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Note: This document or portion of document references a state or local code that is stricter than the 2010 ADA Standards requires.

11B-406.6 Islands.

Raised islands in crossings shall be cut through level with the street or have curb ramps at both sides. The clear width of the accessible route at islands shall be 60 inches (1524 mm) wide minimum. Where curb ramps are provided, they shall comply with Section 11B-406. Landings complying with Section 11B-406.5.3 and the accessible route shall be permitted to overlap.  Islands shall have detectable warnings complying with Section 11B-705.

[2010 ADA Standards] 406.7 Islands. Raised islands in crossings shall be cut through level with the street or have curb ramps at both sides. Each curb ramp shall have a level area 48 inches (1220 mm) long minimum by 36 inches (915 mm) wide minimum at the top of the curb ramp in the part of the island intersected by the crossings. Each 48 inch (1220 mm) minimum by 36 inch (915 mm) minimum area shall be oriented so that the 48 inch (1220 mm) minimum length is in the direction of the running slope of the curb ramp it serves. The 48 inch (1220 mm) minimum by 36 inch (915 mm) minimum areas and the accessible route shall be permitted to overlap.

Figure (a) is a plan view of a raised pedestrian island with a walkway cut through at the same level as the street crossing.

(a) cut through at island

Figure (b) is a plan view of a raised pedestrian island between two traffic lanes. Aligned curb ramps with side flares slope down on each side. The level space between the top of both ramps is 48 inches long minimum. The width of both ramp runs is 36 inches.

(b) curb ramp at island

FIGURE 11B-406.6 ISLANDS IN CROSSINGS ‡‡

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