15.03.200 Street Standards.
The type and arrangement of roadways peripheral to and abutting any development shall be in compliance with the major and local street plans for the area of the development. Developments which are located on or next to a collector or arterial street shall be designed and developed so the public street continues through the project in a logical, safe design. Developments which are located at the end of stubbed local public streets may be required to extend the street through the development based on the proposed circulation needs of the area. The Planning Commission, upon recommendation of the Planning and Engineering staff, shall determine if the street should be extended as a through street or as a cul-de-sac during the preliminary approval.
(1) Arterial and collector streets shall conform to the major street plan wherever a development falls in an area for which an arterial and collector street plan has been adopted. For areas where such street plan has not been completed when the preliminary plan of the subdivision is submitted to the Planning Commission, street dedications shall be provided as follows:
(a) Local street right-of-way shall have a width of fifty-four (54) feet, sixty (60) feet or sixty-six (66) feet, except where private property owner’s association includes planting areas and sidewalks as part of their common area.
(b) Collector street right-of-way shall have a width of eighty (80) feet.
(c) Arterial street right-of-way shall have a minimum width of eighty (80) feet or one hundred twenty-eight (128) feet as determined by future projected traffic volumes.
(d) Minimum width of asphalt wherever curb and gutters are installed (lip to lip of curb) shall be as follows:
(i) For local streets (public and private): twenty-four (24), thirty (30), or thirty-six (36) feet are to be applied as detailed in the Provo City Transportation Master Plan.
(ii) For collector streets: fifty (50) feet.
(iii) For arterial streets: fifty (50) feet or seventy-eight (78) feet as determined by the City Engineer for future projected traffic volumes.
(2) To promote connectivity of the street system for efficient circulation, cul-de-sacs shall be used only where physical conditions or land ownership configurations exist which make other designs undesirable and where local area street plans do not require through circulation. When used, cul-de-sac streets shall be extended in a manner that reduces the length of public access ways to be constructed between the end of the cul-de-sac and the destination of such access way. Each cul-de-sac shall have a minimum right-of-way of fifty (50) feet and a radius of fifty (50) feet of right-of-way for the cul-de-sac bulb, except where a private property owner’s association includes planting areas and sidewalks as part of its common area. A cul-de-sac street shall meet the pavement width standard as per Subsection (1)(d)(i) of this Section and a cul-de-sac bulb shall have asphalt pavement of not less than forty-one (41) feet in radius. The maximum length of a cul-de-sac street shall not exceed five hundred (500) feet, unless:
(a) Physical conditions necessitate providing a longer cul-de-sac, due to the inability to provide any other means of access. Such conditions may include, but are not limited to, topography, natural resource areas such as wetlands, ponds, streams, rivers, or lakes; or
(b) Buildings or existing developments block access to the site, which would result in landlocked property, or an extremely inefficient development pattern. A cul-de-sac street which exceeds five hundred (500) feet shall include an intermediate turnaround near the midpoint of the street as approved by the City Engineer. In no case shall a cul-de-sac street length exceed one thousand (1,000) feet.
(3) Where access is desired to the side or rear of abutting properties, an alley may be provided. Alleys shall have a minimum width of twenty-four (24) feet of asphalt or concrete pavement measured from lip of curb to lip of curb. The design grade and alignment design of an alley shall conform to local street standards, except that the centerline radius may be reduced where appropriate, as determined by the City Engineer. Curb and gutter or other acceptable drainage design features shall be required to control pavement drainage. Minimum pavement thickness shall conform to the same standards required for local streets. Parking shall not be allowed on alleys. Alleys shall not be made a part of a lot.
(4) On collector and local streets, four (4) way intersections may be designed with a roundabout according to Provo City standard drawings and the major and local street plan as approved by the City Engineer. Streets shall intersect each other as near as possible at right angles. Minor streets shall approach arterial or collector streets at an angle of ninety (90) degrees plus/minus ten (10) degrees. Offsets between intersections from ten (10) feet to one hundred twenty (120) feet, measured from street center line to street center line, shall be prohibited.
(5) Minimum street grades shall be four-tenths of one percent (0.4%). The maximum street grade shall be twelve percent (12%) for local streets and eight percent (8%) for arterial and collector streets.
(6) Where the street lines within a block deflect from each other, there should be a connecting curve. The radius of the curve for the center shall be not less than five hundred ten (510) feet for arterial streets, three hundred thirty-five (335) feet for collector streets, and two hundred (200) feet for the local streets. Local streets shall be designed with horizontal and vertical curves. (Refer to AASHTO - A Policy on Geometric Design of Highways and Streets.)
(7) Curbs at all intersections of collector and arterial streets shall be rounded with curves having a minimum lip of curb radius of thirty (30) feet. Local street intersections shall be rounded with a curve having a minimum lip of curb radius of fifteen (15) feet. (Refer to Provo City Standard Details. Any exceptions shall be approved by the City Engineer.)
(8) Specifications for the design of street sub-base, base, hard surfacing, curb and gutters, sidewalks and the treatment of drainage courses shall comply with standard specifications as adopted by the City and administered by the City Engineer. All improvements within a public right-of-way shall conform to the standard drawings and specifications approved by the Engineering Division.
(9) New street names shall not duplicate those already existing. A street that is obviously a continuation of another already in existence shall bear the same name. The numerical system of street designations shall be maintained and extended where possible. Streets that curve, loop, horseshoe or meander should be given an alphabetical name. (See Chapter 15.13, Provo City Code, for street naming.)
(10) Street signs shall be installed where required by the City Engineer. A street sign fee as shown on the Consolidated Fee Schedule adopted by the Municipal Council shall be paid to the Engineering Division prior to final plat approval. The City shall assume the responsibility for installation and maintenance of street signs once the fee has been paid.
(11) All public streets shall be dedicated for public use. The full right-of-way of all streets (as described in Subsection (1) of this Section) within a development shall be dedicated and the roadway paved. Developments on one (1) side only of the proposed local street shall include dedication of not less than thirty-five (35) feet of the street right-of-way, twenty-four (24) feet of which shall be paved, as approved by the City Engineer. Full-width pavement for local streets shall be required when ADT exceeds two hundred fifty (250) vehicles. Arterial and collector street dedication and pavement width shall be determined on a case-by-case basis depending on projected traffic volumes for the proposed development.
(12) The arrangement of streets in new developments shall make provision for the continuation of the existing streets in adjoining areas (or their proper projection where adjoining land is not subdivided) at the same or greater width (but in no case less than the required minimum width).
(a) Public right-of-way connections shall be made in a manner that will provide safe and convenient access to an existing or planned arterial/collector street, school, park, employment center, commercial area, or similar neighborhood activity center. The connections may be completed over time in phases as part of a required overall street plan.
(b) A public street connection shall be provided to any existing or approved public street right-of-way stub abutting the development, unless it is demonstrated that a connection cannot be made because of the existence of one (1) or more of the following conditions:
(i) Physical conditions that preclude development of a public street. Such conditions may include, but are not limited to, topography, natural resource areas or primary and secondary conservation areas such as wetlands, ponds, streams, channels, rivers or lakes.
(ii) Buildings or other existing development on adjacent lands, including previously subdivided but vacant lots or parcels, that physically preclude a connection now or in the future.
(c) Public right-of-way shall be extended to adjacent undeveloped or partially developed contiguous land (i.e., land that can be further divided by provisions of this Title) in locations which will not prevent the adjoining property from developing consistent with applicable standards, unless it is demonstrated that a connection cannot be made because of one (1) or more of the following conditions:
(i) Physical conditions that preclude development of a public street. Such conditions may include, but are not limited to, topography, natural resource areas or primary and secondary conservation areas such as wetlands, ponds, streams, channels, rivers or lakes.
(ii) Buildings or other existing development on adjacent lands, including previously subdivided but vacant lots or parcels, that physically preclude a connection now or in the future.
(d) Street alignments shall be selected that relate to the natural topography and other natural conditions.
(13) Sidewalks shall be six (6) feet in width except where other widths are deemed appropriate by the City Engineer and comply with the latest Americans with Disabilities Act requirements. Planter strips of a minimum seven (7) feet in width shall be used in all street cross-sections except where not required by the City Engineer.
(14) A development with a single street access (ingress and egress) shall have a maximum ADT not higher than two hundred fifty (250) vehicle trips. ADT shall be determined by trip generation rates obtained from the City Traffic Engineer. A second street access shall be required for projects which exceed the designated trip rate.
(15) Direct driveway access from residential property to collector and arterial streets shall not be permitted unless approved by the City Engineer. Access to new residential development shall be provided by local streets. A limited number of driveways to residential property abutting a collector or arterial may be permitted when allowed by the Transportation Master Plan.
(16) For typical street cross-sections and other street details, refer to the Provo City Standard Details.