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Jogs of less than 150 feet in local alignments are not acceptable. Arterial and collector streets will not have jogs in alignment. (See Figure 24.)
A. The centerlines of intersecting streets will have an angle of intersection of 90 degrees or as close to 90 degrees as is practicable. Local streets will intersect at an angle no less than 60 degrees.
Arterial and collector streets will have an angle of intersection no less than 75 degrees. (See Figure 25.) Curvilinear streets should radially intersect.
B. Right-of-way lines at the corners of street intersections will be rounded with a curve radius of 25 feet or greater for residential districts and 40 feet for commercial or industrial districts.
A. Private streets are permitted only where satisfactory means of providing for their control and maintenance is demonstrated.
1. The City of Tucson will not be responsible for maintenance, liability, or enforcement of traffic control on private streets, except where specifically authorized by ordinance.
2. Erection of all traffic control and street name signs is the responsibility of the developer. Maintenance of all traffic control and street name signs is the responsibility of the property owners’ association.
B. Private streets will be named according to current Pima County criteria and will be approved by Pima County Addressing.
C. An applicant petitioning the City of Tucson to accept the dedication of a private street to the public must satisfy
that the street meets city standards for public streets, such as structure, right-of-way, and all other public street provisions.
D. Private streets must meet all the requirements of public streets which carry similar types and volumes of traffic, except where specific exceptions are noted in this standard.
E. PAALs are not acceptable for dedication as public rights-of-way.
A. Where, in the opinion of the
, there exist extraordinary conditions of topography, land ownership, adjacent development, Historic District review, or other circumstances not provided for in this standard, the
may modify this standard in such a manner appropriate to the public interest.
B. In granting a modification of this standard or requirements of these provisions, the
may make such additional requirements as appear necessary, in its judgment, to secure substantially the objectives of the Standards or requirements so modified.
C. All items not specifically covered by this standard will be judged on a case-by-case basis by the
without setting precedent.
Figure 1 Typical Cross Section for Interior Roads - No Parking Lanes (ADT 0-1,000)
Figure 2 Typical Cross Section - Two Parking Lanes (ADT 0-1,000)
Figure 3 Typical Cross Section - Handicapped Accessible Drive
Figure 4 Typical Detail - Handicapped Accessible
Detail for Vertical Curb
Figure 5 Typical Cross Section - Two Parking Lanes (ADT l,001-2,500)
Figure 6 Curb and Property Radii
Figure 7 Alley/Street Intersection
Figure 8 Crowned Streets/Inverted Streets
Figure 9 150' Right-of-Way - Utility Location
Figure 10 120' Right-of-Way - Utility Location
Figure 11 100' Right-of-Way - Utility Location
Figure 12 90' Right-of-Way - Utility Location
Figure 13 76' Right-of-Way - Utility Location
Figure 14 64' Right-of-Way - Utility Location
Figure 15 Utility Strip Easement
Figure 16 Sight Visibility Triangles
Figure 17 Sight Visibility Triangles - 4-Way Intersection
Figure 18 Sight Visibility Along Curve
Figure 19 Partial Local Street
Figure 20 Cul-de-Sac
Figure 21 Cul-de-Sac
Figure 22 Standard Right-of-Way and Curb Knuckle Design for 50' Right-of-Way
Figure 23 Turnarounds
Figure 24 Street Jogs
Figure 25 Street Intersections
MINIMUM
RADIUS
ARTERIAL STREET | COLLECTOR STREET | LOCAL STREET | P.A.A.L./ DRIVEWAY | |
ARTERIAL STREET | 30' | 25' | 25' | 25' |
COLLECTOR STREET | 25' | 25' | 25' | 25' |
LOCAL STREET | 25' | 25' | 18' | 18' |
P.A.A.L./DRIVEWAY | 25' | 25' | 18' | 18' |
LONGITUDINAL | |
>0.50% | 2% MIN. |
<0.50% | 3% MIN. |
ANY | 4% MAX. |
LONGITUDINAL | |
>0.50% | 2% MIN. |
<0.50% | 3% MIN.* |
ANY | 5% MAX.* |
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