Chapter 17.28

17.28.010    Streets and highways—Design.

17.28.020    General design requirements.

17.28.030    Street widths.

17.28.040    Service roads and off-street parking.

17.28.050    Nonaccess and planting strips.

17.28.060    Width of alleys in lots proposed for commercial or industrial use.

17.28.070    Street names.*

17.28.080    Acre or larger lot subdivisions.

17.28.090    Easements.

17.28.100    Lot requirements.

17.28.110    Walkways.

17.28.120    Storm and surface water drainage—Fencing of ditches and streams.

17.28.130    Subdivision must be considered in relation to master plan of city.

17.28.140    Deed restrictions.

17.28.150    Land subject to inundation.

17.28.160    Reservation of regional facilities.

17.28.170    Prorating cost of areawide drainage facilities.

17.28.180    Cost of on site storm drainage.

17.28.010 Streets and highways—Design.

The street and highway design shall conform both in width and alignment to any master plan of streets and highways approved by the council and right-of-way for any such street or highway indicated on the master plan shall be dedicated.

The street and highway design shall conform to any proceedings affecting the subdivision which may have been initiated by the council or approved by the council upon initiation by other legally constituted bodies of the city, county or state. If a parcel of land to be subdivided includes a portion of the right-of-way to be acquired for a public freeway or parkway, and the council shall determine the boundaries of the right-of-way to be acquired, the subdivider shall either dedicate or withhold from a subdivision all the area included in such right-of-way. (Prior code § 23.41).

17.28.020 General design requirements.

(a)    All streets shall, as far as practicable, be in alignment with existing adjacent streets by continuations of the centerlines thereof or by adjustments by curves, and shall be in general conformity with the plans of the planning commission for the most advantageous development of the area in which the subdivision lies.

(b)    Streets shall be required to intersect one another at an angle as near to a right angle as is practicable in each specific case.

(c)    Where necessary to give access to or permit a satisfactory future subdivision of adjoining land, streets shall extend to the boundary of the property and the resulting dead-end streets may be approved without a turnaround; provided, that control of access across the dead-end street shall be vested in the city.

In all other cases a turnaround having a minimum radius to the property line of fifty feet shall be required.

(d)    Whenever a major street or state highway intersects any other street or highway, the property lines at each block corner shall be rounded with a curve having a radius of not less than thirty feet. On all other street intersections, the property line at each block corner shall be rounded with a curve having a radius of not less than fifteen feet. In either case, a greater curve radius may be required if streets intersect at other than right angles.

(e)    The centerline curve radius on all streets and highways shall conform to accepted engineering standards of design and shall be subject to approval by the city engineer, but shall not be less than five hundred feet for major streets, three hundred feet for secondary streets, and two hundred feet for minor streets.

(f)    No street or highway shall have a grade of more than twelve percent unless, because of topographical conditions or other exceptional conditions, the city engineer determines that a grade in excess of twelve percent is necessary.

(g)    Reserve strips controlling the access to public ways or minimizing values for special improvement assessments will not be approved unless the strips are necessary for the protection of the public welfare or of substantial property rights, or both, and in no case unless the control and disposal of the land comprising such strips is placed definitely within the jurisdiction of the city under conditions approved by the planning commission. (Ord. 1149 § 26, 1992: Ord. 1112 § 27 (part), 1991; prior code § 23.42).

17.28.030 Street widths.

Streets and highways not shown on any master street and highway plan, or not affected by proceedings initiated by the council or approved by the council upon initiation by other legally constituted governmental bodies, shall not be of less width than those set forth in this section, except where it can be shown by the subdivider, to the satisfaction of the city council, that the topography of the small number of lots served and the probable future traffic development are such as to unquestionably justify a narrower width. Increased widths may be required where streets are to serve commercial property or where probable traffic conditions warrant such. Approval or determination of street or highway classification shall be made by the planning commission:

(1)    Major Streets or Highways. Minimum right-of-way, eighty-six feet in commercial areas and seventy-four feet in residential areas. Minimum pavement width, sixty-two feet in residential areas and sixty-two feet in commercial areas, and a three-foot utility easement on lot line on each side of the street right-of-way.

(2)    Secondary Streets or Highways. Minimum right-of-way, sixty feet. The city council may require up to eighty feet where the street may become a major street at some future date. Minimum pavement width, forty-two feet.

(3)    Minor Streets. Minimum right-of-way, fifty-two feet. Minimum pavement width, thirty-six feet.

(4)    Cul-de-sac Streets and Service Roads. Shall not exceed five hundred feet in length from the center of the cul-de-sac to the centerline of street intersections; fifty feet to the minimum radius of the cul-de-sac at the property line, and turnaround radius of forty-four feet to edge of combination curb and gutter.

(5)    Alleys. Minimum right-of-way, forty feet. Minimum pavement width, twenty-eight feet. (Ord. 1149 § 27, 1992: Ord. 1112 § 27 (part), 1991; prior code § 23.43).

17.28.040 Service roads and off-street parking.

When any lots proposed for commercial usage front on any major or secondary street or highway, the subdivider shall be required to dedicate and improve a service road to provide ingress to or egress from such lots; or in lieu thereof, if approved by the planning commission, the subdivider may dedicate for public use and improve an area approved by the planning commission and adjacent to such lots for off-street parking purposes. When the front of any lots proposed for residential usage front on any freeway, state highway or parkway, the subdivider shall dedicate and improve a service road at the front of the lots, unless such is already existent as a part of the freeway or parkway. In addition to any requirement for a service road, the planning commission may require adequate off-street parking areas for all lots proposed for commercial usage. (Ord. 1149 § 28, 1992: Ord. 1112 § 27 (part), 1991; prior code § 23.44).

17.28.050 Nonaccess and planting strips.

When the rear of any lots border any major or secondary street, highway, or parkway, the subdivider may be required to execute and deliver to the city an instrument, deemed sufficient by the city attorney, prohibiting the right of ingress and egress to the rear of such lots across the side lines of such streets or highways. When the rear of any lots border any freeway, state highway or parkway, the subdivider may be required to dedicate and improve a planting strip adjacent to such parkway or freeway. (Prior code § 23.45).

17.28.060 Width of alleys in lots proposed for commercial or industrial use.

When any lots are proposed for commercial or industrial usage, alleys at least forty feet in width shall be required at the rear thereof with adequate ingress and egress for truck traffic. (Prior code § 23.46).

17.28.070 Street names.*

All street names shall be as approved by the city council. (Ord. 1112 § 28 (part), 1991; prior code § 23.47).

*See also Chapter 11.24.

17.28.080 Acre or larger lot subdivisions.

Where a parcel is subdivided into lots of one acre or more, the planning commission may require that the blocks shall be of such size and shape, and be so divided into lots as to provide for the extension and opening of streets and alleys at such intervals as will permit a subsequent division of any parcel into lots of normal size. (Ord. 1149 § 29, 1992: Ord. 1112 § 28 (part), 1991; prior code § 23.48).

17.28.090 Easements.

The subdivider shall grant easements not less than five feet in width for public utility and sanitary sewer on each side of rear lot lines, along side lot lines, and in planting strips; whenever necessary; provided, easements of lesser width may be allowed when at the determination of the city engineer that the purposes of easements may be accomplished by easements of lesser width, and provided, further, that in such determination the city engineer shall prescribe the width of such easements. Easements for overhead wire lines shall be provided at the rear of all lots, except where alleys are available, and in contiguous locations to permit of anchorage, line continuity, ingress and egress. Dedication of easements shall be to the city for the purpose of installing utilities, planting strips and for other public purposes as may be ordered or directed by the council. (Prior code § 23.49).

17.28.100 Lot requirements.

(a)    The size and shape of lots shall be in conformance with any zoning regulations effective in the area of the proposed subdivision and shall not be less than the regulations specified therein. The planning commission may recommend the granting of exceptions to this provision where there are unusual topographic conditions, curved or cul-de-sac streets, or other special conditions. In unclassified districts, the planning commission shall specify the size and shape of all lots in conformance with the use proposed and approved by the planning commission.

(b)    The side lines of all lots, so far as possible, shall be at right angles to the street which the lot faces, or radial or approximately radial if the street is curved.

(c)    Building setback lines shall be indicated by dotted lines on the subdivision map, as required by the city council.

(d)    No lot shall be divided by a city boundary line.

(e)    Lots without frontage on a street will not be permitted.

(f)    Lots, other than corner lots, may front on more than one street where necessitated by topographic or other unusual conditions. (Ord. 1149 § 30, 1992: Ord. 1112 § 29, 1991; prior code § 23.50).

17.28.110 Walkways.

The subdivider maybe required to dedicate and improve walkways across long blocks or to provide access to schools, parks or other public areas. (Prior code § 23.51).

17.28.120 Storm and surface water drainage—Fencing of ditches and streams.

The subdivider shall, subject to riparian rights, dedicate a right-of-way for storm drainage purposes conforming substantially with the lines of any natural watercourse or channel, stream or creek that traverses the subdivision, or at the option of the subdivider, provide by dedication further and sufficient easements or construction, or both, to disposed of such surface and storm waters. The council may require adequate fencing of all ditches and streams when it is in the public interest. (Prior code § 23.52).

17.28.130 Subdivision must be considered in relation to master plan of city.

In all respects, the subdivision will be considered in relation to the master plan of the city, or any part thereof, or preliminary plans made in anticipation thereof. (Prior code § 23.53).

17.28.140 Deed restrictions.

A copy of the deed restrictions applicable to the subdivision shall be filed with the secretary of the planning commission at the time of filing the final map. (Ord. 1149 § 31, 1992: Ord. 1112 § 30, 1991; prior code § 23.54).

17.28.150 Land subject to inundation.

If any portion of any land within the boundaries shown on any final map is subject to overflow, inundation or flood hazard by storm waters, such fact and such portion shall be clearly shown on such final map enclosed in a border on each sheet of the final map and further adequate storm drain system or levees, dykes and pumping systems shall be provided, and if fill is used in tideland areas it shall be a minimum of two feet above high tide. (Prior code § 23.55).

17.28.160 Reservation of regional facilities.

Land reservation for parks, playgrounds, school sites or other public uses required on a regional basis to serve an area greater than that encompassed by the subdivision shall be reserved as such for a period of at least one year after the approval of the subdivision map by the city council, during which time the public agency concerned shall have the option of acquiring the property at its appraised price at the time of the exercise of the option. (Prior code § 23.56).

17.28.170 Prorating cost of areawide drainage facilities.

In cases where drainage facilities are necessary on an areawide basis to permit healthful and convenient development of the area, the subdivider shall pay a pro rata share of such facilities’ cost as determined by the city engineer and planning commission. (Ord. 1149 § 32, 1992: Ord. 1112 § 31, 1991; prior code § 23.57).

17.28.180 Cost of on site storm drainage.

The subdivider shall pay complete cost of all on site storm drainage up to and including twenty-four inch diameter. (Prior code § 23.58).