Page 263 - Challenges in Corrosion Costs Causes Consequences and Control(2015)
P. 263
CORROSION CONTROL OF BRIDGES 241
Figure 4.4 Severe corrosion resulting in deficient bridges (6).
value of the cost at 5% annual percentage rate, assuming annual payments for the
replacement cost, that is, the annual cost to replace structurally deficient bridges (both
steel and reinforced concrete) over next 10 years is 3.79 billion/year. This cost is for
the current number of deficient bridges. The total cost may be greater than the value
given here.
There are 543,019 concrete and steel bridges of which 78,448 are structurally defi-
cient, leaving 464,571 bridges to be maintained for estimating purposes; it is assumed
that all these bridges have a conventionally reinforced concrete deck. The annualized
life-cycle direct cost of original construction, routine maintenance, patching and reha-
bilitation for a black steel rebar deck costs between $18,000 and $22,000. These costs
are both corrosion- and non-corrosion related.
The cost of a corrosion-free scenario used the same as the scenario of a bridge
deck with corrosion with the assumptions:
