(a) General. All aspects of street design shall meet requirements of the City Engineer, Service Director and these Regulations. Nonstandard right-of-way cross sections or features such as islands, medians, boulevards, eyebrows, walls, fences, trees, etc. shall be subject to approval as a part of the preliminary plat.
(b) Subdivision and Street Names. Subdivision and street names shall not duplicate or closely approximate names of existing subdivisions or streets.
(c) Additional Street Improvements. Reserve, dedication, improvement and/or construction of part or all of any street, intersection, alley or perimeter street may be required to minimize future hardship or expense to the public or abutting property owners. Funds in lieu of improvement may be considered or required.
(d) Right-of-Way Requirements. Arrangement, character, width, grade and location of streets shall conform to the Thoroughfare Plan and amendments thereof and other adopted City plans as appropriate. When a subdivision abuts a public street, additional right-of-way in accordance with the Thoroughfare Plan may be required.
(e) Access Management. Traffic safety measures and location and number of access points onto existing and proposed streets shall be as required by the City Engineer and Service Director. In order to improve access control or safety, the following may be required:
(1) Marginal access streets or frontage roads.
(2) Reverse frontage lots with access on interior streets.
(3) Buffering and screening, or other treatment for separation of through traffic and impacts from development areas.
(4) Driveways with turnarounds.
(5) Combined access points to the public right-of-way.
(6) Restrictions on the number and location of drives.
(f) Street Arrangement. The arrangement of streets shall consider existing and planned streets, topographical conditions, public convenience and safety and proposed land use. Provision shall be made for continuation of streets where adjoining land is not subdivided. Minor residential streets shall be designed as to discourage through traffic.
(g) Subdivisions Abutting Physical Barriers. Where a subdivision borders on or contains a limited access highway right-of-way, railroad right-of-way or other physical barrier, the following may be required:
(1) Frontage roads or streets.
(2) Landscaping, screening and/or noise abatement provision.
(h) Cul-de-Sacs and No Outlet Street Systems. A cul-de-sac or no outlet street system shall not exceed 700 feet in length unless approved by the Fire Chief. Cul-de-sac bulb diameter shall be 104 feet for right-of-way and 80 feet for pavement.
(i) Temporary Stub Streets. In multi-phase projects, short stub streets for future extension may be allowed or required. Stub streets shall meet the following conditions:
(1) The stub shall not exceed more than 200 feet from intersection centerline;
(2) A potential future extension of the street is identified and its connection to an existing or planned street deemed feasible and practical by the City; and
(3) The plat contains this note: “Stub streets are intended to be extended and opened to traffic when adjacent lands are developed. No vehicular access to be in effect until such time as the public street is extended and dedicated by plat or deed.”
(j) Street Classification and Design. Streets shall be classified and designed in accordance with the following:
STREET STANDARDS | |||||
Classification | Minimum Pavement (Feet) | Minimum Right-of-Way (Feet) | Minimum Center Line Radius (Feet) | Maximum Grade (%) | Minimum Grade (%) |
Major Arterial | 54 | 100 | 1,200 | 4 | 0.5 |
Minor Arterial | 40 | 80 | 800 | 5 | 0.5 |
Collector | 36-40 | 60 | 450 | 6 | 0.8 |
Other (local, frontage, loop or cul-de-sac) | |||||
(with curb) | 26 | 50 | 185 | 7 | 1.0 |
(without curb) | 22 | 60 | 200 | 8 | 1.0 |
Alley | 16 | 20 | |||
Note: Provide 100 foot tangent between reverse curves on arterial or collectors | |||||
INTERSECTION STANDARDS | ||
Design Element | Standard | |
(1) | Maximum approach speed | 25 mph |
(2) | Clear sight distance | |
(Length along each approach leg) | 100 feet | |
(3) | Profile grade approach to intersection | 3% (maximum) |
(4) | Minimum angle of intersection | 75 degrees |
Streets shall remain in the angle of intersection for at least 100 feet | (90 degrees preferred) | |
(5) | Minimum curb return radius | |
A. Curbed (face of curb) | 20 feet | |
B. Uncurbed (edge of pavement) | 30 feet | |
(6) | Minimum centerline offset of adjacent intersections | |
A. Local-local | 150 feet | |
B. Local-collector | 200 feet | |
C. Local-arterial | 300 feet | |
D. Collector-collector | 300 feet | |
E. Collector-arterial | 1200 feet | |
(Ord. 95-36. Passed 6-20-95.)