§ 3.51. Off-street parking lot layout, construction and maintenance.

Whenever the required off-street parking requires the building of a parking lot, and wherever a parking lot is built, such parking lot shall be laid out, constructed, and maintained in accordance with the following regulations:

3.51.01. Dimensions of parking spaces and parking lot drive aisles.

A.

The minimum number of off-street parking spaces that are required in section 3.50.10 shall have parking spaces and parking lot drive aisle dimensions designed in accordance with Table 1 (below). Such spaces shall be designated by painted lines or curb markers.

Table 1: Minimum Parking Space and Parking Lot Drive Aisle Dimensions

Parking Angle	Depth to Wall	Depth to Curb	Depth to Interlock	Stall Width	Aisle Width
45 degrees	16.5'	15.0'	14.5'	9.0'	15.0' One-way
60 degrees	18.0'	16.5'	16.5'	9.0'	18.0' One-way
75 degrees	18.5'	17.5'	17.5'	9.0'	22.0' One-way 26.0' Two-way
90 degrees	17.5'	15.5'	17.5'	9.0'	26.0 One-way 26.0 Two-way
Parallel	22.5'	20.5'	22.5'	9.0'	15.0' Min. one-way 20.0' Max. one-way 25.0' Min. two-way 30.0' Max. two-way
Notes:
• Stall dimensions are shown in feet.
• Stall depths are measured perpendicular to aisle.
• Stall depths, stall widths, and aisle widths for parking angles, other than those indicated, shall be consistent with the above values and are subject to the approval of the department of engineering and public works for the county.
• See Figure 1 (below) for minimum parking dimensions and layout guidance.

 

B.

Exception to minimize size: The county department of engineering and public works may approve sizes smaller than the parking stall dimensions listed in Table 1 based on review of individual site plans.

C.

Turnaround requirement: Except for houses and duplexes on local roads, all areas devoted to off-street parking shall be so designed and be of such size that no vehicle is required to back into a public street to obtain egress.

3.51.02. Driveway openings. Clearly defined driveways shall be provided for ingress and egress to the parking lot which shall meet the following requirements:

A.

The width of all driveway openings shall be within the minimum and maximum limits as specified in Table 2 (below) or as required by the state department of transportation and/or the county department of engineering and public works.

Table 2. Width Design Controls

Land Use/Driveway Type	Width (W)		Radius (R) or Flare (F)
	Minimum	Maximum	Minimum	Maximum
Residential (Single Family or Duplex)	10 ft.	20 ft.	3 ft.	5 ft.
All Other Uses
• Ramp or Radius Type:
º One-way	15 ft.	20 ft.	10 ft.	25 ft.
º Two-way	25 ft.	30 ft.	10 ft.	25 ft.
• Street Type (L)	40 ft.	60 ft.	25 ft.	50 ft.
Where developments are expected to serve a substantial amount of truck traffic (5 or more per day or 25 or more per week) or large trucks (3 or more axles), these dimensions may be increased by up to 10 feet.
The number of lanes, lane widths, curb radii, and other design features to be determined as part of a traffic access and impact study prepared by a qualified transportation engineer.

 

Figure 2 illustrates a typical ramp, radius, and street type driveway design.

B.

Minimum distance from an adjoining interior lot line and a driveway opening - at the street right-of-way line:

1.

Residential uses: Five feet.

2.

Non-residential uses: Equal to the radius or flare, or as recommended by the state department of transportation and/or the director of engineering and public works for the county.

C.

Minimum distance from the intersection of street right-of-way lines on a corner lot and a driveway opening at the right-of-way line is described in Table 3, Corner Clearance Requirements (below). The county department of engineering and public works may require distances that exceed those provided in Table 3 if a traffic impact analysis or similar qualified study indicates such a need.

Table 3: Corner Clearance Requirements

For Lots of Record On or Before the Adopted Date of the Driveway Policy (09/23/1996)
Classification of Intersecting Streets	Functional Classification of Street to be Accessed
	Arterial	Collector	Local
Arterial	100 ft. or "a"	75 ft. or "b"	50 ft. or "c"
Collector	75 ft. or "a"	50 ft. or "b"	25 ft. or "c"
Local	50 ft. or "a"	25 ft. or "b"	25 ft. or "c"

 

For Lots Recorded After the Adopted Date of the Driveway Policy (09/23/1996)
Classification of Intersecting Streets	Functional Classification of Street to be Accessed
	Arterial	Collector	Local
Arterial	200 ft.	150 ft.	100 ft.
Collector	150 ft.	100 ft.	50 ft.
Local	100 ft.	50 ft.	50 ft.
"a" - Lot frontage / 2 whichever is greater but not to exceed 200 feet "b" - Lot frontage / 3 whichever is greater but not to exceed 200 feet "c" - Lot frontage / 4 whichever is greater but not to exceed 200 feet

 

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3.51.03—3.51.05. Reserved.

3.51.06. Paving. All areas devoted to permanent off-street parking as required under this section shall be of a sealed-surface construction such as plant mix asphalt, penetrating asphalt or concrete paving, and maintained in such a manner that no dust will result from continuous use.

3.51.07. Drainage. The parking lot shall be drained to eliminate surface water.

3.51.08. Parking lot setbacks.

A.

Where the parking lot abuts side lot lines of a residential zone, there shall be established a setback line ten (10) feet from such side lot lines.

B.

Where the parking lot is located in a nonresidential zone but is contiguous to a residential zone which has common frontage in the same block with the parking lot, there shall be established a minimum setback from the street lot line for the parking lot which is the same as is required in the contiguous residential zone.

C.

Where the parking lot abuts rear property lines of a residential zone, there shall be established a setback line five (5) feet from the rear lot line.

D.

Where parking is to be provided in the front yard of a multi-dwelling structure or development, there shall be established a setback line ten (10) feet from the street lot line. The land between the setback line and the lot line in a parking lot is for the purpose of these regulations called a buffer strip. The ground in the front buffer strip shall be prepared and shall be planted with trees, shrubs and grass.

3.51.09. Parking lot entrance on street. Wherever a parking layout plan is required by this section no building permit shall be issued prior to approval of entrance to affected streets and/or state highways by the appropriate county and/or state official.

3.51.10. Parking in a more restrictive zone. The planning commission shall have the authority to approve off-street parking as a use-on-review in any zone which is more restrictive than that required for the major land use it is intended to serve subject to the preceding conditions. The following conditions shall also apply:

A.

The parking lot shall not have access from the more restrictive zone.

B.

All sides of the lot, except those openings for ingress and egress, shall be enclosed with an opaque ornamental fence, wall or dense evergreen hedge having a height of not less than five (5) feet nor more than six (6) feet. Such fence, wall or hedge shall be maintained in good condition. Bumper stops shall be provided so as to prevent any vehicle from projecting over the buffer strip.

(Ord. No. O-06-7-101, § 1(Exh. A), 8-28-06; Ord. No. O-12-9-102, § 1(Exh. A), 10-22-12; Ord. No. O-15-5-101 , § 1(Exh. A), 6-22-15)