Chapter 18.155
FUNCTIONAL STANDARDS FOR PUBLIC IMPROVEMENTS
Sections:
18.155.010 Purpose.
The general standards set forth in MCMC 18.155.020 through 18.155.070 apply to all development which may involve or affect public facilities.
(1) Water and sewer for all districts shall be provided by public or approved private systems. Any private system shall be authorized by the planning commission.
(2) Construction, reconstruction and repair of streets, sidewalks, sewers, water mains and other public improvements shall be in accordance with specifications adopted by the city and shall be coordinated with the city engineer. [Ord. 508 § 5.03.0, 1982].
18.155.020 Street standards.
The location, width and grade of streets shall be considered in their relation to existing and planned streets, to topographical conditions, and to the proposed use of land to be served by the streets. The street system shall be laid out in accordance with the future street plan and functional classification maps and designed to standards to assure adequate traffic circulation that is convenient and safe. Intersection angles, tangents and curves shall be appropriate for the traffic to be carried, considering the terrain. Street determinations shall be made in accordance with the street standards provided and the future street plan and functional classification maps. The criteria contained in the following subsections shall be consistent with adopted street standards as outlined in MCMC Title 17 and will consider both solar access to building sites and the need for utility location. Additional setbacks may be required as set forth in MCMC 18.145.020.
(1) Minimum Right-of-Way Width. All existing continuous minor streets shall be deemed to have insufficient right-of-way if the right-of-way is presently less than 60 feet in width and the street exceeds or is expected to exceed 2,400 feet in length. All other streets in the city shall be deemed to have insufficient or incomplete right-of-way if they are presently less than the standards for the type of street set forth in MCMC Title 17.
(2) Protection From Arterial. Where a development abuts or contains an existing or proposed arterial street, the development design shall provide adequate protection for residential properties and shall separate through and local traffic or, if separation is not feasible, shall minimize the traffic conflicts. The design requirements may include a street, parallel access street along the margin of the arterial, screen planting at the rear or side property line to be contained in a nonaccess reservation along the arterial, or other treatment suitable to meet the objectives of this section.
(3) Partial Width Streets. A partial width street, while generally not acceptable, may be approved by the planning commission where reasonably essential to the development and when in conformity with other requirements of this chapter and when it will be practical to require the dedication of the other portion when the adjoining property is developed. Reserve strips and street plugs may be required to preserve the objective of a partial width street.
(4) Future Extensions of Streets. Where necessary to give access to or permit a satisfactory future division of adjoining land, a public street may be extended to the boundary of the development and the resulting dead-end street may be approved without a turnaround. A reserve strip or street plug may be required to preserve the objective of the street extension. The street shall be located to align with any future streets identified in the future street plan and functional classification maps.
(5) Street Improvements.
(a) Streets, including alleys, within a development and streets adjacent to but only partially within a development will be improved. Catch basins will be installed and connected to drainage tile leading to storm sewers or drainage ways. Upon completion of the street improvement, monuments will be reestablished and protected in monument boxes at every public street intersection and all points of curvature and points of tangency of their centerlines.
(b) Street name signs will be installed at street intersections containing the name or number approved by the city council.
(c) Street lights may be required; street lights requiring new poles shall be installed on city approved metal poles and lights and shall be served from an underground source of supply unless exception is made because other electrical lines are not underground.
(6) Bicycle Routes. As identified in the bicycle plan map, the installation of bicycle lanes within streets, separate bicycle paths, or bike route signage shall be required when developing new or reconstructing existing streets. These new bicycle facilities will provide connections to improve the overall bicycle network for the community. Bicycle lanes shall be between four and six feet wide and located on both sides of the street, where practical. Refer to MCMC Table 17.50.030 for affected street types. [Ord. 508 § 5.03.1, 1982].
18.155.030 Sidewalks.
The same sidewalk improvements shall be installed to serve each building site as is required for a subdivision unless alternative pedestrian routes are available and such facilities are not called for in the pedestrian plan map. Required sidewalk widths will vary between five and eight feet, depending on the roadway’s functional classification. Refer to MCMC Table 17.50.030 for affected street types. [Ord. 508 § 5.03.2, 1982].
18.155.040 Sanitary sewers.
Sanitary sewers will be installed to serve each building site to connect the development to existing mains. The city engineer will take into account the capacity and grade to allow for future extension beyond the development. If required sewer facilities will, without further sewer connection, directly serve property outside the development, arrangements may be made to equitably distribute the cost. [Ord. 508 § 5.03.3, 1982].
18.155.050 Drainage.
An adequate system of storm drains will be installed to provide proper drainage for each new development and to connect the development to the existing downstream drainage system. If an upstream area discharges through the property proposed for development, the drainage system will provide capacity to receive the flood water discharge from the upstream area. If the proposed development, or the ultimate development the proposed development will serve, will cause an increase in flood water flow and the downstream drainage system is not sufficient to receive the increase, provisions will be made to increase the downstream capacity. [Ord. 508 § 5.03.4, 1982].
18.155.060 Water system.
Water lines shall be installed to serve each building site to connect the development to existing mains. The city engineer will take into account the need for extension beyond the development and to adequately grid the water system. If a required water main will, without further construction, directly serve property outside the development, arrangements may be made to equitably distribute the cost. Water supply mains shall be designed to serve public fire hydrants and, if a building site is more than 500 feet from a fire hydrant, hydrants shall be provided as designated by the city engineer. [Ord. 508 § 5.03.5, 1982].
18.155.070 Other utilities.
The developer will make necessary arrangements with utility companies or other persons or corporations affected for the installation of underground lines and facilities. Electrical lines and other wires, including, but not limited to, communication, street lighting and cable television, will be placed underground unless the size of the development and the points of connection to existing overhead utility facilities make underground installation impractical. [Ord. 508 § 5.03.6, 1982].