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Chapter 6 Mobility Standards Part 2 Streets and Rights-of-Way Page 2 of 3

Table 6.2.2

* 5 ft. sidewalk width is acceptable in some situations
4 Local level through streets that have no more than 20 single family lots when fully developed may be built to cul-de-sac right-of-way and pavement width standards, with a finding from the Director of Works that through traffic is adequately accommodated.

3. Exceptions – The Director of Works may approve exceptions from the standards of Tables 6.2.1 and 6.2.2 where new development extends an established pattern of roadway design that has been shown to adequately serve the area’s transportation needs. The Planning Commission, with comments from the Director of Works, may approve deviations from the standards (reductions and exceedences) of Table 6.2.1 and Table 6.2.2.

6.2.7 Construction Standards

Construction plan showing materials, methods of construction and detailed specifications for all required physical improvements, for public and private roadways, shall be submitted to and approved by the Director of Works before construction is begun.

1. Materials - The engineer shall be guided by sound engineering practices in the selection of materials for street construction and other physical improvements. Wearing surfaces shall be limited to high-type asphalt or Portland cement concrete. Base courses may be of, but not limited to, the following: Portland cement concrete, hot mixed asphalt concrete, crushed limestone, stabilization of acceptable soils with soil-cement, asphalt, lime or other recognized materials or combinations thereof. Sub-base stabilization with recognized materials may also be used.
2. Design Standards - The engineer designing the subdivision and the approving agency shall be guided by recognized procedures for determining adequacy of the various structures. Examples and guidelines are as follows:
   1. Drainage - MSD Design Criteria or the Kentucky Department of Highways Drainage Manual will be acceptable for determining hydraulic adequacy of drainage facilities.
   2. Structures - Design shall be by acceptable methods using AASHTO design loading as follows:
      1. Local and Cul-de-sac; H - 15
      2. Collector; H - 20
      3. Arterial and All industrial and Commercial Zoning Districts; As Required by Director of Works
   3. Street Pavement and Base - Design methods suggested by, but not limited to, trade associations, such as Asphalt Institute, Portland Cement Association, National Limestone Institute, and others shall be used. The following basic elements shall be considered: soil characteristics, design life, traffic usage, material strengths and provisions for maintenance.
   4. Pavement Design Criteria - Pavement design for all street classifications shall conform to the current pavement design standards established by the Director of Works.
   5. Road Shoulder Design - The design of new roadway shoulders must comply with the most recent AASHTO publication.
   6. Construction Sequencing- The construction phasing of all sections within an approved preliminary plan shall be contiguous to completed subdivision sections. Any deviation from this scheduling must be approved by the Director of Works prior to beginning of construction.
   7. Construction Specifications - The construction plans shall include complete specifications to guide construction and fully explain the intent of the drawings. Because of general familiarity by contractors, the current edition of MSD or Kentucky Transportation Cabinet Standard Specifications for Road and Bridge Construction or other adopted standards may be incorporated by reference to the extent applicable, or separate detail specifications may be written to satisfy the conditions. In any event, complete specifications shall be provided which include, but are not limited to the following:
      1. Materials and requirements for acceptance
      2. Methods of construction, and
      3. Basis for acceptance or rejection of the project
   8. Private Roadways – All private roadways shall meet the right-of-way width and construction standards of sections 6.2.6 and 6.2.7, unless the Planning Director, with concurrence of the Director of Works, approves in writing a waiver of said standards, or unless eligible for the standards contained in section 6.2.8. Private streets/access easements located in the OR, OR-1, OR-2, OR-3, OTF, CN, CR, C-1, C-2, C-3, CM, EZ-1, M-1, M-2, M-3, PD, PRO and PEC zones shall make all dedications and complete all physical improvements or provide a financial instrument adequate to ensure completion of the improvements as required under these regulations before the Commission may approve the subdivision plat.
   9. Sidewalks shall maintain an unobstructed passage way (clear of fire hydrants, street trees, utility poles, other obstructions) at least 4 feet wide, or other dimension as approved by the Director of Works.

6.2.8 Private Roadways

1. Standards – Private roadways serving no more than five lots restricted for single family residential use may be constructed in accordance with the following standards:
   
   Minimum Physical Improvements for Private Roadways
   
   

   Number of Lots		Private Street
   1 - 2 lots		P 18/R30
   3 - 5 lots		P 18/R50

   
   P = Pavement width
   R = Right-of-way or easement width
2. Grade - No private access easement grade shall be less than one percent nor more than ten percent, unless a different grade is expressly approved by the Commission and the Director of Works because of special topographical conditions.
3. Minimum Pavement Standards - The Pavement/roadway design shall conform to the minimum physical improvements for private access easements issued by the Director of Works and to the requirements of the Louisville Metro Code of Ordinances, Chapter 94.80 - 94.82.
4. Lots - All applicable zoning regulations, as pertaining to minimum yard requirements, shall be interpreted as being measured from the nearest boundary of the private access easement.
   
   
   Right-of-Way Illustrations
   
   The following illustrations depict right-of-way configurations based on the standards contained in Tables 6.2.1 and 6.2.2. Streets developed prior to adoption of these standards may diverge significantly from the illustrations. Subdivisions and new developments along pre-existing routes may be required to dedicate right-of-way or make improvements in accordance with the Tables 6.2.1 and 6.2.2 standards and the following illustrations.
   
   Notes: (applicable to all roadway types)
   1. Greater or lesser right-of-way widths may be needed, depending on topography and other circumstances.
   2. Shared use paths and bicycle lanes will be provided in selected locations based on the Bicycle and Pedestrian Plan. These facilities will not be constructed along every roadway. A wide curb lane may substitute for a bike lane, if the standards of the “Kentucky Transportation Cabinet Pedestrian and Bicycle Task Force Policy Recommendations” are met. Bike lanes and shared use paths are shown with various street types and configurations for purposes of illustration; these renderings are not intended to limit the type of bicycle facility provided with a certain road configuration.
   3. Type, size and location of landscaping within the right-of-way must be in accordance with the requirements of the entity responsible for the right-of-way. Street trees shall be placed in accordance with requirements of the agency having jurisdiction over the roadway and applicable form district standards. Ground cover and low growing vegetation (two feet maximum height) compatible with utility line maintenance are recommended for the verge.
   4. Sidewalk widths and setbacks vary according to form district; refer to the applicable form district regulation. A minimum five feet width is required in all form districts other than local level roadways in the Neighborhood Form District. Meandering alignment of walkways is permitted.

13Major Arterial
Urban Type A: Two-way, four-lane with median and bike lane / No parking

12Major Arterial
Urban "Type B: Two-way, four-lane and turning lane / shared use path / No Parking
(*) shared use path (serving pedestrians and bicycles) may be located within the arterial right-of-way or on separate alignment, depending on factors such as frequency of street intersections and curb cuts.