Chapter 24.20
IMPROVEMENT STANDARDS

Sections:

24.20.010    Roadways.

24.20.020    Curbs.

24.20.030    Utilities – Storm sewers.

24.20.040    Utilities – Sanitary sewers.

24.20.050    Utilities – Potable water system.

24.20.060    Street name signs.

24.20.070    Capacity for future developments.

24.20.080    Standard specifications.

24.20.090    Low-density street standards.

24.20.010 Roadways.

All streets, not including alleys, shall be improved by grading the full right-of-way width and constructing roadways consisting of an asphaltic concrete pavement over suitable base and leveling courses in accordance with the following schedules of widths measured from the inside edge of opposite curbs.

CLASS OF STREET

WIDTH OF STREET

Principal Arterial

70 feet

Minor Arterial

48 feet

Arterial Collector

36 feet

Neighborhood Collector

36 feet

Local Street

34 feet

Local Street – Single Frontage

27 feet

Rural Street

32 feet

Except that streets lying along the boundary of a subdivision, whether dedicated by the plat or already dedicated, but not improved, need be improved by the subdivider only to the center of the street. [Ord. 73 § 15.01; Ord. 204; Ord. 29-94; Ord. 11-07].

24.20.020 Curbs.

All streets shall be improved at each edge of the paved roadway with portland cement concrete curbs. Such curbs shall be similar in design and construction to concrete curbs adopted as standard for the city unless special conditions warrant the waiver of this requirement by the commission. [Ord. 73 § 5.02].

24.20.030 Utilities – Storm sewers.

Surface drainage from streets and other areas shall be disposed of through an adequate system of gutters and storm sewers. [Ord. 73 § 5.03].

24.20.040 Utilities – Sanitary sewers.

If a public sanitary sewer is available for connection within 500 feet of the subdivision, the subdivision shall be provided with a complete sanitary sewer system serving each lot designed for human habitation. Design of sewage disposal system shall be in accordance with Chapter 17.70 RMC. [Ord. 73 § 5.04; Ord. 27-13 § 1.01].

24.20.050 Utilities – Potable water system.

If a public water main is available for connection within 500 feet of the subdivision, the subdivision shall be provided with a potable water distribution system serving each lot designed for human habitation, and unless equal protection can be otherwise supplied, shall be provided with fire hydrants at each street intersection and at approximately 600-foot intervals on each street between intersections. Water distribution systems shall be designed in accordance with Chapter 18.34 RMC. [Ord. 73 § 5.05; Ord. 27-13 § 1.01].

24.20.060 Street name signs.

Street signs corresponding in design to those adopted as standard for the city shall be installed at each intersection for convenient identification of streets. [Ord. 73 § 5.06].

24.20.070 Capacity for future developments.

The capacities and dimensions of water, sewerage, drainage, and street facilities shall be adequate to provide for the future needs of other undeveloped properties in the general vicinity and the city may share in the cost of these improvements to the extent of the difference in cost between the capacities needed to serve the subdivision and the capacities required to serve the vicinity. [Ord. 73 § 5.07].

24.20.080 Standard specifications.

Physical developments and improvements required by this title shall be designed and installed in accordance with applicable construction standards of the city. Construction shall be performed under the supervision of the city engineer. [Ord. 73 § 5.08].

24.20.090 Low-density street standards.

Notwithstanding any contrary provision contained elsewhere in this code, the street development standards shall not apply to the floodplain use district (FP), agricultural use district (AG) and suburban agricultural use district (SAG). Development standards for these districts shall be as described on the standard drawings marked Exhibit A and Exhibit B attached to Ordinance 61-78 and by this reference incorporated herein. [Ord. 33-78 § 1.01; Ord. 61-78 § 1.01; Ord. 22-81 § 1.26].