(A) General. The proposed subdivision shall conform to:
(1) The provisions of AS 29.40 and AS 40.15;
(2) Title 8 UCO; and
(3) The Comprehensive Plan.
(B) Streets.
(1) General.
(a) The streets shall be designed and located in relation to existing and planned streets, topographical conditions, and natural terrain features (such as streams and existing growth), public convenience, and safety and in their appropriate relation to the proposed uses of the land to be served by such streets.
(b) Street right-of-ways shall be wide enough to provide for the present travel surfaces, future road expansion, sidewalks, and access for installation and maintenance of street drainage facilities or other utilities.
(c) Construction of all streets shall conform to the standard specifications as established by the “City of Unalaska Standard Specifications for Construction of Streets.” This includes, but is not limited to grades, vertical and horizontal sight distances, tangents, and intersection designs.
(d) Right-of-ways shall not have permanent structures built upon them by property owners.
(2) Types of streets.
(a) Arterial streets shall be properly integrated with the existing and proposed system of arterial streets and highways. The arterial street shall have a minimum sixty-foot width with a minimum travel surface of forty feet unless otherwise specified by the Platting Authority;
(b) Collector streets shall be properly related to specific traffic generated by such uses as schools, churches, small shopping areas, population centers, and the access to arterial streets. Collector streets shall have a minimum fifty-foot width with a minimum travel surface of forty feet unless otherwise specified by the Platting Authority;
(c) Minor streets, including cul-de-sacs, shall be laid out to conform as much as possible to topography, to discourage use by through-traffic, to provide the minimum amount of street necessary to provide convenient, safe access to residential lots, and to provide an efficient route for utility systems. Minor streets shall have a minimum forty-foot width with a minimum travel surface of twenty-four to thirty-six feet unless otherwise specified by the Platting Authority;
(d) Alleys should be used only in commercial areas for delivery and services. Alleys may be used in residential areas when approved by the Board. Alleys shall have a twenty-foot width with a travel surface of sixteen to twenty feet unless otherwise specified by the Platting Authority.
(e) Cul-de-sacs shall have a minimum rights-of-way width of 40 feet, leading to a cul-de-sac turn-around with a minimum radius of 50 feet.
(3) Half-streets. Where a street is adjacent to a subdivision, the other half of that street shall be dedicated by the subdivider. No half streets within new subdivisions shall be allowed, unless specifically approved by the Board.
(4) Crosswalks. Pedestrian crosswalks not less than fifteen-feet wide may be required by the Board where deemed necessary to provide for pedestrian access to schools, shopping centers, and playgrounds, or other community facilities.
(5) Street names. See Chapter 15.08 “Street Names.”
(C) Blocks. The length, width, and shape of blocks shall be such as are appropriate for the topography, locality, and type of development.
(D) Lots.
(1) General. The size, shape, and orientation of lots shall be appropriate for the location of the subdivision and for the type of development and use contemplated.
(2) Dimensions.
(a) Lot dimensions shall conform to the requirements of Chapter 8.12, “Zoning,” provided that no lot shall be less than 10,000 square feet in area. If requirements identified in § 8.08.070(A)(3)(d) have been addressed, residential lots less than 10,000 square feet but greater than 6,000 square feet may be permitted. See Chapter 8.12 for lot size requirements in different districts.
(b) Lots shall be designed with a suitable proportion between width and depth. Long and narrow, or wide and shallow lots are undesirable. Normal depth shall not exceed 2 1/2 times width, or be less than 85 feet. Width of all lots shall not be less than 60 feet. See Chapter 8.12, “Zoning,” for lot dimension requirements in different districts.
(c) Lots laid out for commercial or industrial purposes shall be adequate to provide for the off-street service and parking facilities required by the type of development.
(d) No lots, tracts, or parcels shall be created or designed which would create any non-conforming setbacks as they relate to any physical improvements which are subject to setback, building separation, or other dimensional provisions.
(3) Corner lots. Corner lots should be large enough to allow full setback of buildings from both streets as required.
(4) Access. Every lot shall front or abut on a publicly dedicated street.
(5) Lot lines. Side lines of lots shall be substantially at right angles or radial to the side of the streets.
(6) Lot remnants. All remnants of lots left over after subdividing of a large tract must be added to adjacent lots or right-of-way rather than be allowed to remain as unusable parcels.
(7) Buffer zones and greenbelts. Buffer zones and/or greenbelts may be required by the Platting Authority.
(Ord. No. 2001-04, passed 5-8-01; Am. Ord. 2005-09, passed 4-26-05; Am. Ord. 2012-07, passed 9-11-12)