§ 125.61 DESIGN CRITERIA FOR LOCAL ROADWAYS.

   The design of Local Streets shall comply with the requirements of the provisions and Tables below, depending on the type of Development proposed. Deviations from the numerical standards of Tables 3, 4, 5, and 6 may be allowed but only where approved by the City Manager upon a finding that substantially equivalent protection of the public safety can be achieved by alternative standards. If a proposed Development includes more than one type of Use , the highest criteria shall apply.

   125.61(A)   Residential Development . Residential Streets shall be adequate to permit neighborhood Traffic circulation to flow from the highest element of the hierarchical classification, the expressway, Arterial, or collector, to the lowest element, the local residential Street . Circulation within a residential Development shall be adequate when the criteria of the Tables below are met and when collectors and Local Streets are provided that meet the standards below:

   125.61(A)(1)   Design criteria. If the gross density of a residential Development is one unit per two and one-half acres or less, the Development shall conform to the minimum design standards of Table 3. If the gross density of a residential Development is between one unit per acre and one unit per two and one-half acres, the Development shall conform to the minimum design standards of Table 4. All other residential Development shall conform to the minimum design standards of Table 5.

TABLE 3: DESIGN CRITERIA FOR STREETS FOR RURAL RESIDENTIAL DEVELOPMENTS (Minimum Lot size: More than 2.5 acres gross)
Collector (Nontrafficway)			Local Streets
Collector	Four-lane Collector	Two-lane Local	Cul-De-Sac	Local
Typical Volume	6,500-18,000 vpd	2,000-5,000 vpd	300-2,000 vpd	0-300 vpd (a)
Residential Access	Limited	Limited	Yes	Yes
Design Speed	45 mph	40 mph	35 mph	30 mph
Typical Space Between Streets*	1/2 mile	1/4 mile	660 feet	330 feet*
Intersection Space Maximum	No Maximum (b)	2 miles (b)	N/A	N/A
Intersection Space Minimum	1,320 ft. (b)	660 ft. (b)	250 ft. (c)	250 ft. (c)
Lanes	4	2	2	2
Minimum Pavement	52 ft. (g)	28 ft. (g)	22 ft.	22 ft.
Pavement Mark/Signing	Yes (d)	Yes (d)	Yes (d)	Yes (d)
Driveway Design	Swale -Drive (e)	Swale -Drive (e)	Swale -Drive (e)	Swale -Drive (e)
Parking - On-Street	Prohibited	Prohibited	Prohibited	Prohibited
Curbing Along Intersection Radii	Optional	Optional	Optional	Optional
Median	Yes	No	No	No
Turn Lanes*	Yes (f)	Yes (f)	No	No
Traffic Signal	As Warranted	As Warranted	No	No
Pedestrian Crossing	Intersection Only (d)	Intersection Only (d)	Intersection Only (d)	Intersection Only (d)
Building Setback*	25 ft. min.	25 ft. min.	25 ft. min.	25 ft. min.
Approach Widening (Intersection Improvement)*	Yes	Yes	No	No
Right-Of-Way *	80 ft.	60–80 ft. (e)	50 ft.	50 ft.
Design Vehicle (Geom)	WB-60 & SU	WB-60 & SU	WB 40	WB 40
Corners (Right-Of-Way )	30 ft. chord	30 ft. chord	25 ft. radius	25 ft. radius
Bikeways *	Yes	Yes	No	No
Sidewalks	No	No	No	No
* Further explanation in provisions of §§ 125.50–125.65
(a)   Over 300 vpd may be allowed if an alternate emergency access is provided.
(b)   Or alternate approved by the City Manager based upon land planning and Traffic analysis.
(c)   See § 125.61(A)(3)(a).
(d)   As delineated in the Manual on Uniform Traffic Control Devices (MUTCD).
(e)   Or alternate approved by the City Manager.
(f)   On Collectors–For Collector/Collector Intersections or Local/Collector Intersections with more than 1,000 vpd.
(g)   The outermost lanes shall be two feet wider than the interior lanes if Right-Of-Way is available.
N/A Not applicable.

 

TABLE 4: DESIGN CRITERIA FOR STREETS FOR LOW DENSITY RESIDENTIAL DEVELOPMENTS (35,000 square feet net (a) to 2.5 acres gross)
	Collector (Nontrafficway)		Local Streets
	Four-lane Collector	Two-lane Collector	Local	Local Cul-De-Sac
Typical Volume	6,500-18,000 vpd	2,000-6,500 vpd	300(d)-2,000 vpd	0-300(d) vpd
Direct Access	Limited (c)	Limited (c)	Yes	Yes
Design Speed	45 mph	40 mph	35 mph	30 mph
Typical Space Between Streets*	1/2 mile	1/2 mile	330 ft.	330 ft.*
Intersection Space Maximum	No Maximum(d)	2 miles (d)	1/2 mile	N/A
Intersection Space Minimum	660 ft.	660 ft.	250 ft. (e)	250 ft. (e)
Lanes	4	2	2	2
Minimum Pavement	52 ft. (h)	28 ft. (h)	24 ft.	22 ft.
Pavement Mark/Signing	Yes (f)	Yes (f)	Yes (f)	Yes (f)
Driveway Design	Swale -Drive (d)	Swale -Drive (d)	Swale -Drive (d)	Swale -Drive (d)
Valley Gutter	No	No	Yes	Yes
Parking - On Street	Prohibited	Prohibited	Prohibited	Prohibited
Median	Yes	No	No	No
Turn Lanes*	Yes (g)	Yes (g)	No	No
Traffic Signal	As Warranted	As Warranted	No	No
Pedestrian Crossing	Intersection Only (f)	Intersection Only (f)	Intersection Only (f)	Intersection Only (f)
Building Setback*	25 ft. min.	25 ft. min.	25 ft. min.	25 ft. min.
Approach Widening (Intersection Improvement)*	Yes	Yes	No	No
Right-Of-Way *	80 ft.	60–80 ft. (e)	50 ft.	50 ft.
Design Vehicle (Geom)	WB-60 & SU	WB-60 & SU	WB 40	WB 40
Corners (Right-Of-Way )	30 ft. chord	30 ft. chord	25 ft. radius	25 ft. radius
Bikeways *	Yes	Yes	No	No
Sidewalks	Yes	Yes	Yes	Yes
Curbing along Intersection Radii	Yes	Yes	Yes	Yes
* Further explanation in provisions of §§ 125.50–125.65.
(a)   Net = Fee Simple Ownership.
(b)   Over 300 vpd may be allowed if an alternate emergency access is provided.
(c)   Residential access may be allowed for Lots with a minimum of 200 feet Frontage or for collectors if volume does not exceed a projection of 3,000 vpd.
(d)   Or alternate approved by the City Manager.
(e)   See § 125.61(A)(3)(a).
(f)   As delineated in the Manual on Uniform Traffic Control Devices (MUTCD).
(g)   On Collectors–For Collector/Collector Intersections or Local/Collector Intersections with more than 1,000 vpd.
(h)   The outermost lanes shall be two feet wider than the interior lanes if Right-Of-Way is not available.
N/A Not Applicable.

 

TABLE 5: DESIGN CRITERIA FOR STREETS FOR RESIDENTIAL DEVELOPMENTS
	Collector (Nontrafficway)		Local Streets
	Four-Lane Collector	Two-Lane Collector	Local	Local Cul-De-Sac
Typical Volume	8,500-20,400 vpd	4,000-8,500 vpd	500-4,000 vpd	0-500 vpd
Residential Access	Limited (a)	Limited (a)	Yes	Yes
Design Speed	45 mph	40 mph	35 mph	30 mph
Typical Space Between Streets*	1/2 mile	1/4 mile	260 ft. (c)	260 ft. (b)(c)*
Intersection Space Maximum	1 mile (c)	1/2 mile	1/2 mile	660 ft. (c)
Intersection Space Minimum	660 ft.	330 ft.	250 ft. (b)	250 ft. (b)
Lanes	4	2	2	2
Minimum Pavement	52 ft. (f)	28 ft. (f)	24 ft.	24 ft.
Pavement Mark/Signing	Yes (d)	Yes (d)	Yes (d)	Yes (d)
Driveway Design	Prohibited	Ramp-Type (c)	Swale -Drive (c)	Swale -Drive (c)
Valley Gutter	No	No	Yes	Yes
Parking - On Street	Prohibited	Prohibited	Prohibited	Prohibited
Median	Yes	No	No	No
Turn Lanes*	Yes (e)	Yes (e)	Yes (e)	No
Traffic Signal	As Warranted	As Warranted	As Warranted
Pedestrian Crossing	Intersection Only (d)	Intersection Only (d)	Intersection Only (d)	Intersection Only (d)
Building Setback*	10 ft. min.	10 ft. min.	10 ft. min.	10 ft. min.
Approach Widening (Intersection Improvement)*	Yes	Yes	As Warranted	No
Right-Of-Way *	80 ft.	80 ft. (c)	50–60 ft.	50–60 ft.
Design Vehicle (Geom)	WB-60 & SU	WB-60 & SU	WB 60 & SU	WB 60 & SU
Corners (Right-Of-Way )	30 ft. chord	30-25 ft. chord	25 ft. chord (c)	25 ft. chord (c)
Bikeways *	Yes	Yes	No	No
Curbing Along Intersection Radii	Yes	Yes	Yes	Yes
* Further explanation in provisions of §§ 125.50–125.65.
(a)   See § 125.61(A)(2)(b) for Multi-Family  Development Exception.
(b)   Or 125 ft. for opposing offset “T” intersections.
(c)   Or alternate approved by the City Manager .
(d)   As delineated in the Manual on Uniform Traffic Control Devices (MUTCD).
(e)   On Collectors–For Collector/Collector Intersections or Local/Collector Intersections with more than 1,000 vpd.
(f)   The outermost lanes shall be two feet wider than the interior lanes if Right-Of-Way is available.

 

   125.61(A)(2)   Residential collector Street . The residential collector Street serves as the principal circulation facility within the residential neighborhood. Its function is to collect Traffic from the interior and deliver it to the closest perimeter intra-neighborhood transportation between the residential neighborhood and the local centers of attraction such as neighborhood shopping centers, schools, and neighborhood parks.

   125.61(A)(2)(a)   Collectors shall penetrate residential Development without forming a continuous network, thus discouraging through Traffic . When discontinuity of local collectors is obtained by offsetting the intersections with the Arterials or other collector Streets, such offsetting shall comply with the following:

   125.61(A)(2)(a)1.   A collector may intersect an Arterial but only if aligned with and extending an existing collector which intersects the Arterial or at a minimum distance of 1,320 feet from the intersection of an existing collector and the Arterial, or at a minimum distance of 1,420 feet from the intersection of two Arterials.

   125.61(A)(2)(a)2.   A Local Street may not intersect an Arterial unless unavoidable in which case the Local Street may intersect an Arterial but only if aligned with and extending an existing Local Street which intersects the Arterial or at a minimum distance of 660 feet from any other intersection of the Arterial, except at a minimum distance of 760 feet from the intersection of two Arterials.

   125.61(A)(2)(a)3.   A collector may intersect another collector but only if aligned with and extending an existing collector or at a minimum distance of 660 feet from any other intersection of the collector.

   125.61(A)(2)(a)4.   A Local Street may intersect a collector if spaced at a minimum distance of 660 feet from any other intersection or, in the case of a “T”-type intersection, at a minimum distance of 330 feet from any other intersection.

   125.61(A)(2)(a)5.   The minimum spacing requirements of this subchapter may be reduced upon a finding by the City that, given the particular conditions of the proposed Development , such reduction will not compromise operational and safety standards.

   125.61(A)(2)(b)   Single-Family residential Lots smaller than one acre shall not have direct access to four-lane collector Streets. If the sides of adjoining residential Lots abut the collector Street , with the house and driveway facing the Local Street , the spacing between intersections shall be not less than 250 feet, and a Nonvehicular Access Line shall be provided along the collector Street . When the back of residential Lots abuts a collector Street a Nonvehicular Access Line shall be provided along the collector Street . Group parking facilities, as for multi-family Use , when located along a collector residential Street , shall be served by driveways having a minimum spacing of 250 feet.

   125.61(A)(3)   Local residential Street . The primary function of the Local Street is to provide the access of vehicles to Single-Family residential Development fronting on the Street . Local Streets shall provide access to Single-Family residential Development and connect local Traffic from private driveways to collector Streets. Local Streets are required when connections of driveways or private Streets to the collector would be otherwise closer than 250 feet.

   125.61(A)(3)(a)   There shall be a minimum distance of 250 feet between the intersection of any two Local Streets with a single collector, except that there may be a minimum distance of 125 feet between “T” intersections.

   125.61(A)(3)(b)   Local Streets shall be patterned in such a way that continuous Traffic from one collector to another collector is not possible.

   125.61(A)(3)(c)   Dead end Streets shall be designed and constructed with a paved turnaround at the closed end pursuant to the requirements of the Building Code . Adequate easements or Rights-Of-Way shall be provided for Construction of the paved surface, Roadway drainage, and Sidewalks adjacent to the turnaround.

   125.61(A)(3)(d)   A loop Street , a Local Street that begins and ends at the same collector, shall be subject to the following requirements:

   125.61(A)(3)(d)1.   A loop Street may be designed with a right angle corner serving as a Cul-De-Sac providing that a recessed circular pavement at such corner allowing greater Frontage for irregularly shaped Lots is provided.

   125.61(A)(3)(d)2.   A loop Street may begin at a collector and end at a Local Street provided that the system does not exceed the maximum number of trips permitted.

   125.61(B)   Commercial Development .

   125.61(B)(1)   Commercial Streets. Commercial Streets shall be designed to facilitate the efficient and safe movement of vehicles from the Trafficways to regional commercial facilities, and from collectors and local residential Streets to community and neighborhood commercial Development. The design of commercial Streets shall comply with the standards of Table 6.

   125.61(B)(2)   Pedestrian access. Neighborhood and community commercial facilities shall have an efficient and direct pedestrianway connection to the Residential Areas the facilities are intended to serve. The design of local commercial facilities shall allow pedestrian and bike riders direct access from adjacent neighborhood areas, with due consideration to the elimination of points of conflict between pedestrians and vehicles.

   125.61(C)   Industrial Development . Industrial Development shall be designed to provide easy and safe access for incoming goods and services, and for the personnel operating the industrial facilities. Adequate location and size shall ensure that noise levels, smells and odors, vibration, radiation, and other sources of nuisance will not affect residential Development. Industrial Streets shall be designed to provide direct access from Arterials and collectors to industrial Local Streets. Local residential Streets shall not be used to provide access to immediately adjacent industrial Development. Industrial Streets shall comply with the standards of Table 6.

TABLE 6: DESIGN CRITERIA FOR STREETS FOR COMMERCIAL AND INDUSTRIAL DEVELOPMENTS
Collector (Nontrafficway)			Local Streets
Collector	Four-lane Collector	Two-lane Local	Local	Cul-de-sac
Typical Volume	6,500-20,400 vpd	3,000-8,500 vpd	500-4,000 vpd	0-1,000 vpd (a)
Residential Access	Limited (b)	Limited (b)	Yes	Yes
Design Speed	45 mph	40 mph	35 mph	30 mph
Typical Space Between Streets*	1/2 mile	1/4 mile	660 feet	330 ft.
Intersection Space Maximum	1 mile	1/2 mile	1/2 mile	660 ft.
Intersection Space Minimum	660 ft.	660 ft.	330 ft.	330 ft.
Lanes	4	2	2	2
Minimum Pavement	52 ft. (f)	28 ft. (f)	24 ft.	24 ft.
Pavement Mark/Signing	Yes (d)	Yes (d)	Yes (d)	Yes (d)
Driveway Design	Ramp/Street (e)	Ramp/Street (e)	Ramp/Street (e)	Ramp/Street (e)
Parking - On Street	Prohibited	Prohibited	Prohibited	Prohibited
Median	Yes	No	No	No
Turn Lanes*	Yes	Yes	No	No
Traffic Signal	As Warranted	As Warranted	As Warranted	No
Pedestrian Crossing	Intersection Only (d)	Intersection Only (d)	Intersection Only (d)	Intersection Only (d)
Building Setback*	10 foot min.	5 foot min.	5 foot min.	5 foot min.
Approach Widening (Intersection Improvement)*	Yes	Yes	No	No
Right-Of-Way *	80 ft.	60-80 ft.	60 ft.	60 ft.
Design Vehicle (Geom)	WB-60 & SU	WB-60 & SU	WB 60 & SU	WB 60 & SU
Corners (Right-Of-Way )	30 ft. chord	30 ft. chord	25 ft. chord (e)	25 ft. chord
Bikeways *	Yes	Yes	No	No
Sidewalks	Yes	Yes	Yes	Yes
Curbing Along Intersection Radii	Yes	Yes	Yes	Yes
* Further explanation in provisions of §§ 125.50–125.65.
(a)   Cul-De-Sacs may be approved for Traffic volumes more than 1,000 vpd if an alternate is approved by the City Manager.
(b)   As permitted in § 125.54(B)(2).
(c)   Or 165 ft. for opposing offset “T” intersections.
(d)   As delineated in the Manual on Uniform Traffic Control Devices (MUTCD).
(e)   Or alternate approved by the City Manager.
(f)   The outermost lanes shall be two feet wider than the interior lanes if Right-Of-Way is available.

 

(Ord. 2010-21, passed 10-4-2010)