1. Subdivision plans shall be consistent with the Major Street Plan, which has been adopted as part of the Transportation and Circulation element of the General Plan of the City.
   1. Collector Streets (feeder). Where the area of a proposed subdivision includes any Collector class streets, as shown on the Major Street Plan, the subdivision plan shall incorporate such streets in the location shown on the Major Street Plan, and the approval of the Final Plat shall include the dedication of the right- of-way and its improvement in accordance with the applicable City standards.
   2. Minor Streets (local service). Where the area of a proposed subdivision includes any Minor class streets, as shown on the Major Street Plan, the subdivision plan shall provide for such street in the approximate location shown on the Major Street Plan, and the approval of the Final Plat shall include the dedication of the right-of-way and its improvement in accordance with the applicable City standards.
   3. Arterial Streets. Where the area of a proposed subdivision includes any arterial class streets, as shown on the Major Street Plan, the subdivision plan shall incorporate such streets in the location shown on the Major Street Plan, and the approval of the Final Plat shall include the dedication of the right-of-way and its improvement in accordance with the applicable City standards.
2. Through Traffic. Minor streets shall be laid out to encourage circulation but discourage through traffic. Subdivisions with twenty 20 or more lots shall provide two (2) working accesses to the development.
3. Stub Streets (Amended by Ord. 96-08, 5/28/96; Amended by Ord. 2013-01, 1/15/13). Shall be required to provide adequate circulation – Temporary turnaround required in certain instances--Subsequent development of adjacent property to incorporate.
   1. In order to facilitate the development of an adequate and convenient circulation system within the City, and to provide access for the logical development of adjacent vacant properties, the City shall, as a condition of approval, require the subdivision plan to include one or more temporary dead end streets (stub streets) which extend to the boundary of the parcel, and dedicate the right-of-way to the property line to the City to insure that adjacent properties are not landlocked.
   2. All such stub streets shall be fully developed with full City street and utility improvements to the boundary of the subdivision unless it can be shown by the applicant for the subdivision that the need for a fully improved street does not have an essential link to a legitimate government interest or that the requirement to fully improve the stub street is not roughly proportionate, both in nature and extent to the impact of the proposed subdivision on the City.
   3. Factors to be considered in determining whether or not the requirement to install a fully improved street is considered proportionate may include but not be limited to:
      1. The estimated cost to improve the stub street;
      2. Whether or not the stub street will be essential to provide reasonable access to the undeveloped parcel;
      3. The number of lots in the proposed subdivision that will be accessed from the improved stub street;
      4. The estimated number of lots that can be developed in the future on the adjacent undeveloped parcel through use of the stub street.
         
         If the Land Use Authority upon the receipt of a positive recommendation from the reviewing body determines that the stub street need not be fully developed either because it does not further a legitimate government interest or that the requirement is disproportionate to the impact of the proposed subdivision on the City, then only the right-of-way for the stub street shall be dedicated to the City and the requirement to improve the stub street shall be placed on the undeveloped adjacent parcel as a condition of the development if the adjacent property is ever developed.
   4. Any such stub street having a length of more than one hundred fifty feet (150) feet or providing primary vehicular access to one (1) or more lots shall be terminated by an improved temporary turn-around designed and constructed in accordance with the City Standards. Where any portion of the temporary turn-around is to be located on private property, use of the portion located on private property by the public shall be secured through the conveyance of an easement for that purpose.
   5. Any plan for the subsequent development of the adjacent property shall provide for the continuation of any such stub street and shall bear the burden of designing such stub street or streets in accordance with City standards.
4. Intersections. Intersections of minor streets with major streets shall be kept to the minimum.
5. Right-of-Way Width. Minimum right-of-way widths for local streets shall be the following:
   
   1. Arterial street: Sixty-six (66) feet
   2. Collector street: Sixty (60) feet
   3. Minor street, rural road, secondary access, or frontage road: Fifty-Four (54) feet
6. Roadway Width. Unless otherwise restricted by §10-9a-508 of Utah State Code (as amended), local streets shall have roadway widths and classifications as follows (Note: Add four feet (4') for curb where required):
   1. Arterial street: forty two feet (42’) paved;
   2. Collector street: thirty six feet (36’) paved;
   3. Minor street or frontage road: thirty feet (30’) paved;
   4. Rural roads: twenty six feet (26’) paved. Rural roads shall require approval by the Land Use Authority through the subdivision exception procedure.
   5. Secondary Access: Shall meet the minimum width and improvements required by the International Fire Code adopted by reference in §15A of Utah State Code (as amended) for emergency access along with such other improvements such as surface type, curb and gutter, and gating at the discretion of the Land Use Authority and upon positive recommendation of the Recommending Body and City Staff
7. Road Shoulders. Where curbs are not required to be installed, a minimum of ten foot (10') shoulders shall be provided on each side of the street unless parking is prohibited.
8. Partial-Width Streets. All streets within and adjacent to a subdivision shall either have been previously conveyed to the City by deed or dedication or shall be shown on the final plat for dedication to the City for street purposes.
   
   All streets shown on the final plat for dedication to the City shall conform to the minimum standards for street width and improvements for the entire width of the street, except that the City Council may accept the dedication and improvement of partial width streets provided:
   1. That the proposed partial width street is located at the border of the subdivision and the land abutting the proposed uncompleted side of the street is not owned by the subdivider.
   2. The width of the right-of-way of the partial width street shall be not less than thirty- nine (39) feet in the instance of a minor class street and forty-two (42) feet in the instance of a collector class street.
   3. Upon approval of the Land Use Authority the improvements constructed on the partial width street may include: 
      1. the curb, gutter and sidewalk improvements adjacent to all abutting lots in the subdivision,
      2. the water and sewer line, 
      3. a hard surfaced travel way portion having a width not less than one/half that required for the specified street class plus an additional twelve (12) feet of width, 
      4. all utility systems in the partial width street shall be located and constructed as set forth in City standards, and 
      5. storm drains.
   4. That there are no existing conditions which would have the effect of preventing the subsequent development of the remaining portion of the street.
   5. That construction of the partial width street at the proposed location will not create an unsafe or hazardous condition.
      
      No final plat shall be approved where access to a proposed or existing street from adjacent property is proposed to be prohibited or is impaired by an access retainer strip ("nuisance" or "protective" strip).
9. Cul-de-sac Streets.(Ord 96-08 amended 5/28/96) Cul-de-sacs (dead end streets) shall be used only where unusual conditions exist which make other designs undesirable. Each cul-de-sac street shall have a minimum right-of-way width of fifty-four (54) feet and must be terminated by a turn-around having a radius of not less than sixty (60) feet to the property line. The maximum length of a cul-de-sac shall be four hundred and fifty (450) feet as measured from the center of the turn-around to the point of connection to the next intersecting street. Surface water must drain away from the turn-around, except where surface water cannot be drained away from the turn-around along the street, due to grade, necessary catch basins and drainage easements shall be provided.
10. Number of Streets at Intersection. No more than four streets shall enter an intersection.
11. Angle of Street Intersections. Streets shall intersect at ninety degrees, except where otherwise recommended as necessary by the Planning Commission and approved by the City Council. The minimum radius of property lines and back of curb at intersections shall be fifteen (15) feet and twenty-five (25) feet respectively
12. Centerline of Intersecting Streets. The centerline of two subordinate streets meeting a through street from opposite sides shall extend as a continuous line, or the centerline shall be offset at least one hundred fifty (150') feet. An exception may be given to the off-set requirement of up to 15 feet as recommended by the City Engineer and approved by the Land Use Authority. (Amended by Ord. 2004-13, 9/28/04)
13. Curved Streets Preferred. In the design of subdivisions, curving streets shall be preferred to straight streets or rigid ninety degree grid systems.
14. Frontage on Arterial Streets. Driveways or other vehicular accesses to an individual lot that open onto any public street designated by the official City Street Plan as an arterial street may be used as an access if it is recommended by the City Engineer and approved by the Land Use Authority . Turn-arounds, hammerhead or side-entry driveways must be incorporated to ensure that vehicles will not back out on arterial streets. (Amended by Ord. 2004-13, 9/28/04)
15. Wildland Urban Interface.
    1. Access. All developments in the Wildland Urban Interface area shall have more than one access route which provides simultaneous access for emergency equipment and civilian evacuation. The design of access routes shall take into consideration traffic circulation and provide for looping of roads as required to ensure at least two access points. Looped roads with a single access are not allowed.
       
    2. Exceptions. Where terrain features or other physical obstacles make provision of a second access impractical, a single access may be approved by the Land Use Authority after obtaining the recommendation of the Fire Chief and the Recommending Body .
    3. Specifications. All secondary access roads shall have a minimum all weather surface width of not less than twenty (20) feet and an unobstructed vertical clearance of not less than thirteen feet six inches (13' 6") to permit two-way traffic. These provisions will apply in lieu of those provided in Section 503 of the International Fire Code.
16. Intermunicipal Street Connections. There shall be no new street connections to municipalities outside of Alpine City unless the connection is existing or planned as shown on the Transportation Master Plan.

(Ord. 98-19 amending Ord. 78-03)
(Amended by Ord. 2014-12, 7/08/14; Ord. 2016-03, 02/23/16)