§ 4-2. Geometric standards.

(a)

All street rights-of-way shall conform to the widths designated on the "Major Street Plan", as adopted by the planning commission and on all subsequent amendments and additions thereto, but none shall be less than:

(1)	Freeways .....	300 Ft.
(2)	Arterial streets .....	85 Ft.
(3)	Collector street (curb and gutter) .....	60 Ft.
(4)	Collector street (open ditch) .....	60 Ft.
(5)	Local streets (curb and gutter) .....	50 Ft.
(6)	Local streets (open ditch) .....	60 Ft.
(7)	Marginal access streets (curb and gutter) .....	50 Ft.
(8)	Marginal access streets (open ditch) .....	60 Ft.
(9)	Commercial ind. streets (curb and gutter) .....	50 Ft.
(10)	Commercial ind. streets (open ditch) .....	60 Ft.

 

All street rights-of-way shall have ten-foot wide easements contiguous to the street right-of-way line on each side of the street. Right-of-way widths on open ditch streets must be set to accommodate the depths and side slopes of the side drainage open ditch at all points with sufficient distance between the back of the ditch and the right-of-way line for maintenance and utility access at the discretion of the planning commission and its designated review agent. The planning commission's discretionary criteria for allowing open ditch streets shall be generally based of [on] the proposed new development's proximity to existing subdivisions of either kind of street system or to other proposed new developments in the immediate area.

(b)

Street jogs with centerline offsets of less than 125 feet shall be prohibited.

(c)

A tangent, of at least 100 feet, shall be introduced between reverse curves on arterial and collector streets.

(d)

When connecting street lines deflect from each other at any one point more than ten degrees, they shall be connected by a curve with a radius adequate to insure a sight distance of not less than:

(1)

Three hundred feet for arterial;

(2)

One hundred eighty feet for collectors;

(3)

One hundred feet for all others except in special cases where the planning commission may require a greater radius.

(e)

Streets shall be laid out so as to intersect as nearly as possible at right angles, and no street shall intersect any other street at less than 75 degrees.

(f)

Dead-end streets should be kept to a minimum, but when designed as such permanently, they shall not be longer than 500 feet and shall be provided at the closed end with a turnaround having a minimum inside pavement turning radius of at least 35 feet, and a right-of-way radius of at least 68 feet. Pavement width at the turnaround shall be at least the width of the street is [it] serves, but at the option of the subdivider it may be totally paved.

(g)

Half-streets shall be prohibited, except for boulevards that may be deemed essential to reasonable development by the planning commission. In such cases, when the adjacent land is subdivided the other half of the boulevard shall be platted within that tract.

(Ord. No. 939, 11-10-97)