Chapter 12.08
ROAD AND SIDEWALK CONSTRUCTION, MAINTENANCE, AND REPAIR

Sections:

12.08.010    Borough to maintain dedicated thoroughfares.

12.08.020    Improvement of private property.

12.08.030    Plan of road construction and development.

12.08.040    Standards applicable.

12.08.050    Local road construction standards.

12.08.060    Other requirements not eliminated.

12.08.070    Road construction standards – Introduction.

12.08.080    Road construction standards – Construction categories.

12.08.090    Road construction standards – Widths and topping.

12.08.100    Road construction standards – Structures and bridges.

12.08.110    Road construction standards – Vertical and horizontal alignment.

12.08.120    Road construction standards – Drainage and culvert material.

12.08.130    Road construction standards – Typical section materials.

12.08.140    Road construction standards – General.

12.08.150    Sidewalks, curbs, gutters, and accessibility.

12.08.160    Utility installation.

12.08.170    Construction by parties other than the borough.

12.08.180    Fee schedule.

12.08.190    Definitions.

12.08.010 Borough to maintain dedicated thoroughfares.

The borough shall assume and discharge the obligation of maintaining streets and alleys within the townsite service area in a condition suitable for vehicular traffic only:

A. Within the boundaries of all streets and alleys platted in the townsite service area;

B. Within budget constraints; and

C. Within the boundaries of any streets or alleys subsequently created within the townsite service area by each of the following things being done:

1. The filing of a plat in the office of the recorder at Juneau, Alaska, showing with definiteness and certainty the boundaries of such streets and alleys;

2. The filing of an identical plat with the borough clerk;

3. The formal dedication by the owner of such streets and alleys of the land embraced therein to the public for street purposes, including the construction, repair, and maintenance of water, sewer, electric, telephone, and other utility lines and systems thereon; which dedication must be executed in the manner required for the execution of deeds under state law or as modified herein;

4. The method of financing maintenance is identified;

5. The delivery of such dedication to the planning commission for its acceptance or rejection;

6. The acceptance of such dedication by the planning commission; provided, however, that no streets or alleys shall be constructed, repaired or maintained at borough expense unless specifically authorized by the assembly. No dedication shall be accepted by the borough unless the pattern of the streets and alleys so dedicated is in harmony with the present street and alley pattern of the borough, or is such as to not cause undue inconvenience or expense in providing public services along such streets and alleys. No such dedication shall be accepted unless the width of such streets and alleys conforms to the width of adjoining streets and alleys or as approved by the planning commission.

D. Maintenance of public roads and streets outside of the townsite service area may be provided by a road maintenance service area (RMSA) created by authority of HBC Title 7. The RMSA board shall be responsible for establishing standards of maintenance within that service area.

E. Nonroutine maintenance may be performed on borough roads outside the townsite service area when the manager determines that circumstances exist that hinder the general public interest. The manager shall report occurrences to the assembly. (Ord. 08-03-180)

12.08.020 Improvement of private property.

No borough funds shall be expended for the construction of any sidewalk, curbing, paving, or improvement or repair of any driveway, alley, or other area on private property unless the assembly shall first have entered into a lease with the owner thereof or other satisfactory agreement permitting public use thereof. (Ord. 08-03-180)

12.08.030 Plan of road construction and development.

The streets and alleys of the borough shall be constructed, graded and improved when existing rights-of-way permit it and in accordance with the provisions of this chapter as administered by the manager. It shall be unlawful to destroy, construct, or repair any street, alley, culvert, bridge, sidewalk, ditch, sewer, or drain within the corporate limits of the borough on property within its jurisdiction without first obtaining permission from the manager. (Ord. 08-03-180)

12.08.040 Standards applicable.

All public access roads in the Haines Borough must be constructed in accordance with an approved plat and meet or exceed the requirements set forth in this section or in accordance with a variance granted by the planning commission due to extenuating circumstances. (Ord. 08-03-180)

12.08.050 Local road construction standards.

The borough adopts the standards for construction of roads contained in this chapter. Should there be a conflict between the road construction standards contained herein and those contained in the subdivision ordinance (Chapter 18.100 HBC) or other chapters of the borough code, these standards shall control. (Ord. 08-03-180)

12.08.060 Other requirements not eliminated.

This chapter only establishes design and construction standards and does not eliminate any other requirements that may be established by federal or state statutes, borough ordinances or other regulations adopted pursuant to these laws. Permits may be required in instances involving construction in flood hazard zones, wetlands and fish habitat. Grading, excavation and fill permits, and storm water/water separation waivers may be required. The land owner is responsible for knowing the necessity of a permit and acquiring it. (Ord. 18-04-494 § 4; Ord. 08-03-180; Ord. 04-06-064)

12.08.070 Road construction standards – Introduction.

A. Enforcement. The borough shall inspect road construction to ensure adherence to an approved plat and borough standards. Inspection may include test holes; engineering analysis of road geometry, drainage, and general adequacy for anticipated traffic. Construction not adhering to an approved design or construction standards shall be brought into compliance by the developer.

B. Design Speeds. All categories of roads named in this chapter have a statutory speed designation of 25 miles per hour for residential areas, except that collector roads may enjoy 35 miles per hour. Actual speed design will be determined by factors of terrain and construction costs. The posted speed may be lower than the design speed, and shall be set by the municipality with due consideration to neighborhood safety; presence of schools, houses, parks and crosswalks; the presence of driveways, parked vehicles and multiple turn locations and the effectiveness of enforcement. (Ord. 08-03-180)

12.08.080 Road construction standards – Construction categories.

A. Internal Subdivision Roads. The standard to which a road is constructed shall be based on the categories set forth below. The category shall also be determined by lots indirectly served where the road is a collector or subcollector and provides necessary access to lots not otherwise served by a collector or sub-collector.

Category I:

A cul-de-sac road or other minor road that serves less than 20 lots.

Category II:

A road that serves between 20 and 39 lots.

Category III:

A road that serves 40 or more lots.

B. Category Determination. The borough will determine the category of road based on the standards set forth in this chapter. If the developer disagrees with the category the applicant may request a review by the manager.

C. Existing Collector Roads. Existing collector roads shall be reconstructed to a Category III in a new subdivision, where the average daily traffic (ADT) on the existing collector road can be projected to exceed 300 after subdivision. Alaska Department of Transportation and Public Facilities Division of Planning, Mapping Section current ADT readings shall be referenced.

D. Half-Streets. Where a previous dedicated half-street exists in a subdivision adjacent to a new subdivision, the second half of the street within the proposed subdivision shall be dedicated to the borough for public use by the subdivider. (Ord. 08-03-180)

12.08.090 Road construction standards – Widths and topping.

Category

Road Width

D1 or Grading-C Topping

Right-of-Way Width

Total Width

I

24 ft.

4 in.

60 ft.

24 ft.

II

28 ft.

4 in.

60 ft.

28 ft.

III

30 ft.

6 in.

60 ft.

30 ft.

These widths are the minimum. The developer may build wider roads to standards. Additional width may be required for utility easements and drainage. Three-foot-wide bicycle paths are included in Category II and III road widths. (Ord. 08-03-180)

12.08.100 Road construction standards – Structures and bridges.

Bridges, bottomless culverts, walls and other structures on roads certified for borough maintenance shall be prepared and stamped by a licensed professional civil engineer, and shall be submitted to the borough prior to acceptance of the road for maintenance. (Ord. 08-03-180)

12.08.110 Road construction standards – Vertical and horizontal alignment.

A. Vertical Alignment. Unless granted a variance by the planning commission, roads shall be constructed in a manner such that grades shall not exceed 10 percent and crossroads within 20 feet of a through-road intersection shall not exceed four percent grade.

B. Horizontal Alignment. Roads shall be constructed along the centerline of the right-of-way and shall have curves meeting the minimum radius requirements of not less than 300 feet for rights-of-way, 100 feet in width or more, and not less than 200 feet on all other roads.

C. Clear Zone. The roadside shall be clear of hazardous objects or conditions for a distance consistent with speed, traffic volume, and geometric conditions of the site. Roads shall be constructed with a minimum clear zone of six and one-half feet. Where hazardous physical features exist which cannot be located outside of the clear zone, alternative treatments such as guardrails may be required.

D. Culs-de-Sac (Turnarounds).

1. Roads designed to have one end closed permanently shall be no longer than 500 feet from the center of the intersection to the radius point of the cul-de-sac, and shall terminate with a turnaround having at least a 100-foot-diameter right-of-way and a roadway at least 75 feet in diameter. The turnaround shall be constructed to a four percent grade or less.

2. Temporary roads longer than 500 feet may be constructed with one end closed with a conditional use permit approved by the planning commission. A conditional use permit may be granted with a minimum of the following criteria:

a. The road shall terminate with a turnaround having at least a 100-foot-diameter right-of-way and a roadway at least 75 feet in diameter. The turnaround shall be constructed to a four percent grade or less.

b. The developer shall post a performance bond.

c. The planning commission shall set an expiration date for the conditional use permit.

E. Intersections. A minimum unobstructed sight distance of 150 feet shall be provided unless a variance is granted due to topography, traffic flow or other physical characteristics. Appropriate warning signs may be required if an exception to the sight distance is granted. Road intersections shall be constructed with a minimum return radius of 20 feet. (Ord. 10-07-235 § 4; Ord. 08-03-180)

12.08.120 Road construction standards – Drainage and culvert material.

A. Roads shall be constructed to prevent ponding of runoff waters in roadside ditches. Drainage ditches shall be constructed such that runoff waters will be conveyed to natural drainage courses, ditches or waterways, or other manmade drainage courses. Minimum depth of ditches shall be two feet unless special circumstances are approved by the borough. There shall be a maximum of one and one-half to one slope from the shoulder to the bottom of the ditch. There shall be a maximum of one to one back slope except in cases where bedrock is present.

B. Culvert outlets shall be constructed to prevent excessive siltation of riparian habitats, channel erosion or drainage to public or private property. The borough may require engineering analysis and design for locations susceptible to flooding, excessive siltation, or other natural conditions potentially damaging to the right-of-way, adjacent property, or water courses and water bodies. Roadway cross-culverts and driveway culverts shall be a minimum diameter of 18 inches, unless special circumstances are approved by the borough. The length of the culvert shall be four feet longer than the road width when placed perpendicular to the roadway, and in any case, shall protrude a minimum of two feet beyond outer total road edge. Culverts, coupling bands and special sections shall be corrugated steel pipe, at a minimum of 16 gauge. Plastic culverts shall meet AASHTO Standard Section 706-2.07, corrugated polyethylene pipe, AASHTO M 294, Type S. (Ord. 08-03-180)

12.08.130 Road construction standards – Typical section materials.

Sub-base shall contain no muck, frozen materials, roots, sod or other deleterious matter. The Haines Borough will conduct an inspection prior to grading-C or D1 application of the sub-base on Category I and II roads. The Category III road’s sub-base will adhere to specifications called out in the project specific design described in HMC 12.08.140(B). (Ord. 08-03-180)

12.08.140 Road construction standards – General.

A. Typical Section. Gravel roads shall be constructed in accordance with the gravel road typical section drawing and associated Table A [see figure 1]. Additional requirements are:

1. Roads must be contiguous with the existing road system maintained by the borough and the state. All roads must be on a dedicated right-of-way and must be built along the right-of-way centerline. A minimum right-of-way width shall be 60 feet, enabling utilities to be installed outside the edge of roadside ditches.

2. All organic material shall be stripped and removed to a minimum depth of four feet below the finished grade. If geotextile is used over organics, then the depth of sub-base must be three feet minimum or greater as required for stable embankment.

3. The roadway embankment shall be placed in maximum one-foot lifts and compacted to not less than 90 percent of maximum density, as specified by AASHTO for material application. Density shall be determined by AASHTO T 180, method D.

4. Onsite usable excavation material may be used as sub-base with approval from the public works superintendent.

B. Project-Specific Design. Category III roads require a project-specific design prepared and sealed by a licensed professional civil engineer in accordance with the Category III gravel road typical section drawing and associated Table A. The design shall be approved by the borough as provided for in HMC Title 18. Once the project is complete, as-built plans, prepared and sealed by a licensed professional civil engineer, shall be submitted to the borough. The as-built shall illustrate horizontal alignment, finish grade profile, typical section of the roadbed, and material specifications. The as-built plans are required prior to municipal road maintenance. (Ord. 08-03-180)

12.08.150 Sidewalks, curbs, gutters, and accessibility.

A. The manager shall require that an area 10 feet wide adjoining the street boundary be reserved on each side of the street, with the curb line being on the opposite side of such 10-foot reserved area. All proposed sidewalks in the business area must receive written approval from the manager. All curb lines will be rounded at the corners on a radius of 10 feet at entrances to alleys and on a radius of 17.5 feet on cross streets. Sidewalk widths may be appealed to the manager.

B. It shall be unlawful to construct any sidewalk less than six feet in width on Main Street, Front Street, Second Avenue, Third Avenue, Fourth Avenue, Fifth Avenue, Sixth Avenue, Dalton Street, Union Street, or View Street within the corporate limits of the borough, except at the direction of the manager.

C. The outside boundary of a sidewalk will be established by the manager to prevent irregularities in alignment with existing or proposed sidewalks.

D. Property lines shall be determined at the expense of the owner of the property by a registered land surveyor.

E. Curbs and gutters shall be constructed adjacent to sidewalks at the direction of the manager.

F. Ramps and access shall be provided as directed by the manager. (Ord. 08-03-180)

12.08.160 Utility installation.

A. Aboveground Utilities. All poles or structures for utility lines, hydrants, and other public service facilities to be constructed above the level of the ground shall be placed between the sidewalk and the curb line if built on a street and within one foot of the boundary of any alley if built in an alley, unless specific authority is obtained from the assembly to do otherwise.

B. Underground Utilities. A utility facility may be constructed, placed, or maintained along, under, or within a borough right-of-way only in accordance with regulations adopted by the borough and if authorized by a utility permit issued by the borough. Utility permits are valid for two years from the date of issuance.

C. Access Easement. The borough retains a 10-foot easement on each side of, and perpendicular to, all borough-owned sewer and water lines and associated appurtenances. (Ord. 08-03-180)

12.08.170 Construction by parties other than the borough.

Construction of streets, alleys, sidewalks, curbs, and other parts of such streets and alleys, exclusive of any utility lines, may be constructed by persons or corporations other than the borough at the owner’s expense or with borough contribution to the cost thereof as agreed by the assembly. All such construction must be in accordance with the requirements and specifications established by the manager, who shall put the same in writing at the request of any such builder. (Ord. 08-03-180)

12.08.180 Fee schedule.

The assembly may establish a fee schedule to cover costs related to road and sidewalk standard construction inspection. (Ord. 08-03-180)

12.08.190 Definitions.

For the purpose of this chapter, the following definitions apply:

“AASHTO” means the American Association of State Highway and Transportation Officials.

“Arterial road” means a road intended to carry traffic from local and subdivision roads to major highways. Such roads primarily accommodate relatively long distances at relatively high speeds.

“Assembly” means the Haines Borough assembly.

“Collector roads” means roads which both provide land access and carry traffic from local or subdivision roads to arterial or major highway systems.

“Developer” means the person or entity that holds fee simple title of property being subdivided.

“Local roads” means internal subdivision roads or a road designed and intended to serve local areas. Such roads primarily accommodate land access to abutting property. Local roads feed traffic into collector and arterial street systems.

“Motor vehicle” means a vehicle which is self-powered except a vehicle manned by human or animal power.

“Planning and zoning” means the Haines Borough lands department consisting of staff employed to administer provisions of borough code addressing planning and zoning, subdivision, land use and development.

“Road construction standards” means the minimal standards set forth in this chapter for the construction of roads in the Haines Borough.

“Road maintenance service area (RMSA)” means a non-area-wide political subdivision of the borough established to maintain roads within its boundaries.

“Road maintenance service area board” and “the board” mean the governing body of an RMSA, either appointed or elected as provided for by ordinance.

“Subcollector road” means a local road which also provides through traffic service between local roads and collector, arterial, or major highway roads. (Ord. 08-03-180)