The design and improvement standards contained in Table 2 in this section are suggested as minimum design standards. All streets shall be designed and constructed in accordance with the standards specified in Table 2 in this section, Appendix A in this chapter, and the adopted county stormwater management and sediment control regulations (Appendix C), as well as stormwater design specifications.
Table 2: Street Design Standards | ||||
Local Streets | FHWA Classification | |||
Cul-de-sac | Residential | Sub-collector | Collector | |
Table 2: Street Design Standards | ||||
Local Streets | FHWA Classification | |||
Cul-de-sac | Residential | Sub-collector | Collector | |
Number of lanes | 2 | 2 | 2 | 3 |
Street width f/f* curb | ||||
Parking one side f/f curb | 28 ft. | 28 ft. | 36 ft. | NA |
Parking both side f/f curb | 36 ft. | 36 ft. | NA | NA |
No parking f/f curb | 28 ft. | 28 ft. | 28 ft. | 36 ft. |
Border area | 11 ft. curb/RW | 11 ft. curb/RW | 12 ft. | 12 ft. |
Minimum right-of-way | 50 ft. | 50 ft. | 60 ft. | 80 ft. |
Sidewalks | 4 ft. | 4 ft. | 4 ft. | 4 ft. |
Design speed | 25—30 mph | 25—30 mph | 35 mph | 45 mph |
Minimum stopping sight distance | 200 ft. | 200 ft. | 225 ft. | 325 ft. |
Minimum centerline radius | 50 ft. | 50 ft. | 100 ft. | 575 ft. (10 degrees) |
Maximum grade | 7% | 7% | 7% | 6% |
Minimum curb radii | 25 ft. | 25 ft. | 30 ft. | 40 ft. |
Minimum distance from end of curb radius to first curb cut | 20 ft. | 20 ft. | 30 ft. | 40 ft.** |
Minimum tan. curb between drives | 4 ft. | 4 ft. | 4 ft. | 4 ft. |
Maximum amount of property frontage in drives *** | 30% | 30% | 30% | 40% |
Maximum width of drive at property line | 24 ft. | 24 ft. | 24 ft. | 24 ft. |
Intersection data: | ||||
1. Clear sight distance along each leg | 90 ft. | 90 ft. | 90 ft. | 90 ft. |
2. Minimum curb radius | ||||
Local to | 25 ft. | 25 ft. | 30 ft. | 40 ft. |
Collector to | 30 ft. | 30 ft. | 40 ft. | 40 ft. |
Arterial to | 35 ft. | 35 ft. | 45 ft. | 50 ft. |
3. Minimum centerline offset of adjacent intersection | ||||
Local to | 150 ft. | 150 ft. | 200 ft. | 200 ft. |
Collector to | - | - | - | 300 ft. |
Arterial to | - | - | - | - |
Cul-de-sac data: | ||||
4. Lots | ||||
Maximum number of lots fronting on cul-de-sac (circular portion) | 6 ft. | - | - | - |
Minimum lot frontage at right-of-way line | 45 ft. | - | - | - |
5. Street | ||||
Minimum radius of street right-of-way | 60 ft. | - | - | - |
Minimum radius of pavement to face of curb | 45 ft. | - | - | - |
Maximum cul-de-sac length (measured to radii of bulb) | 600 ft. | - | - | - |
6. Driveways | ||||
Maximum percentage of lot frontage occupied by driveway | 50% | - | - | - |
* f/f - face to face of curb or edge of pavement on streets with no curb | ||||
** Industrial and commercial subdivision - 200 ft. | ||||
*** Criteria does not apply to cul-de-sac | ||||
NA Not Allowed | ||||
(Ord. 20-04, passed 12-27-2004)