§ 22-22. Streets.

The course, width, grade and location of all streets shall conform to the comprehensive plan and shall be considered in their relation to existing and planned streets, to topographic conditions, to public convenience and safety, and in their appropriate relation to the proposed uses of the land to be served by such street and shall conform to the following design standards:

(1)

Street rights-of-way shall be a minimum of sixty (60) feet to accommodate public and private utilities, sidewalks, and tree planting.

Street pavement depth shall be a minimum of six (6) inch Portland cement concrete. The asphaltic concrete equivalencies contained in this ordinance may be substituted for Portland cement concrete.

Street pavement width shall be a minimum of twenty-eight (28) feet. Variances to this requirement may be made to accommodate affordable housing or other public interest projects. In these cases, no on-street parking on streets of lesser widths, shall be permitted and suitable off-street parking shall be required. In these cases, certain standards for street widths, parking spaces, lot sizes, etc., may be permitted, but shall be determined under the regulatory discretion of the planning and zoning commission and city council.

(2)

The arrangement of streets in a subdivision shall:

(a)

Provide for the continuation of existing principal streets in surrounding areas, or

(b)

Conform to the major thoroughfare plan where applicable, or

(c)

Conform to topographic or other conditions where continuance of projection of existing streets does not control.

(3)

Local streets shall be laid out so that their use by through traffic will be discouraged. Streets and lots shall be designed to conform to the natural topography with streets following valleys wherever possible, requiring minimal grading, and keep surface water in storm drainage systems as opposed to crossing private property wherever possible.

(4)

Street intersections with centerline offsets of less than one hundred fifty (150) feet shall be prohibited.

(5)

A tangent shall be introduced between reverse curves on streets.

(6)

The following street standards shall prevail in the design and construction of subdivisions in the city:

Type of Street	R.O.W. Width	Initial Pavement Width	Minimum Radius of Horizontal Curves	Minimum Sight Distance
Principal Arterial	80 ft.	36 ft.	350 ft.	500 ft.
Minor Arterial	60 ft.	36 ft.	250 ft.	300 ft.
Collector	60 ft.	36 ft.	250 ft.	300 ft.
Local Commercial Or industrial	60 ft.	36 ft.	150 ft.	200 ft.
Local residential	60 ft.	28 ft.	150 ft.	200 ft.

 

(7)

Streets shall be laid out to intersect as nearly as possible at right angles and no street shall intersect any other street at less than seventy-five (75) degrees.

(8)

Alleys shall not be permitted in residential districts, nor shall reserve strips controlling access to streets be permitted except under conditions approved by the plan commission.

(9)

Whenever a subdivision will contain a street that is designated on the major street plan as an existing or proposed arterial or collector street, or a commercial, or industrial street, then the subdivider shall dedicate the right-of-way, follow the geometric standards, and install improvements as set out in item (6) in this section.

The city shall pay the cost for the additional width of pavement required for arterial and collector streets. This cost shall be computed on the additional expense involved in placing the extra width required beyond twenty-eight (28) feet and shall include grading.

(10)

All streets which are designated as permanent dead end shall be terminated by a cul-de-sac having a street line radius of sixty (60) feet and pavement radius of forty-nine (49) feet, unless permitted by the city's planning and zoning commission and the city council. In R-1 residential zones, cul-de-sac length should be limited to twenty (20) houses. In all other zones, cul-de-sac length shall be limited to five hundred (500) feet. All new cul-de-sacs must be designed to provide only hard surfaces on the inside of the curbed area. No grass, dirt, or landscaped areas will be allowed. Street stubs shall be platted and paved at intervals along the boundaries of the subdivision in order that vehicle and pedestrian access will be provided to future subdivisions adjacent. The spacing and location of the street stubs shall be determined by topography, maximum block length requirement of section 22-104, the logical future street patterns of the adjacent property and the street and lot pattern of the subject subdivision.

Street stubs shall be platted and paved at intervals along the boundaries of the subdivision in order that vehicle and pedestrian access will be provided to future subdivisions adjacent. The spacing and location of the street stubs shall be determined by topography, maximum block length requirement of section 22-104, the logical future street patterns of the adjacent property and the street and lot pattern of the subject subdivision.

(Ord. No. 11367, 2-1-99; Ord. No. 11813, 11-6-2007; Ord. No. 12156 , § 3, 4-20-2015)