What general characteristics denote an accessible trail?
Firm and stable surface: typically concrete, asphalt or stonedust
Maximum Running Slope and Segment Length
Running Slope of Trail Segment
Maximum Length of Segment
Steeper Than
But Not Steeper Than
1:20 (5%)
1:12 (8.33%)
200 feet
1:12 (8.33%)
1:10 (10%)
30 feet
1:10 (10%)
1:8 (12%)
10 feet
Cross Slope [1017.7.2] Cross slope is the side-to-side slope of a trail tread. Some cross slope is necessary to provide drainage and to keep water from ponding and damaging the trail surface, especially on unpaved or natural surfaces. When the trail surface is constructed of concrete, asphalt or boards, the cross slope must be no steeper than 1:48 (two percent). When the trail surface is constructed of materials other than asphalt, concrete or boards, cross slopes no steeper than 1:20 (five percent) are allowed when necessary for drainage.
