Walks on Bridges. Walks should be provided on bridges located in urban or suburban
areas having curbed sections under two conditions: (1) where there are existing walks
on the bridge and/or bridge approaches, or (2) where evidence can be shown through
local planning processes, or similar justification, that walks will be required in the
near future (5 to 10 years). Anticipated pedestrian volumes of 50 per day justify a
walk on one side, and 100 per day justify walks on both sides. Walks on bridges
should preferably be 6 ft (1.8 m) wide in residential areas and 8 ft (2.4 m) wide in
commercial areas measured from the face of curb to face of parapet. Widths, however,
may be as much as 12 ft (3.7 m) in downtown areas. The minimum bridge walk width
is 5 ft (1.5 m).