Chapter 16.16


16.16.010    General requirements.

16.16.020    Special design.

16.16.030    Private streets.

16.16.040    Grades.

16.16.050    Alignment.

16.16.060    Intersections.

16.16.070    Alleys.

16.16.080    Pedestrian ways.

16.16.010 General requirements.

The widths, alignments, and geometric designs of streets and highways shall conform to the City standards and to the following requirements:

A. All streets, as far as practicable, shall relate to the alignment of the existing adjacent streets or their proper projection and in general conformity with the master plan for the City.

B. The proposed street plan shall give consideration to the future division of adjoining and undivided property.

C. All streets shall be designed to serve the proposed use of the abutting land.

D. On part-width boundary streets the required right-of-way shall not be less than 40 feet.

E. Additional right-of-way or easements shall be provided where necessary to accommodate roadway slopes and drainage facilities. [Ord. 529 § 3.2(A), 1973].

16.16.020 Special design.

A. Design of streets shall make provisions for railroads, parkways, expressways, grade separations, flood-control channels, prevailing geological conditions, local drainage facilities and hillside property.

B. A cul-de-sac street shall not exceed 600 feet in length unless otherwise approved by the City Council.

C. A dead-end street shall not exceed 600 feet in length unless otherwise approved by the City Council.

D. The City Council may require greater street widths and improvements than standard on streets serving multiple residential, commercial or industrial land divisions.

E. Each street intended to be extended into adjoining property shall be terminated by a one-foot parcel of land extending across the end of the street and, in the case of a part-width street, a one-foot parcel of land shall extend along the entire side of the street. Said parcels shall be designated alphabetically as a lot, labeled as a future street and offered for dedication by appropriate certificate on the tract map or by separate instrument for a minor land division. The offer of dedication of said future street shall include a restriction against the use of same for access purposes until such time as it is accepted as a public street. [Ord. 529 § 3.2(B), 1973].

16.16.030 Private streets.

Private streets may be used for only those streets serving property within the land division and which access by the public is controlled by the land division design and by either posting or gating. Private streets may be used with the approval and consent of the City Council when the City Council finds that:

A. There are adequate provisions for their construction and continued maintenance; and

B. The welfare of the occupants of the development will be adequately served; and

C. The public welfare will not be impaired. [Ord. 529 § 3.2(C), 1973].

16.16.040 Grades.

The grades of highways, streets and alleys shall be not less than four-tenths of one percent and not greater than 15 percent. The desirable grades are between one-half percent and six percent. Grades of less than four-tenths of one percent and greater than 15 percent may be approved only when conclusive evidence shows that a lesser or steeper grade respectively is impractical. The high cost of excavating and/or importing borrow fill material thereby, making the development of a particular parcel of ground uneconomical, shall not be considered as conclusive evidence nor valid justification for a departure from the established minimum or maximum grade. [Ord. 529 § 3.2(D), 1973].

16.16.050 Alignment.

A. Curves in streets shall have as large a centerline radius as practical. The desirable minimum centerline radius for residential streets is 500 feet. The minimum centerline radius for residential streets within comparatively level terrain shall be 350 feet and within steep hillside terrain shall be 150 feet.

B. The minimum centerline radius for other types of streets shall be compatible with the street classification and anticipated usage. [Ord. 529 § 3.2(E), 1973].

16.16.060 Intersections.

A. All street intersections shall be as near right angles as possible with a minimum angle of 75 percent.

B. Street-to-street centerline offset of less than 250 feet shall not be permitted; except, in special design cases, offsets of less than five feet may be used if approved by the City Engineer.

C. A minimum curb return radius of 25 feet shall be provided at intersecting streets designated as collector streets or a lesser standard.

A minimum curb return radius of 25 feet shall be provided when one or both of the intersecting streets is designated as a secondary highway or greater.

D. The property line return radius shall be so set as to maintain a uniform parkway width or provide a uniform transition into the intersecting parkway. The property line radius shall be designed so as not to reduce the parkway width below the City standard.

E. Frontage road connections providing access to a major or arterial highway shall incorporate a bulb or knuckle connection in conformance to City standards.

F. Median openings or crossovers between opposing lanes of a divided highway or street shall be located only at approved intersections at intervals of not less than 500 feet. [Ord. 529 § 3.2(F), 1973].

16.16.070 Alleys.

A. Alleys shall be required in the rear of all lots used or intended to be used for business, commercial, or industrial use, unless adequate off-street parking areas and service loading and unloading areas to serve such properties are securely reserved for such use and are shown upon the map and approved by the City Council in the manner herein provided.

B. Alleys shall be required in the rear of all lots fronting directly on a street designated as a major street or greater unless determined through site plan review procedure that the requirement for the alleys does not exist.

C. The minimum width for alleys shall be 25 feet.

D. Where two alleys intersect, a triangular corner cut-off of not less than 15 feet along each alley line shall be provided.

E. Where a dead-end alley is proposed, an adequate turning area shall be provided to accommodate a truck having a 35-foot turning radius. It shall be such that said truck shall be able to turn around with only one backing movement. This turnaround shall be eliminated only under the circumstances of a previously adopted specific plan providing for the alley extension. [Ord. 529 § 3.2(G), 1973].

16.16.080 Pedestrian ways.

A. Pedestrian ways and pedestrian bridges shall be required when it is determined by the City Council that they are necessary for access to schools, recreation, or other public areas, or deemed necessary for the public safety and convenience.

B. Pedestrian ways shall be improved with block walls, concrete sidewalks, bridges, or as directed by the City Council.

C. Pedestrian ways shall be dedicated as an easement to the City and shall not be less than eight feet in width. Said easement shall be in such form as to be available for pedestrian or utility installation use.

D. Easements dedicated for pedestrian use shall not be used for drainage purposes. [Ord. 529 § 3.2(H), 1973].