(A) Plans required.
(1) The subdivider shall submit plans and specifications prepared by a registered engineer showing the proposed street system. The plans shall show the proposed right-of-way width, pavement width, location and the proposed alignment, grade, geometric details and typical cross-sections of each proposed street, including curbs and gutters and sidewalks (where applicable). The plans and specifications shall show for each proposed street design criteria such as street classification, pavement classification and thickness, and classification and thickness of base and subbase materials.
(2) In addition, the following information shall be required.
(a) The plans and profiles of all surrounding streets which are to connect to a street in the proposed subdivision (for a distance of 100 feet back from the boundary line of the proposed subdivision).
(b) All profiles shall be drawn at a scale not to exceed one inch equals 100 feet horizontal and one inch equals ten feet vertical.
(c) Elevations shall be shown at all vertical P.I.(s) and percent grade between P.I.
(d) Elevations shall be tied to a bench mark (U.S.G.S. or other bench marks when available), when, within a reasonable distance (as determined by the Planning Commission’s duly authorized representative) and shall be shown on the improvement drawings.
(e) Details of curb and gutter, sidewalks, street section and paving shall be shown.
(B) Pavement specifications. All streets shall be paved with portland cement concrete or asphalt concrete and constructed in accordance with the specifications in App. A or B (whichever is applicable) of these regulations.
(C) Minimum pavement widths. Pavement widths shall be measured from back of curb to back of curb, or if no curbs are required, then measurements shall include the entire paved surface. Minimum pavement widths for each street shall be as shown in § 157.104, Table 2, of this chapter and laid out in the manner indicated by the typical street cross-sections shown in App. C of these regulations.
(D) Curbs and gutters.
(1) The subdivider shall construct vertical curbs, at least six inches in height or roll curbs four inches in height, for all residential streets (where applicable) as identified in § 157.104, Table 2, of this chapter. For streets to be constructed of asphalt concrete, curb and gutter shall be constructed according to the typical section detail in App. C of this chapter.
(2) All curbs and gutters shall be constructed of portland cement concrete and in accordance with the specifications in App. A of this chapter and typical cross-sections in App. C of this chapter.
(E) Curb radii. The minimum curb radius at intersections shall be as follows:
Type of Street Intersection* | Minimum Curve Radius (in Feet) |
Arterial - arterial | ** |
Collector - collector | 30 |
Local - local or subcollector | 25 |
Subcollector - subcollector | 25 |
Subcollector - collector | 30 |
NOTES TO TABLE: * In the case of local or collector streets located in commercial or industrial areas, the minimum curb radii shall be increased to 50 feet. ** Shall be based on current design standards of the state’s Department of Transportation. | |
(F) Sidewalks. Sidewalks shall be required as identified in § 157.104, Table 2, of these regulations in all areas identified in the county’s Comprehensive Plan as urban service areas, which will require urban type services. Sidewalks shall be constructed of portland cement concrete in accordance with the specifications of App. A of these regulations, at least four inches thick and increased to five inches of thickness when included as part of a driveway. All sidewalks shall be constructed with a minimum width of four feet and this width increased to five feet for streets in multi- family residential, commercial and industrial areas, where pedestrian traffic volume indicates the need for this additional width. Sidewalks shall be laid out in the manner indicated by the typical cross-sections shown in App. C of this chapter.
TABLE 2
IMPROVEMENT REQUIREMENTS BY TYPE OF STREET SERVING RESIDENTIAL SUBDIVISION (F)
Type of Street | Number of Lots Served | Right- of-Way (in feet) | Pavement Width (in feet) | Curb and Gutter (C) | Sidewalks along Street (B) | On-Street Parking | Minimum Front Yard Depth Required (in feet) | Off- treet Parking Required | Minimum Lot Width Required (in feet) | Minimum Pavement Thickness |
Courts - dead-end Typical Optional | Under 7 | 40 40 | 22 20 | Yes Yes | None None | One Side None | (A) 35 | (A) 4 Spaces (E) | (A) (A) | (G) |
Cul-de-sac - dead-end Typical Optional | 7 - 25 | 50 40 | 25 20 | Yes Yes | One Side One Side | One Side None | (A) 50 | (A) 4 Spaces (E) | (A) (A) | (G) |
Local Typical Optional | Under 100 | 50 40 | 25 20 | Yes Yes | Both Sides Both Sides (B) | One Side None | (A) 50 | (A) 4 Spaces (E) | (A) 100 (H) | (G) |
Subcollector Typical Optional | 100 - 500 | 50 40 | 28 22 | Yes Yes | Both Sides Both Sides (B) | One Side None | (A) 50 | (A) 4 Spaces (E) | (A) 100 | (G) |
Collector (D) Typical Optional | Over 500 | 60 60 | 30 22 | Yes Yes | Both Sides Both Sides (B) | One Side None | (A) 50 | (A) 4 Spaces (E) | (A) 100 | (G) |
NOTES TO TABLE:
Where streets are to serve industrial or commercial areas, the pavement design shall be based on a study prepared by the subdivider’s engineer, projecting the type of vehicles using the street and traffic volumes and approved by the Planning Commission’s duly authorized representative. (A) Minimum as per applicable zoning ordinance requirements. (B) Sidewalks may be permitted on only 1 side of the street, providing the minimum front yard depth is 50 feet and the minimum lot width is 100 feet. When subdivisions are designed to provide pedestrian walkways to the rear of lots or in other locations other than along the street, the Planning Commission or its duly authorized representative may waive sidewalks along the streets. In the case where local streets serving less than 25 lots, sidewalks may be permitted on 1 side of the street. (C) Shoulders and side ditches may be permitted and designed in accordance with these regulations (see App. C); provided, the minimum front yard depth is 50 feet, the minimum lot width is 100 feet, the minimum right-of-way is increased by 10 feet, except for collector streets. (D) Driveway access points along collector streets shall be discouraged, however, if permitted, shall be spaced not less than 200 feet apart. (E) Individual off-street parking spaces shall be laid out in such a manner to insure that each space has unrestricted ingress and egress to a public street (for example, not blocked from gaining access to the street via another parked vehicle). (F) Arterial streets shall be designed in accordance with the requirements of the Kentucky Department of Transportation. (G) Minimum pavement thickness for portland cement concrete and asphalt concrete shall be designed in accordance with App. A, § 16, Table 3, and App. B, § 6, Table 6, respectively. (H) In the case where local streets serving less than 25 lots, the minimum lot width shall be as per the applicable zoning ordinance requirements. | ||||||||||
(G) Parking. Parking on any street where pavement width is less than 36 feet shall be limited to one side of the street. Parking lanes shall not be shifted from one side to the other from block to block or, where the proposed street is the extension of an existing street, the parking lane shall extend continuously on the same side of the street. If practicable, the parking lane shall be located on the opposite side of the street from where the fire hydrant is located.
(H) Cul-de-sac and dead-end streets. Cul-de-sac courts and dead-end streets shall be designed in accordance with the typical design details as per App. C of this chapter. However, if conditions warrant, other turn-around designs may be permitted by the Planning Commission or its duly authorized representative. If such street is of a temporary nature and a further extension into adjacent land is anticipated, then the turn around, beyond normal street width, shall be in the nature of an easement of the premises included in the turn around, as per the typical design in App. C of this chapter. Such easement may be vacated to abutting property owners when the dead-end street is legally extended into adjacent land. If such dead-end street serves four lots or less, no temporary turn around will be required.
(I) Construction of required pavement width on existing streets. Where a subdivision is located on only one side of an existing street, and where the pavement width of such existing street is less than that required by these regulations, the subdivider shall be required to construct one-half the required pavement width, as per these regulations, along the side fronting his property on such street.
(1984 Code, § 157.74) (Ord. O-86-78, passed 8-17-1978)