§ 17-81. Street standards.

(a)

The arrangement, character, extent, width, grade and location of all streets shall be considered in their relation to existing streets; to topographical conditions; to public convenience and safety; and in their appropriate relation to the proposed uses of land to be served by such streets. Prior to acceptance by the board of aldermen of any streets in a subdivision, the petitioner shall furnish proof and certification that the streets join an existing publicly maintained street. The petitioner shall furnish proof and certification that the owner of the private road or street has executed and recorded a written instrument allowing use by the public of such private road or street. If the streets in the proposed subdivision do not join a publicly maintained road or street, the recorded subdivision plat shall contain the following statement:

"Streets, servitudes and rights-of-way in the subdivision which do not join or connect with publicly maintained streets, roads, servitudes or rights-of-way shall "NOT" be maintained by the Town of St. Francisville or any other public body."

(b)

No street name or subdivision name shall be used which will duplicate or be confused with the names of existing streets or subdivisions. All street names and subdivision names must be approved by the Town of St. Francisville. Streets that are obviously in alignment with other already existing streets shall bear the names of the existing streets.

(c)

Street jogs with centerline offsets of less than one hundred twenty-five (125) feet shall be prohibited.

(d)

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 seventy-five (75) degrees.

(e)

All dead-end streets, roads, etc., must have a cul-de-sac or a T-turnaround.

(f)

No petitioner shall use an existing dead-end street, cul-de-sac or T-turnaround as access to a new development if the existing road was not specifically designated as future access to any development, unless approved by the board of aldermen.

(g)

All new streets (private or public) shall be paved and constructed in accordance with these regulations. The petitioner that constructs a private road shall be required to obtain a signed affidavit from all buyers located on the private road acknowledging it is a private road and not maintained by the town. A copy of the signed affidavit must be submitted to the Town of St. Francisville. A large note shall be placed on the final plat stating the following: BUYER BEWARE—THE STREETS, ROADS, SERVITUDES AND RIGHTS-OF-WAY IN THIS SUBDIVISION WILL NOT BE MAINTAINED BY THE TOWN OF ST. FRANCISVILLE OR ANY OTHER PUBLIC BODY."

(h)

A waiver for private, all-purpose servitudes may be obtained when a subdivision of four (4) lots or less (minor subdivision) is created as a subdivision that may be legally re-subdivided. A minimum of thirty-foot, all-purpose private servitude is required. This type of minor subdivision must be approved by the board of aldermen and cannot undergo future re-subdividing.

(i)

Design and construction criteria.

(1)

The riding surface of all public streets/roads where open ditches are used for drainage shall be a minimum of twenty (20) feet wide.

a.

With three-inch hot asphaltic concrete wearing surface (1.5-inch and 1.5-inch layers) on ten-inch soil cement base at least twenty-one (21) feet wide; or

b.

With three-inch hot asphaltic concrete wearing surface (1.5-inch and 1.5-inch layers) on compacted eight-inch crushed limestone base at least twenty-one (21) feet wide; or

c.

With six (6) inches of four thousand (4,000) psi concrete on eight-inch compacted base; or

d.

Same standards as c. above, but with five (5) inches of four thousand (4,000) psi concrete base and one and one-half (1½) inches of hot asphaltic concrete wearing surface.

e.

Crown of roadbed shall be a MINIMUM of thirty (30) feet wide.

f.

Road shoulders shall be a MINIMUM of five (5) feet wide and be fertilized and seeded to prevent erosion of shoulders and to prevent depositing of soil in road ditches.

g.

Roadside ditches shall be constructed with a roadside slope of three (3) to one (1) and a back slope of three (3) to one (1).

(2)

The area between the backside of the road ditch and the road right-of-way shall be graded to drain, fertilized and seeded as soon as possible to prevent erosion.

(3)

All streets with curb, gutter and/or enclosed drainage systems shall be at least twenty-seven (27) feet wide from back of curb or twenty (20) feet with subsurface drainage and no curbs.

a.

With three-inch hot asphaltic concrete wearing surface (1.5-inch and 1.5-inch layers) on ten-inch soil cement base; or

b.

With three-inch hot asphaltic concrete wearing surface (1.5-inch and 1.5-inch layers) on compacted eight-inch crushed limestone base; or

c.

With six (6) inches of four thousand (4,000) psi concrete on eight-inch compacted base; or

d.

With five (5) inches of four thousand (4,000) psi concrete and one and one-half (1½) inches of hot asphaltic concrete wearing surface on eight-inch compacted base.

(4)

The area between the backside of the curb and the road right-of-way shall be graded to drain, fertilized and seeded as soon as possible to prevent erosion.

(5)

Based upon the soil classification and strength test results, the licensed engineer shall design the typical street sections. If the licensed engineer recommends a soil-cement treated base or sub-base, or a lime modified base or sub-base, the minimum amount of lime and/or cement required shall also be shown on the typical section(s). The amount of lime and/or cement shall be indicated in pounds per square yards (lbs./s.y) for the base or sub-base thickness specified. For lime treated bases or sub-bases the type of lime shall also be specified (hydrated or quicklime).

(6)

All costs for the sampling and all required laboratory tests shall be borne by the petitioner.

(7)

Where boulevards are constructed, this is, two (2) lanes of traffic separated by a neutral ground, the paving on each lane shall be not less than twenty (20) feet in width with a center neutral ground of not less than fifteen (15) feet in width.

(8)

Culs-de-sac (turnarounds) at the end of dead-end streets shall have a minimum outside turning radius of fifty-five (55) feet, with a minimum inside turning radius of thirty-five (35) feet. Petitioner shall provide street right-of-way sufficient to accommodate the cul-de-sac described in the ordinance herein. Pavement width in the turnarounds shall have a minimum width of twenty (20) feet. The center of the cul-de-sac shall be graded in order to provide positive drainage. Once graded, this area is to be immediately fertilized and seeded to stabilize the soil and prevent erosion. Permanent T-turnarounds may be used for streets no greater than five hundred (500) feet in length. The T-turnaround shall have a minimum paved width of twenty (20) feet and a minimum paved length of eighty (80) feet. Sufficient right-of-way shall be dedicated to accommodate necessary drainage.

(9)

Profiles of all streets and ditches shall be submitted with the construction plans. Minimum gutter slope shall be 0.40 percent. Where open ditches are used for drainage, a drainage map showing size and grade of all pipe to be used under driveways and inverts of all ditches at property corners also shall be furnished.

(10)

All streets shall have a minimum of the following signs: street name, speed limit, stop, dead-end (if applicable).

(11)

When sidewalks are constructed in an approved subdivision, such sidewalks shall be at least four (4) inches thick and four (4) feet wide. All sidewalks shall be located in a five-foot servitude on each lot abutting all road/street rights-of-way.

(12)

Minimum longitudinal slope for street design shall be 0.40 percent.

(13)

Minimum of fifty (50) feet length vertical curve shall be required for all longitudinal slope breaks of 1.00 percent or greater.

(14)

Temporary T-turnarounds as approved by the town engineer and mayor shall be twenty (20) feet by eighty (80) feet and constructed of aggregate or crushed limestone six (6) inches thick.

(15)

Streets with sub-surface drainage and curb shall have maximum of eight (8) feet of lane flooding on ten-year storm.

(j)

The town engineer and/or building official shall be present for independent testing of the soil, base, concrete, and paving surface.

(Ord. No. 2015-5, § 5.1, 11-10-15)