(a) Streets.
(1) All streets in a subdivision shall be classified and governed in accordance with Section 1211.02, Table 2 located in this section, except for primary and secondary thoroughfares in which case reference should be made to the appropriate Thoroughfare Plan available in the offices of the Planning Board's staff or Clark County Planning Commission.
(2) All street pavements shall intersect each other as near to right angles as possible. At right angle intersections, the curb radius shall be 25 feet at intersections involving two 50-foot rights-of-way. At all other street intersections, the curb radius shall be as specified by the City Engineer. At intersections where the angle is other than 90 degrees, the City Engineer shall determine acceptable curb radius.
(3) When a cul-de-sac is permitted with a length greater than or equal to 300 feet, the acceptable minimum road surface radius within the turnaround shall be forty-five (45) feet. For a cul-de-sac with a length less than 300 feet, the acceptable minimum road surface within the turnaround shall be forty (40) feet. The surface configuration for a temporary or "T" turnaround may be as illustrated in the reference manual located in the Department of Community Development.
(4) The minimum tangent between curves of a reverse curve in a collector street shall be 100 feet. The minimum tangent between curves of a reverse curve in a minor street shall be 50 feet except no tangent shall be required on minor streets if either of the curves has a degree of curvature of one degree or less (radius equal to or greater than 5,792.58 feet).
(b) Drainage. Where curb and gutters are involved, catch basins shall be constructed on the upstream side of the crosswalks, at all low points in the street at points where drainage ditches enter the area being developed, and on streets at distances of approximately 400 feet. However, if due to topographic features, the contributing storm flow is relatively small, the spacing of catch basins may be increased.
Table 2
STREETS
Type of Street | Minimum R.O.W. Width | Minimum Pavement Width1 | Maximum Centerline Grade | Minimum Centerline Grade | Minimum Centerline Radius |
Collector | 60’ | 40’2 | 6% | 0.5% | 300’ |
Minor | 50’ | 30’2 | 10% | 0.5% | 65’ |
Minimum Sight Distance
From Driver to Object in Street4 | From Driver in Intersecting Street to Oncoming Vehicle | |
Collector 25 mph3 35 mph3 | 160’ 240’ | 225’ 300’ |
Minor 25 mph | 160’ | 200’ |
Maximum Street Grades at Intersection
Collector intersecting Collector or Arterial—3% for 100’ from nearest pavement line of intersecting collector or arterial. |
Minor intersecting Collector or Arterial—3% for 50’ from nearest pavement line of intersecting collector or arterial. |
Minor intersecting Minor—3% for 25’ from nearest pavement line of intersecting minor street. |
1For purposes of determining pavement width, curb & gutter shall be considered pavement.
2Collector: 30’ wide pavement with berms and side ditches may be permitted by the Director based on, but not necessarily limited to, the following conditions: each lot fronting on the street having frontage of not less than 100’ and area of not less than 15,000 square feet; continuity with adjacent development and soil conditions and total area drainage being such as to permit effective use of such ditches for street drainage.
Minor: 24’ wide pavement with berms and side ditches may be permitted by the Director based on same as above.
3Applicable prima facia speed limit.
4Eye level 3.75 feet above pavement to object 6 inches above pavement.
(Ord. 22-113. Passed 4-12-2022.)