When a have a sidewalk at the edge
When a have a sidewalk at the edge
(OP)
When a have a sidewalk at the edge of a bridge at what grade difference we need follow AASHTO Section 13.8 for pedestrian rail?, is it 2',3' or more than 4', where can I find this?






RE: When a have a sidewalk at the edge
The ADA doesn't cover railings other than on ramps and stairways. I'm not familiar with it, but apparently the International Building Code requires a barrier for vertical drop-offs of 30" or more. Link
Personally, I think that is too high for a sidewalk. If the drop-off is high enough to cause an injury, some sort of edge protection should be provided. Iowa DOT (see the link above) recommends railings for slopes exceeding 1 on 2 next to a sidewalk. I'd extend the rail to a point where you can provide a slope flatter than 1 on 2.
This is assuming that the vehicle barrier is between the roadway and sidewalk, since a vertical drop-off would require one.
RE: When a have a sidewalk at the edge
RE: When a have a sidewalk at the edge