A. Conformance With Master Street Plan: Major streets shall conform to the width designated on the master street plan 1 wherever a subdivision falls in an area for which a master street plan has been adopted. For territory where such a street plan has not been completed at the time the preliminary plat is submitted to the planning and zoning commission, major streets shall be provided as required by the planning and zoning commission, based upon recommendations from the town engineer.
B. Dedication As Public Streets: Streets and alleys shall be dedicated to the town as public streets.
C. Arrangement Of Streets: The arrangement of streets in new subdivisions shall make provision for the continuation of the existing streets in adjoining areas (or their proper protection where adjoining land is not subdivided) insofar as such may be deemed necessary by the planning and zoning commission for public requirements. The street arrangement must be such as to cause no unnecessary hardship to owners of adjoining property when they plat their own land and seek to provide for convenient access to it.
D. Minor Streets: Minor streets shall approach arterial or collector streets at an angle of not less than eighty degrees (80°).
E. Minimum Widths: All streets and thoroughfares shall be platted according to the following minimum standards. Increased widths may be required where streets are to serve adjoining commercial or industrial property or where probable traffic conditions warrant: (Ord. 93-9, 6-14-1993)
Classification
| Right Of Way Width (Feet)
|
Classification
| Right Of Way Width (Feet)
|
Arterial street | 100 |
Major collector streets | 80 |
Minor collector streets | 60 |
Local streets, commercial and industrial areas | 60 |
Local streets, high and low density residential areas | 60 |
Cul-de-sacs | 60 |
Alleys | 20 |
(Ord. 93-9, 6-14-1993; amd. Ord. 2008-4, 6-9-2008)
F. Design Standards: In general the following design standards shall be applied to all street layouts:
1. Each subdivision shall provide two (2) separate accessways to an approved collector street.
2. Local, residential streets shall be planned to discourage through traffic within a residential subdivision. (Ord. 93-9, 6-14-1993)
3. Cul-de-sacs shall be no longer than five hundred feet (500') from the center of the turnaround to the centerline of the last intersecting street which is not a cul-de-sac. All cul-de-sacs shall have a minimum back of curb radius of fifty feet (50') with a right of way (ROW) radius of sixty feet (60') which connects to the street right of way (ROW) by a reverse curve of seventy five feet (75'). (Ord. 2008-4, 6-9-2008)
4. If a street jogs at an intersecting street and does not continue in a straight alignment, the centerline offset of the two (2) parts of the street approaching the intersecting street shall be not less than one hundred fifty feet (150').
5. Platting shall be accomplished in such a way that local streets and driveways access directly onto arterial streets as little as possible.
6. No more than two (2) streets shall intersect at one point.
7. Paved alleys shall be provided in commercial and industrial districts, unless definite alternate provisions are made for service access.
8. Where a residential subdivision abuts a major highway, a railroad right of way, or a limited access freeway, a frontage road may be required.
9. Dead end streets are prohibited, except where they may be necessary to provide future access to adjacent, undeveloped property. In that event, temporary turnarounds may be required on the dead end street until the adjacent property is developed, and the street is extended. All temporary turnarounds shall meet the minimum radius and dimensions of a permanent cul-de-sac.
10. Unless design conditions require larger radii, the minimum centerline radius shall be:
Arterial streets | 750 feet |
Primary collector streets | 750 feet |
Residential collector streets | 450 feet |
Local residential streets | 300 feet |
Other local streets | 300 feet |
11. A tangent of at least one hundred feet (100') shall be provided between any reverse curves.
12. All changes in street grades shall be connected by vertical curves. Vertical curves shall be designed according to well established engineering criteria.
13. The maximum grade for streets shall be as follows:
Freeways | As designed |
Arterial streets | 7 percent |
Collector streets | 8 percent |
Local streets | 8 percent |
(Ord. 93-9, 6-14-1993)
Notes
| 1 | 1. See title 7, chapter 6 of this code. |