Design details for new neighborhood collector streets shall be as follows:
A. 
Function. To collect and distribute traffic from higher-type arterial streets to access streets, or directly to traffic destinations; to serve neighborhood traffic generators such as one store or small group of stores, elementary schools, churches, clubhouses, small hospitals or clinics, small apartment areas, etc.;
B. 
Planning Features. Should function as an arterial street only within one neighborhood, and should serve traffic only with an origin or destination within that neighborhood;
C. 
Access Conditions. Intersections at grade with direct access to adjacent property permitted;
D. 
Traffic Features. Traffic-control measures as warranted, but not to encourage traffic with trips through the neighborhood. Parking restricted as necessary.
Average Daily Traffic
500 – 5,000
Horizontal Curvature
Max.
D (°)
Min.
R (Ft)
D = Degrees
R = Radius in Feet
Flat Terrain
8.0
715
Rolling Terrain
14
410
Mountainous Terrain
21
275
(Superelevation Required)
Maximum Grades
Flat Terrain
7%
Rolling Terrain
10%
Mountainous Terrain
12%
These grades may be exceeded for short distances when approved by council.
Minimum Two-Lane Pavement Width
24 ft.
Number of lanes (min.)
2 with parking
Minimum Roadway Width
With curbs:
No Parking
28 ft. (not recommended)
Parking One Side
32 ft.
Parking Both sides
40 ft. (min. for bus route)
New Bridges
Roadway width (min.)
Not less than approach roadway width
Design load (AASHTO)
HS 20-44
Vertical clearance (min.)
16.5 ft.
Right-of-way width (min,)
60 ft.
(Ord. 483 § 4.3(A), 1980)
Design details for new access streets shall be as follows:
A. 
Function. To provide access to adjacent property;
B. 
Planning Features. Should be designed and located to prevent continuous or unobstructed flow of traffic through a neighborhood;
C. 
Access Conditions. Intersections at grade with direct access to adjacent property;
D. 
Traffic Features. Traffic-control measures as warranted to provide adequate sight distance and safety.
Average Daily Traffic
Variable; usually less than 600
Horizontal Curvature
Max.
D (°)
Min.
R (Ft)
D=Degrees
R=Radius in Feet
Flat terrain
14
410
Rolling terrain
28.5
200
Mountainous terrain
50
115
(Superelevation required)
Maximum Grades:
Flat terrain:
8%
Rolling terrain:
12%
Mountainous terrain:
15%
These grades may be exceeded for short distances when approved by council.
Minimum 2-Lane Pavement Width:
Varies from 22 ft. to 20 ft.
Minimum Roadway Width:
With curbs:
No parking
26 ft.
Parking one side
30 ft.
Parking both sides
36 ft. (40 ft. for bus route)
New Bridges:
Roadway width (Min.)
Greater than or equal to the approach roadway but not less than 28 ft.
Design load (AASHTO)
HS 20-44
Vertical clearance (Min.)
16.5 ft.
Right-of-Way Width (Min.):
60 ft.
(Ord. 483 § 4.3(B), 1980)