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Town of Shapleigh, ME
York County
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Code
New Laws (4) Index
A. 
The Board shall not approve any subdivision plan unless proposed street and stormwater management systems are designed in accordance with any local ordinance or the specifications contained in these regulations. Approval of the final plan by the Board shall not be deemed to constitute or be evidence of acceptance by the municipality of any street or easement.
B. 
Subdividers shall submit to the Board, as part of the final plan, detailed construction drawings showing a plan view, profile and typical cross-section of the proposed streets. The plans shall include the following information:
(1) 
Date, scale and magnetic or true North point.
(2) 
Intersections of the proposed street with existing streets.
(3) 
Roadway and right-of-way limits, including edge of pavement, edge of shoulder, sidewalks and curbs.
(4) 
Kind, size, location, material, profile and cross-section of all existing and proposed drainage structures and their location with respect to the existing natural waterways and proposed drainageways.
(5) 
Complete curve data for all horizontal and vertical curves.
(6) 
Turning radii at all intersections.
(7) 
Centerline gradients.
(8) 
Locations of all existing and proposed overhead and underground utilities, to include but not be limited to water, sewer, electricity, telephone, lighting and cable television.
C. 
Upon receipt of plans for a proposed public street, the Board shall forward one copy to the municipal officers, the Road Commissioner and the Municipal Engineer for review and comment. Plans for streets which are not proposed to be accepted by the municipality shall be sent to the Municipal Engineer for review and comment.
A. 
These design standards shall be met by all streets within subdivisions and shall control the roadway, shoulders, curbs, sidewalks, drainage systems, culverts and other appurtenances.
B. 
Streets shall be designed to discourage through traffic within a residential subdivision.
C. 
Wherever existing or other proposed streets, topography and public safety permit, streets shall run in east-west directions to maximize access for solar energy utilization. The character, extent, width and grade of all streets shall be considered in their relation to existing or planned streets.
D. 
Reserve strips controlling access to streets shall be prohibited except where their control is definitely placed in the municipality.
E. 
Adjacent to areas zoned and designed for commercial use, or where a change of zoning to a zone which permits commercial uses is contemplated by the municipality, the street right-of-way and/or pavement width shall be increased on each side by half of the amount necessary to bring the road into conformance with the standards for commercial streets in these regulations.
F. 
Where a subdivision borders an existing narrow street (not meeting the width requirements of the standards for streets in these regulations), or when the Comprehensive Plan indicates plans for realignment or widening of a road that would require use of some of the land in the subdivision, the plan shall indicate reserved areas for widening or realigning the road marked "Reserved for Road Realignment (Widening) Purposes." Land reserved for such purposes may not be included in computing lot area or setback requirements of Chapter 105, Zoning. When such widening or realignment is indicated on the Official Map, the reserve area shall not be included in any lot but shall be reserved to be deeded to the municipality or state.
G. 
Where a major subdivision abuts or contains an existing or proposed arterial street, no residential lot may have vehicular access directly on to the arterial street. This requirement shall be noted on the plan and in the deeds of any lot with frontage on the arterial street.
H. 
Any subdivision containing 15 dwelling units or more shall have at least two street connections with existing public streets, streets shown on an Official Map or streets on an approved subdivision plan for which performance guaranties have been filed and accepted. Any street serving 15 dwelling units or more shall have at least two street connections leading to existing public streets, streets shown on an Official Map or streets on an approved subdivision plan for which performance guaranties have been filed and accepted.
I. 
The following design standards apply according to street classification:
[Amended 3-9-2019 ATM by Art. 4; 3-11-2022 ATM by Art. 72]
Type of Street
Description
Arterial
Collector
Minor
Private Way
Industrial/ Commercial
Minimum right-of- way width (feet)
80
50
50
50
80
Minimum pavement width (feet)
44
24
202
121
44
Minimum grade
.5%
.5%
.5%
N/A
5%
Maximum grade
5%
6%
6%
10%
5
Minimum centerline radius (feet)
800
230
150
N/A
800
Minimum tangent between curves of reverse alignment (feet)
300
200
100
N/A
300
Roadway crown (inches)
1/4/ft.
1/4/ft.
1/4/ft.
N/A
1/4/ft.
Minimum angle of street intersections
90°
90°
90°
90°
90°
Maximum grade within 75 feet of intersection
2%
2%
2%
N/A
2%
Minimum curb at intersection (feet)
30
20
15
N/A
30
Minimum right-of- way radii at intersections (feet)
20
10
10
10
20
Minimum width of shoulders, each side (feet)
3
3
3
3
9
NOTES:
1Pavement requirement for a private way in a minor subdivision may be at the Board's discretion.
2Pavement requirement for a minor subdivision street may be at the Board's discretion.
J. 
The center line of the roadway shall be the center line of the right-of-way.
K. 
Dead-end streets. In addition to the design standards above, dead-end streets shall be constructed to provide a cul-de-sac turnaround with the following requirements for radii: Property line 65 feet; outer edge of pavement 50 feet. The Board may require the reservation of a twenty-foot easement in line with the street to provide continuation of pedestrian traffic or utilities to the next street. The Board may also require the reservation of a fifty-foot easement in line with the street to provide continuation of the road where future subdivision is possible.
L. 
Grades, intersections and sight distances.
(1) 
Grades of all streets shall conform in general to the terrain, so that cut and fill are minimized while maintaining the grade standards above.
(2) 
All changes in grade shall be connected by vertical curves to provide for the minimum sight distances below.
(3) 
New street intersections or driveway curb cuts.
(a) 
Where new street intersections or driveway curb cuts are proposed, sight distances, as measured along the road onto which traffic will be turning, shall be based upon the posted speed limit and conform to the table below:
Posted speed limit (mph)
25
30
35
40
45
50
55
Sight distance (feet)
250
300
350
400
450
500
550
(b) 
Where necessary, corner lots shall be cleared of all growth and sight obstructions, including ground excavation, to achieve the required visibility.
(4) 
Cross (four-cornered) street intersections shall be avoided insofar as possible, except as shown on the Comprehensive Plan or at other important traffic intersections. A minimum distance of 200 feet shall be maintained between center lines of side streets.
M. 
(Reserved)[1]
[1]
Editor's Note: Former Subsection M, Sidewalks, was repealed 3-11-2022 ATM by Art. 72.
N. 
Where installed, curbing shall be granite or bituminous concrete and shall be installed on a thoroughly compacted gravel base of six inches minimum thickness, except that bituminous curbing shall be installed on the base course of the pavement. The specified pavement width above shall be measured between the curbs.
A. 
Minimum thickness of material after compaction shall be as follows:
[Amended 3-11-2022 ATM by Art. 72]
Type of Street
Minimum Requirements
Street
Arterial
Collector
Minor
Private Way
Industrial/ Commercial
Aggregate subbase course (inches) (maximum sized stone 4 inches)
18
18
18
12
18
Crushed aggregate base course (inches)
4
3
3
3
4
Hot bituminous pavement (inches)
Total thickness
3 1/4
2 1/2
2 1/21
3
Surface course
1 1/2
3/4
3/41
1 1/4
Base course
1 3/4
1 3/4
1 3/41
1 3/4
NOTES:
1Pavement requirement for a minor subdivision street may be at the Board's discretion.
B. 
Preparation.
(1) 
Before any clearing has started on the right-of-way, the center line and side lines of the new road shall be staked or flagged at fifty-foot intervals.
(2) 
Before grading is started, the entire right-of-way shall be cleared of all stumps, roots, brush and other objectionable material. All ledge, large boulders and tree stumps shall be removed from the right-of-way.
(3) 
All organic materials shall be removed to a depth of two feet below the subgrade of the roadway. Rocks and boulders shall also be removed to a depth of two feet, or a depth meeting the Road Commissioner's approval, below the subgrade of the roadway. On soils which have been identified by the Town Engineer as not suitable for roadways, the subsoil shall be removed from the street site to a depth of two feet below the subgrade and replaced with material meeting the specifications for gravel aggregate subbase below.
(4) 
Side slopes shall be no steeper than a slope of three feet horizontal to one foot vertical, and shall be graded, limed, fertilized and seeded according to the specifications of the erosion and sedimentation control plan.
(5) 
All underground utilities shall be installed prior to paving to avoid cuts in the pavement. Building sewers and water service connections shall be installed to the edge of the right-of-way prior to paving.
C. 
Bases and pavement.
(1) 
Bases.
(a) 
Aggregate subbase course.
[1] 
The aggregate subbase course shall be sand or gravel of hard durable particles free from vegetative matter, lumps or balls of clay and other deleterious substances. The gradation of the part that passes a three-inch square mesh sieve shall meet the following grading requirements:
Sieve Designation
Percentage by Weight Passing Square Mesh Sieves
1/4-inch
25% to 70%
No. 40
0% to 30%
No. 200
0% to 7%
[2] 
Aggregate for the subbase shall contain no particles of rock exceeding four inches in any dimension.
(b) 
Aggregate base course.
[1] 
The aggregate base course shall be sand or gravel of hard durable particles free from vegetative matter, lumps or balls of clay and other deleterious substances. The gradation of the part that passes a three-inch square mesh sieve shall meet the following grading requirements:
Sieve Designation
Percentage by Weight Passing Square Mesh Sieves
1/2-inch
45% to 70%
1/4-inch
30% to 55%
No. 40
0% to 20%
No. 200
0% to 5%
[2] 
Aggregate for the base shall contain no particles of rock exceeding four inches in any dimension.
(2) 
Pavement joints. Where pavement joins an existing pavement, the existing pavement shall be cut along a smooth line and form a neat, even, vertical joint.
(3) 
Curbs and gutters.
(a) 
Street curbs and gutters shall be installed as required by the Board.
(b) 
Curbs shall be vertical except when sloped curbs are specifically allowed by the Board.
(4) 
Pavements.
(a) 
Minimum standards for the base layer of pavement shall be the M.D.O.T. specifications for plant mix grade B with an aggregate size no more than one inch maximum.
(b) 
Minimum standards for the surface layer of pavement shall meet the M.D.O.T. specifications for plant mix grade C with an aggregate size no more than 3/4 inch maximum.
A. 
Adequate provision shall be made for disposal of all stormwater generated within the subdivision and any drained groundwater through a management system of swales, culverts, underdrain and storm drains. The stormwater management system shall be designed to conduct stormwater flows to existing watercourses or storm drains.
(1) 
All components of the stormwater management system shall be designed to meet the criteria of a twenty-five-year storm based on rainfall data for Portland, Maine.
(2) 
The minimum pipe size for any storm drainage pipe shall be 12 inches. Maximum trench width at the pipe crown shall be the outside diameter of the pipe plus two feet. Pipe shall be bedded in a fine granular material, containing no stones larger than three inches, lumps of clay or organic matter, reaching a minimum of six inches below the bottom of the pipe extending to six inches above the top of the pipe.
(3) 
Catch basins shall be installed where necessary and located at the curbline.
(4) 
Outlets shall be stabilized against soil erosion by stone riprap or other suitable materials to reduce stormwater velocity.
B. 
The stormwater management system shall be designed to accommodate upstream drainage, taking into account existing conditions and approved or planned developments not yet built and shall include a surplus design capacity factor of 25% for potential increases in upstream runoff.
C. 
Downstream drainage requirements shall be studied to determine the effect of the proposed subdivision. The storm drainage shall not overload existing or future planned storm drainage systems downstream from the subdivision. The subdivider shall be responsible for financing any improvements to existing drainage systems required to handle the increased storm flows.
D. 
Wherever the storm drainage system is not within the right-of-way of a public street, perpetual easements shall be provided to the Town allowing maintenance and improvement of the system.
E. 
Where soils require a subsurface drainage system, the drains shall be installed and maintained separately from the stormwater drainage system.
A. 
Materials.
(1) 
Reinforced concrete pipe. Reinforced concrete pipe shall meet the requirements of ASTM Designation C-76 (AASHTO M 170). Pipe classes shall be required to meet the soil and traffic loads with a safety factor of 1.2 on the .01 inch crack strength with a Class B bedding. Joints shall be of the rubber gasket type meeting ASTM Designation C 443-70, or of an approved preformed plastic jointing material such as Ramnek. Perforated concrete pipe shall conform to the requirements of AASHTO M 175 for the appropriate diameters.
(2) 
Asbestos-cement pipe. Asbestos-cement pipe shall meet the requirements of ASTM Designation C-428 (AASHTO M 189). Pipe classes shall be required to meet the soil and traffic loads with a safety factor of 1.5 on the crushing strength. Joints shall be of the rubber gasket type meeting ASTM Designation D-1869-63, or of an approved preformed plastic sleeve type.
(3) 
Corrugated metal pipe. Corrugated metal pipe shall be bituminous coated meeting the requirements of AASHTO Designation M 190 Type C for iron or steel pipe or AASHTO Designation M 196 for aluminum alloy pipe for sectional dimensions and type of bituminous coating. Pipe gauge shall be as required to meet the soil and traffic loads with a deflection of not more than 5%.
(4) 
ABS pipe. ABS (Acrylonitrile-butadiene-styrene) composite pipe and fittings shall conform to the requirements of AASHTO M 264 and AASHTO M 265. Perforated pipe shall conform to the requirements of AASHTO M 36, Type III.
(5) 
Corrugated plastic pipe. Corrugated plastic pipe shall conform to the requirements of AASHTO M-252.
(6) 
Manholes. Manholes shall be of precast concrete truncated cone section construction meeting the requirements of ASTM Designation C 478 or precast concrete manhole block construction meeting the requirements of ASTM Designation C 139, radial type. Bases may be cast in place 3,000 pounds per square inch, twenty-eight-day strength concrete or may be of precast concrete, placed on a compacted foundation of uniform density. Metal frames and traps shall be set in a full mortar bed and with tops shall conform to the requirements of AASHTO M 103 for carbon steel castings, AASHTO M 105, Class 30 for gray iron castings or AASHTO M 183 (ASTM A 283, Grade B or better) for structural steel.
(7) 
Catch basins. Catch basins shall be of precast concrete truncated cone section construction meeting the requirements of ASTM Designation C 478 or precast concrete manhole block construction meeting the requirements of ASTM Designation C 139, radial type. Castings shall be square cast iron sized for the particular inlet condition with the gratings perpendicular to the curbline. Bases may be cast in place 3,000 pounds per square inch (psi) twenty-eight-day strength concrete or may be of precast concrete, placed on a compacted foundation of uniform density. Metal frames and traps shall be set in a full mortar bed and with tops shall conform to the requirements of AASHTO M 103 for carbon steel castings, AASHTO M 105, Class 30 for gray iron castings or AASHTO M 183 (ASTM A 283, Grade B or better) for structural steel.
B. 
Drain inlet alignment shall be straight in both horizontal and vertical alignment unless specific approval of a curvilinear drain is obtained, in writing, from the Board, after consultation with the Municipal Engineer.
C. 
Manholes shall be provided at all changes in vertical or horizontal alignment and at all junctions. On straight runs, manholes shall be placed at a maximum of four-hundred-foot intervals.
D. 
Upon completion, each catch basin or manhole shall be cleaned of all accumulation of silt, debris or foreign matter and shall be kept clean until final acceptance.
A. 
Erosion control. The procedures outlined in the erosion and sedimentation control plan shall be implemented during the site preparation, construction and cleanup stages.
B. 
Cleanup. Following street construction, the developer or contractor shall conduct a thorough cleanup of stumps and other debris from the entire street right-of-way. If on-site disposal of the stumps and debris is proposed, the site shall be indicated on the plan and be suitably covered with fill and topsoil, limed, fertilized and seeded.
C. 
Street names, signs and lighting. Streets which join and are in alignment with streets of abutting or neighboring properties shall bear the same name. Names of new streets shall not duplicate, nor bear phonetic resemblance to the names of existing streets within the municipality and shall be subject to the approval of the Board.[1] No street name shall be the common given name of a person. The developer shall reimburse the municipality for the costs of installing street name, traffic safety and control signs. Streetlighting shall be installed as approved by the Board.
[1]
Editor's Note: See Ch. 61, Property, Numbering of, § 61-4, Naming system.
Upon completion of street construction and prior to a vote by the municipal officers to submit a proposed public way to the legislative body, a written certification signed by a professional engineer registered in the State of Maine shall be submitted to the municipal officers at the expense of the applicant, certifying that the proposed way meets or exceeds the design and construction requirements of these regulations. As-built plans shall be submitted to the municipal officers.