Poles on Bridges
Light poles on bridges are typically mounted on
concrete brackets along the outside edges of the bridge behind the
traffic rail. The BL standard sheet contains electrical and structural
details for installing lighting on bridges. Light pole locations
on bridges should be shown on the bridge plan sheets as well as
on the lighting sheets to help ensure the brackets are constructed
along with the bridge slab.
The BL standard recommends structural locations
for poles placed on bridges. To reduce pole vibration, the pole
should be placed within an eighth of a bridge span distance from
the bent. The pole should also be placed at least 4 feet from the
center of any bent and at least 3 feet from any deck drain. These
factors should be considered along with illumination levels when
laying out pole locations.