New Jersey Administrative Code
Title 16 - TRANSPORTATION
Chapter 47 - STATE HIGHWAY ACCESS MANAGEMENT CODE
Subchapter 3 - DESIGNATION OF LIMITED ACCESS
Section 16:47-3.9 - Curb

Universal Citation: NJ Admin Code 16:47-3.9

Current through Register Vol. 56, No. 24, December 18, 2024

(a) The Department may require curb construction along any frontage. A need for curb construction shall be noted as a condition of the permit. The Department is not responsible for maintaining curb.

(b) All curb to be constructed within State highway right-of-way shall be white concrete, Class "B", air-entrained, and shall conform to "Standard Specifications for Road and Bridge Construction" and Figure 3 following N.J.A.C. 16:47-3.8(o). White concrete is composed of white cement, white sand, and light-colored coarse aggregate. The Department may allow grey curb in an area where grey curb exists.

(c) Class "B" concrete shall be 3000 PSI (26 megapascals) mix.

(d) The alignment shall be as shown on the plans. The grade of the top of the curb shall parallel the grade of the highway and shall satisfy the height requirements listed in (d)1 and 2 below. The grade of the curbline at depressed curbs shall be 1 1/2 inches (40 millimeters) higher than the grade of the highway.

1. For highways with a design speed of 50 mph (80 kph) or greater, the curb size shall not exceed nine inch (225 millimeters) by 16 inch (400 millimeters), with a four-inch (100 millimeters) face; and

2. For highways with a design speed of less than 50 mph (80 kph), the curb size should desirably be nine inch (225 millimeters) by 16 inch (400 millimeters), with a four-inch (100 millimeters) face. Where there may be sidewalks, nine inch (225 millimeters) by 18 inch (450 millimeters), with a six-inch (150 millimeters) face, may be used.

(e) Expansion joints shall be provided in curb adjacent to joints in abutting concrete pavement and at approximately equal distances of not more than 20 feet (six meters), except as otherwise specified as a condition of a permit.

(f) The curb top shall be finished with a wood float to an even, smooth and dense surface and, as soon as the forms can be removed, the face shall be similarly finished. The edges of the curb shall be rounded to the required radius with suitable edging tools.

(g) Where curb exists or is to be constructed, all driveways are to have depressed curbs, constructed in accordance with Figure 4 below.

1. To construct a depressed curb when curbing exists, the permittee will be required to entirely remove that section of existing curb to a joint and replace it with new curb.

2. Depressed curbs will not be provided on new highway construction unless the improvement of the abutting lot is in progress or is contemplated in the immediate future, in which case the lot owner must first obtain an access permit.

3. The top of the depressed section of curb shall be 1 1/2 inches (40 millimeters) higher than and parallel to the established curbline grade.

4. Depressed curb shall not be constructed as an integral part of concrete ramps or aprons.

5. Existing monolithic curb shall be chiseled off to a line 1 1/2 inches (40 millimeters) above curbline grade after which the broken surface shall be finished with a 1:2 Portland cement mortar mixture to present a smooth and even surface.

(h) The approach ends shall have a 10 foot (three meter) transition, from a two inch (50 millimeter) face to the appropriate four or six inch (100 or 150 millimeter) face, as shown on the following Figure 5 below. The approach ends of curbed islands shall also have 10 foot (three meter) transitions, from a two inch (50 millimeter) face to the appropriate four or six inch (100 or 150 millimeter) face, as shown on Figure 4 below. All transitions shall have joints at the four or six inch (100 or 150 millimeter) face end.

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