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§ 154.067 RELATION TO ADJOINING STREET SYSTEM.
   (A)   A subdivision shall provide for the continuation of the principal streets existing in the adjoining subdivisions or of their proper projection when adjoining property is not subdivided, and such streets shall be of a width not less than the minimum requirements for streets set forth in the regulations of this chapter.
   (B)   Where the plat submitted covers only a part of the subdivider’s tract, drawing of the prospective future street system of the entire tract shall be furnished and the street system of the part submitted shall be considered in light of conformity to the street system of the entire tract.
   (C)   Where a tract is subdivided into lots of an acre or more, the Planning Commission may require an arrangement of lots and streets such as to permit a later subdivision in conformity to the street requirements and other requirements contained in this chapter.
(Prior Code, § 15A-83) (Ord. 914, passed 2-19-2002)
§ 154.068 ACCESS.
   The subdividing of the land shall be such as to provide each lot, by means of public street or way, with satisfactory access to an existing public street or to a thoroughfare as shown in the major street plan, or an official map.
(Prior Code, § 15A-84) (Ord. 914, passed 2-19-2002)
§ 154.069 STREET WIDTHS.
   In order to provide for roads of suitable location, width and improvement to accommodate prospective traffic and afford satisfactory access to emergency services, snow removal, sanitation and road maintenance equipment and to coordinate roads so as to compose a convenient system and avoid undue hardships to adjoining properties, the following minimum design standards for roads are hereby required.
Minimum Design Standards; Residential Streets
 
Lane
Rural1
Minor Residential
Major Residential*
Low Density Residential
Minimum Design Standards; Residential Streets
 
Lane
Rural1
Minor Residential
Major Residential*
Low Density Residential
Curb/gutter (See Note 6.)
No
No
Yes
Yes
No
Design speed
15 mph
20 mph
20 mph
25 mph
30 mph
Parking
No
No
One side
Both sides
No
ROW width
40’
50’
50’
60’
60’
Sidewalk (5’)
No
No
One side
Both sides
No
Traveled width
20’
24’**; 2’ shoulders
29’
38’
24’, 2-ft paved shoulders
 
Minimum Design Standards; Arterial streets
Residential Collector
Major Arterial
Minor Arterial
Minimum Design Standards; Arterial streets
Residential Collector
Major Arterial
Minor Arterial
Curb/gutter
Yes
Yes
Yes
Design speed
25 mph
35 mph+
35 mph
Parking
Optional*
No
No
ROW width
60’
70’
60’
Sidewalk (5’)
Both sides
Both sides
Both sides
Traveled width
40’
48’ *
36’ *
Volume (ADT)
Up to 3,000
Up to 5,000
Up to 3,000
*12’ moving lanes
*Parking may or may not be allowed, on a case-by-case basis, upon recommendation by the Street Superintendent and Chief of Police.
 
Minimum Design Standards; Industrial Roads
Minimum Design Standards; Industrial Roads
Curb/gutter (see Note 6.)
No
Design speed
30 mph
Parking
No
ROW width
60’
Sidewalk (5’)
No
Traveled width
36’, 2-ft. paved shoulders
NOTES:
1.   Residential traveled street width is based on moving lanes of ten feet, parking lanes of nine feet.
2.   Traveled width does not include gutter, when required. Gutter width is included in width of parking lanes.
3.   Where required, sidewalk width shall be five feet, setback five feet from curb or edge of pavement. Wheelchair ramps shall be provided at all intersections.
4.   ADT (average daily traffic) is based on ten trips per single-family residential dwelling unit, per day.
5.   All streets shall be improved with a wearing surface approved by the city.
6.   Curb/gutter is not required only when a drainage plan for surface water discharge has been approved by the Public Works Administrator.
 
(Prior Code, § 15A-85) (Ord. 914, passed 2-19-2002; Ord. 1165, passed 11-19-2012)
§ 154.070 STREET GRADES AND CONDITION.
   (A)   The grades of streets shall not exceed 10%, except under unavoidable conditions approved by the Planning Commission at the time of preliminary plat approval.
   (B)   All streets shall have at least a 0.3% grade.
   (C)   All streets shall be improved with a wearing surface approved by the city.
(Prior Code, § 15A-86) (Ord. 914, passed 2-19-2002)
§ 154.071 STREET CURVES.
   Minimum centerlines of curvature, tangents, curb radiuses and sight distances shall be based on design speed as per the Institute of Transportation Engineers, Traffic Engineering Handbook, current edition.
(Prior Code, § 15A-87) (Ord. 914, passed 2-19-2002)
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