarounds shall be provided for all stub streets providing access to five (5) or more lots or housing units. Where four (4) or fewer units or lots are being served, a sign indicating a dead-end street shall be posted.
H. Clear Visibility Triangle
In order to provide a clear view of intersecting streets to the motorist, there shall be a triangular area of clear visibility formed by two (2) intersecting streets or the intersection of a driveway and a street. The following standards shall be met:
1. Nothing shall be erected, pled, parked, planted, or allowed to grow in such a manner as to materially impede vision between a height of two (2) feet and ten (10) feet above the grade, measured at the centerline of the intersection.
2. The clear visibility triangle shall be formed by connecting a point on the street center line, to be located at the distance from the intersection of the street center lines indicated below, and a third line connecting the two (2) points. See Figure 3.05.04 (H).
3. The distance from the intersection of the street center lines will be determined by the Superintendent of the Road and Street Department, and the Public Works Director in their absence, and based upon the individual and unique conditions of each intersection and the adjacent properties.
I. Signage and Signalization
The developer shall provide all necessary roadway signs and traffic signalization as may be required by the City, based upon City or State traffic standards. At least two (2) street name signs shall be placed at the four-way street intersection, and one (1) at the “T” intersection. Signs shall be installed under light standards and free of visual obstruction. The design of street name signs shall be consistent, of a style appropriate to the community, and of a uniform size and color.
J. Street Trees
No development shall be approved without reserving an easement authorizing the City to plant shade trees within five (5) feet of the required right-of-way boundary. No street shall be accepted for dedication until the easement required by this subsection has been provided.
(Ord. 711, passed 2-5-2019)