§ 3.3. Streets.

1.

Streets to be public. All streets in the Town of Irmo shall be public dedicated streets.

2.

System design and improvements. Reference requirements of the town stormwater management ordinance, chapter 4, "Road Design."

(a)

Layout and alignment.

1.

Proposed streets shall be coordinated with the street system in the surrounding area and where possible shall provide for the continuation of existing streets abutting the development.

2.

All streets shall be opened to the exterior property lines of the development unless permanently terminated by a vehicular turnaround or an intersection with another street.

3.

Reserve strips controlling access to streets are prohibited except where their control is placed with the town under conditions approved by the planning commission.

4.

No half streets shall be permitted.

(b)

Alleys.

1.

Alleys are not permitted in residential subdivisions.

2.

Paved alleys are permitted in commercial and industrial developments to provide service access, off-street loading and unloading, and parking consistent with and adequate for the uses proposed.

(c)

Cul-de-sacs.

1.

Dead-end streets designed to be permanently closed at one end shall not exceed 1,000 feet in length measured from the right-of-way of the intersecting street to the centerpoint of the turnaround.

2.

Turnarounds shall be provided at the closed end of a street.

The developer may choose from one of the alternatives illustrated below, or a modification thereof, approved by the review officer.

Alternative Cul-De-Sac Design

3.

Temporary dead-end streets, which extend for a greater distance than the depth of one abutting lot, shall be provided with a temporary turnaround conforming to the illustration in this section.

Turnarounds

(d)

Intersections.

1.

No more than two streets shall intersect at any one point.

2.

All streets shall intersect as nearly as possible at 90-degree right angles.

3.

Streets entering upon opposite sides of a given street shall have their centerlines directly opposite or shall be offset a minimum distance of 150 feet for minor streets and 400 feet for major streets, measured along the centerline of the streets being intersected.

4.

Street intersections shall be located at least 150 feet from the right-of-way of any railroad track, measured from the centerpoint of the intersection to the railroad right-of-way line nearest the intersection.

5.

Private driveways shall not intersect a public street within 40 feet of an intersection, measured from the street right-of-way.

Intersections

(e)

Right-of-way, lane, and pavement widths. Minimum street right-of-way, lane, and pavement widths shall be as follows:

Classification		Pavement Width	Right-of-Way Width
Minor Street			50 feet
	with barrier curb	25 feet	50 feet
	with roll curb	25 feet	50 feet
	with valley gutter	28 feet	50 feet
Major Street			66 feet
	with barrier curb	27 feet	66 feet
	with roll curb	36 feet	66 feet
	with valley gutter	36 feet	66 feet
Alley		18 feet	22 feet

 

Right-of-Way Widths

(Ord. No. 07-39, 2-5-2008)

Cross reference

Streets and sidewalks, ch. 28.