Section 13.8 says that a pedestrian railing has to be a minimum of 42" tall. If you have a traffic rail that separates the sidewalk from the traffic lanes (as opposed to a 8" barrier curb) does the traffic rail between the sidewalk and the lanes need to be 42" tall as well? Would the traffic rail between the traffic lanes and the sidewalk be considered a pedestrian railing even though it is a traffic rated barrier? I can't find anything in the AASHTO bridge code that specifically states the minimum height required. However the commentary on section 13.4 does seem to indicate that it needs to meet the minimum height for pedestrian railings. But the commentary isn't the code...
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