11-1-20: REQUIREMENTS FOR STREETS:
   A.   Bridges. Bridges on public rights-of-way shall meet American Association of State Highway and Transportation Officials standards, including all amendments.
   B.   Grading and Stabilization of Street Rights-Of-Ways. When a new public street is proposed, all trees, brush, stumps, rocks, or other debris shall be cleared from the street right-of-way, except in cases where trees are required to be preserved by the City Administrator. All streets shall be graded to lines, grades and cross sections approved on plans. All unsurfaced, disturbed portions of street rights-of-way shall be stabilized by seeding, fertilizing, and mulching or by another equally effective method. 
   C.   Radius at Street Intersections. The right-of-way radius at street intersections shall be a minimum of 15 feet, with larger radii for streets serving nonresidential development, as approved by the City Administrator. The minimum pavement (curb) radius at street intersections shall be 25 feet.
   D.   Street Grades. No street grade shall be less than one percent. No street grade for an arterial or collector street shall exceed eight percent. No other local street grade shall exceed 12 percent, unless the City Administrator finds that due to topographic conditions, a steeper grade is necessary, in which case the street grade shall not exceed 15 percent. Grades between 12 percent and 15 percent shall not exceed a length of 150 feet.
   E.   Minimum Street Right-Of-Way and Pavement Widths. Street right-of-way and pavement widths shall at minimum meet the following:
STREET TYPE
MINIMUM RIGHT-OF-WAY WIDTH (FEET)
MINIMUM PAVEMENT WIDTH (FEET)
STREET TYPE
MINIMUM RIGHT-OF-WAY WIDTH (FEET)
MINIMUM PAVEMENT WIDTH (FEET)
Major arterial street
100
48
Collector street
60
36
Local street with curb and gutter
50
24
(back of curb to back of curb)
Local street without curb and gutter
60
24
Cul-de-sac turn around radius
50
40
(back of curb)
Alley
20
16
 
   Residential Street with Curb and Gutter
   (Cross Section Detail)
 
   Local Street
   (Rural Cross-Section)
 
   Cul-de-Sac Detail
   F.   Street Horizontal Alignment and Reverse Curves. Street horizontal alignments and reverse curves shall at minimum meet the following:
 
STREET TYPE
MINIMUM HORIZONTAL RADII OF CENTER LINE CURVATURE (FEET)
MINIMUM TANGENTS BETWEEN REVERSE CURVES (FEET)
Major arterial street
1,250
250
Collector street
500
100
Local street with curb and gutter
100
50
Local street without curb and gutter
100
50
Dead-end street
100
50
(Ord. 437, - -2020)