All monuments shall be in accordance with § 236.15, Wis. Stats.
The arrangement, character, extent, width, grade, and location of all streets shall conform to the Comprehensive Plan and to these regulations and shall be considered in their relation to existing and planned streets, to reasonable circulation of traffic, to topographical conditions, to runoff of stormwater, and to public convenience and safety and in their appropriate relation to the proposed uses of the land to be served by such streets.
Continuation of existing streets. The arrangement of streets in new subdivisions shall make provision for the appropriate continuation at the same width of the existing streets in adjoining area wherever topographic and other physical conditions permit.
Future projection of streets. Where adjoining areas are not subdivided but may be subdivided, the arrangement of streets in a new subdivision shall make provision for the proper projection of streets into adjoining areas by carrying the new streets to the boundaries of the new subdivision at appropriate locations.
Blocks. Block length and width or acreage within bounding streets shall be such as to accommodate the size of residential lots required in the area by the Zoning Code and to provide for convenient access, circulation control, and safety of street traffic. Blocks shall be appropriate for the topography and the type of development contemplated.
Lot frontage. All lots shall have sufficient frontage on a publicly dedicated street to allow vehicular access.
Lot dimensions. The lot dimensions in subdivisions designed shall not be less than the minimum dimensions required to secure the minimum lot area specified in the Zoning Code except as herein provided. Area and width requirements of subdivision lots in the extraterritorial planning area shall conform to county zoning ordinances and Ch. SPS 383, Wis. Adm. Code.
[Amended 5-7-2013 by Ord. No. A-453]
Municipal boundaries. Lots shall follow, rather than cross, municipal boundary lines whenever practicable.
Corner lots. Corner lots shall have extra width to permit appropriate building setbacks from and orientation to both streets.
Butt lots. Butt lots shall be platted at least five feet wider than the average width of interior lots in the block; their use shall be avoided when possible.
Side lot lines. Side lines of lots shall be substantially at right angles to the street lines.
Watercourses. Lots abutting upon a watercourse, drainageway, channel or stream shall have an additional depth or width as required to assure house sites that are not subject to flooding.
Access. In the platting of small tracts of land fronting on limited access highways or thoroughfares where there is no other alternative, a temporary entrance may be granted. As neighboring land becomes subdivided and more preferable access arrangements become possible, such temporary access permits shall become void.
Through or double frontage lots. Such lots shall not be permitted except where such lots back onto a highway or arterial; such lots shall have additional depth of 10 feet for screen planting along rear lot lines.
Widths. All right-of-way (ROW) widths shall conform to the following minimum dimensions:
[Amended 2-6-2007 by Ord. No. A-365]
Greater ROW and/or pavement widths may be required by the Plan Commission, based on recommendation from by the City Engineer, depending upon anticipated traffic volumes, planned function of the street, and character of planned abutting land uses.
Street pavement width measurements shall be based on curb face to curb face dimensions.
Deflections. When connecting street lines deflect from each other at any one point by more than 10°, they shall be connected by a curve with a radius of not less than 150 feet.
Street jogs. Street jogs shall have a center-line offset of 150 feet or more when applied to minor streets or service streets; in all other cases, they shall be avoided.
Minor streets. Minor streets shall be so aligned that their use by through traffic will be discouraged.
Culs-de-sac shall be prohibited except where it would not be practical or feasible to construct connecting through streets due to topographic or other environmental constraints and where such culs-de-sac are specifically approved by the Common Council.
Where culs-de-sac are permitted, the maximum length of cul-de-sac streets shall be 600 feet measured along the center line from the intersection of origin to end of right-of-way and shall terminate with a turnaround of not less than 140 feet in diameter of right-of-way. Any water mains serving properties on culs-de-sac must be looped.
Half streets shall be prohibited except where essential to the reasonable development of the subdivision in conformity with the other requirements of these regulations and where it will be practicable to require the dedication of the other half when the adjoining property is subdivided. Such half streets must be specifically approved by the Common Council.
Whenever there is a half street adjacent to a tract to be subdivided, the other half of the street shall be platted within such tract prior to the granting of access. The probable length of time elapsing before dedication of the full right-of-way shall be considered in this decision.
Private streets. Private streets shall be constructed to City standards.
Hardship to owners of adjoining property avoided. The street arrangements shall not be such as to cause hardship to owners of adjoining property in platting their own land and providing convenient access to it.
Service street. Where a subdivision abuts or contains an existing or planned major thoroughfare or a railroad right-of-way, a street approximately parallel to and on each side of such right-of-way for adequate protection of residential properties and to afford separation of through and local traffic may be required. Such service streets shall be located at a distance from the major thoroughfare or railroad right-of-way suitable for the appropriate use of the intervening land, as for park purposes in residential districts, or for commercial or industrial purposes in appropriate districts. Such distances shall also be determined with due regard for the requirements of approach grades and future grade separations.
Reverse curves. A tangent at least 100 feet long shall be introduced between curves of reverse direction on arterial major and collector streets.
Street intersections. Streets shall be laid out so as to intersect as nearly as possible at right angles, and no street shall intersect any other street at less than 60° to ensure maximum visibility and safety. Intersections of more than four corners shall be prohibited.
Sight easements. Sight easements with tangent distances of 30 feet measured along property lines shall be provided at street intersections.
Street grades: Street grades, wherever feasible, shall not exceed the following, with due allowance for reasonable vertical curves. The City Engineer shall make the final determination if street grades exceed the following:
Corner radii. Roadways of street intersections shall be rounded by a radius of not less than 15 feet.
Public street subbase shall consist of five inches of three-inch crushed rock and four inches of three-fourths-inch crushed rock or as approved by the City Engineer.
All streets in areas served or capable of service by public water and sanitary sewer lines shall be surfaced with an all-weather hard surface material approved by the City Engineer. In areas not served by water and sewer, a suitable compacted gravel surface may be allowed.
Curb and gutters. In areas served or capable of service by public water and sanitary sewer lines, concrete curb and gutter approved by the City Engineer shall be required.
Location requirements. Except in case of a planned unit development, either a public or private alley shall be provided in a block where commercially zoned property abuts a major thoroughfare or a major street. The Common Council may waive this requirement where other provision is made for service access consistent with and adequate for the uses proposed. Alleys in residential areas other than those zoned for multiple-family use shall not be permitted.
Widths. All alley rights-of-way (ROW) and pavement widths shall conform to the following minimum standards:
Grades. All center-line gradients shall be at least 0.5% and shall not exceed 8%.
Alley intersections. Alley intersections and sharp changes in alignment shall be avoided.
[Amended 8-2-2011 by Ord. No. A-420]
Sidewalks and pedestrianways shall be provided on both sides of all public streets with the exception of industrially zoned lands. The grade, width, and surfacing shall be approved by the Plan Commission based on location and amount and character of use. The standard design width for a sidewalk shall be four feet. However, in situations where the proposed sidewalk adjoins an existing sidewalk of different width or where anticipated levels of use shall require a different standard, the Plan Commission may require a different design standard to match the existing sidewalk or anticipated levels of use. The owner or developer shall submit standard drawings indicating the existing and proposed grades of all such improvements. All sidewalks and pedestrianways shall be approved by the City Engineer
In blocks over 900 feet long, paved and fenced pedestrian crosswalks through the blocks, and at least 12 feet wide, may be required in locations deemed necessary to public health, convenience, and necessity.
Prior to recording of the final plat, the subdivider shall submit a tree planting plan for the street terraces, parkways, boulevards, landscaped areas within culs-de-sac, dedicated off-road pedestrianways and bikeways. The planting plan shall be in conformance with Chapter 307, Trees, of the City Code and approved by the Plan Commission.
Number of street trees. Such street tree plan shall provide at least one street tree per 50 linear feet of public street.
Minimum size. The minimum planting size for all street trees shall be two inches to 2.5 inches in diameter.
Species. The species of street tree shall be a type known to be a sturdy, disease-resistant tree suitable for use as a street tree and lacking any nuisance characteristics. A list of approved trees shall be maintained by the City Forester/Public Works Office. The Parks Committee shall review the list at least biannually and make recommendations as to the content of the list to the City Council.
[Amended 3-5-2013 by Ord. No. A-443; 3-5-2019 by Ord. No. A-534]
Street names. Names of new streets shall not duplicate existing or platted street names unless a new street is a continuation of or in alignment with an existing or platted street, in which event it shall bear the same name of the existing or platted street so in alignment. Street names shall be subject to the approval of the Plan Commission.
Street signs. Street signs shall be of a standard design and materials as approved by the Director of Public Works.
[Amended 10-10-2006 by Ord. No. A-361]
Water line extensions. Extensions of the public water supply system shall, when available, be designed so as to provide public water service to each lot. The availability of services and the design of said extensions shall be in accordance with the standards of the City and approved by the City Engineer.
Water mains. A minimum water main of eight-inch cast-iron pipe or other approved pipe shall be required. Mains over eight inches in size may be required. Mains constructed of a nonconductive material shall have a locating wire installed, according to City standards.
[Amended 12-15-2015 by Ord. No. A-495]
Fire hydrants. Fire hydrants shall be installed by the subdivider in accordance with the standards of the City and approved by the City Engineer.
Sanitary sewer extensions. Extensions of the public sanitary sewer system shall, when available, be designed so as to provide sewer service to each lot. The availability of services and the design of said extensions shall be in accordance with the standards of the City and approved by the City Engineer.
Sewer lines. Unless otherwise required, a sanitary sewer of eight-inch, PVC and ABS truss pipe shall be installed as the minimum size placed at grades approved by the City Engineer. Service lines shall be four inches, and root-repellent joint material is required. Service lines constructed of a nonconductive material shall have a locating wire installed, according to City standards.
[Amended 2-6-2007 by Ord. No. A365]
All persons who are creating any land division, subdivision or minor subdivision shall comply with Chapter 162, Drainage, of the City Code.
[Amended 2-6-2007 by Ord. No. A365]
Each house service shall be run from the main to the property line, where a cap or plug shall be placed until the service is extended to the structure. A one-inch Type K copper water service, corporation cock and curb box and stop and four-inch cast iron pipe, PVC, or ABS truss sewer service shall be minimum requirements. Service lines constructed of a nonconductive material shall have a locating wire installed, according to City standards.
On any parcel zoned R-2, and on any other parcel on which a two-dwelling-unit building is to be constructed, a complete separate water service shall be installed for each of the two dwelling units so that each unit will have its own shutoff valve. Provision for such separate water services for R-2 lots shall be a requirement for the plat approval for any plat that contains lots which are zoned R-2. With respect to any parcel zoned other than R-2 on which a two-family residential unit building is to be constructed, the owner of such parcel, at the time that a building permit is sought for such construction, shall provide for separate water services for each unit at such time as a requirement for building permit approval.
Underground service. When practicable and feasible, all utilities shall be placed underground. All underground work in the public street right-of-way shall be completed prior to street surfacing. All utility lines for telephone and electrical service shall be placed in rear line easements when carried on overhead poles.
Easements for utilities. Easements at least 10 feet wide, centered on rear and other lot lines as required, shall be provided for utilities where necessary. They shall have continuity of alignment from block to block, and at deflection points easements may be required along property lines from utility easements on rear lot lines to the right-of way.
All required improvements shall be inspected by the City Engineer and/or the Public Works Director during construction.