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 STRUCTURAL
Bridges and Trestles-Continued
n Drainage Channels:
erosion
scouring
accumulations of driftwood and debris above, below, and at
structure
evidence of possible course diversion resulting from obstructions,
erosion, or other
vegetation
n Concrete Foundation:
cracks, scaling
exposed reinforcing
wood piling and pads
missing
broken
ineffective bearing
decay
termite and other pest infestation
all foundations
scouring
undermining
settlement
n Abutments and Piers:
cracks
breaks
scaling
spalling
open joints
other damage
evidence of damage from impact and vibration
5-10
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