(A) All streets shall be constructed and surfaced per the standards of this section and the adopted APWA Plans and Specifications. (If requirements of this section conflict with the town’s adopted APWA Plans and Specification, the town’s engineer will determine which standard to use.)
(B) Minimum improvements for any proposed rural street or private access road shall conform to the detail in Figure 4 above on six inches of aggregate compacted road base and compacted subgrade.
(1) Chip seal bituminous asphalt application shall be minimum 0.030 gallons of liquid grade asphalt (MC-3000) per square yard for base layer seal coat and 0.15 gallons per square yard for fog coat layer after removing excess chips. Liquid grade asphalt (MC-3000) shall meet the requirements of § 32.01.13.64 of the “APWA Manual of Standard Specifications.”
(2) Cover material shall be uncoated aggregate (rock chips) graded to meet the requirements of § 32.01.13.64 of the “APWA Manual of Standard Specifications.”, applied at a rate of at least 25 pounds per square yard, spread in conjunction with the base layer seal coat.
(3) The chip seal shall be placed only when the roadway surface is dry and there is no imminent threat of rain. The ambient temperature must be at least 60°F. and rising.
(C) Minimum improvements for any proposed rural residential, rural collector or any street within a development where multiple lots are being designated but not formally subdivided shall conform to the detail in Figure 3 above, on six inches of aggregate compacted road base and compacted subgrade as shown from 32.11.23 of the “APWA Manual of Standard Specifications.”
(D) Rural street standards may be used only in areas developed with minimum lot sizes of 80,000 square feet and six or less lots per block.
(E) Roadside drainage swales shown in the cross-section above shall have a minimum depth as determined by an approved drainage study and plan and a maximum depth of five feet.
(1) The design of the drainage swales shall be based on containing storm water flows from a minimum ten-year return storm event.
(2) Due to the highly erodible nature of the soils in the region, swale side slopes and bottoms shall be stabilized soil or planted and established with suitable soil-retaining vegetation, as approved by the Town Engineer.
(3) Stabilization means include, but are not limited to, cement-treated base, geogrid reinforcement, rip rap, acrylic polymer treatment (Soil Cement, Soil Tac, or similar), hydroseeding (must maintain to establish a good stand), or other approved stabilization method. (Refer to § 33.25.00 and related sections of the “APWA Manual of Standard Specifications”).
(F) All other street improvements shall conform to the details in Figures 1 and 2 above, which shall have a minimum structural section of two inches of bituminous concrete asphalt on six inches of aggregate compacted road base, or as specified in a geotechnical investigation and report. Alternate base materials may be proposed for approval by the Town Engineer.
(1) The proposed hot-mix asphalt pavement mix design shall be provided to the Town for approval and shall meet the minimum requirements of §§ 32.12.03 and 32.12.05 APWA Manual of Standard Specifications,” for Performance Graded asphalt.
(2) Prior to placement of any asphalt concrete the town shall be provided with a certified copy of the asphalt binder supplier’s test report which shall indicate the name of the refinery and supplier, type and grade of asphalt binder delivered, date and point of delivery, quantity delivered, delivery ticket number, purchase order number, and results of the tests specified per § 32.11.16.13 of the “APWA Manual of Standard Specifications.”
(3) At the time of delivery to the job site, the town shall be provided with a legible delivery ticket which shall indicate the name of the asphalt concrete supplier, the date, job name, name of contractor, supplier mix designation, delivery ticket number, and weight of material delivered, per § 32.11.16.13 of the “APWA Manual of Standard Specifications.”
(G) Major and collector streets shall have a 24-inch wide or a 30-inch wide Portland Cement concrete curb and gutter section with a six-inch high vertical curb.
(H) Local residential streets shall have a 24-inch wide or a 30-inch wide rolled Portland Cement curb and gutter section, as detailed in “Section 205 of the APWA Manual of Standard Plans.”
(I) Portland Cement concrete mix design shall be per Section 32.16.13 of the “APWA Manual of Standard Specifications.”
(1) Prior to placement of any Portland Cement concrete the Town shall be provided with a certified copy of the cement supplier’s certification and the pozzolan supplier’s certification (if pozzolans are employed in the concrete mix design) per § 03.30.04 of the “APWA Manual of Standard Specifications.”
(2) At the time of delivery to the job site, the town shall be provided with a legible delivery ticket which shall indicate the name of the Portland Cement concrete supplier, the date, job name, supplier mix designation, delivery ticket number, and volume of material delivered.
(J) In certain types of developments (e.g. mobile home park), the Town Engineer may require a 24-inch wide rolled curb and gutter section along the edges of the roadway for a rural residential street, rural collector street, rural lane, or rural private road when and where deemed necessary.
(K) The developer shall improve all streets and other public ways to the near edge of any intersecting Town street or state highway pavement or roadway surfacing.
(L) Driveway access and surfacing outside of street right-of-way must meet the requirements of the latest edition of the International Fire Code. This includes driveway access for remote campgrounds that do not have permanent buildings except restroom facilities.
(Ord. 2017-02, passed 11-13-2017; Am. Ord. 2021-22, passed 12-13-2021)