Life Cycle Cost Model for Steel Bridge Corrosion Prevention
corrosion of steel bridges is a long-term proposition. The consequences a
particular strategy will have on future generations is often given less weight
than the near-term consequences (e.g., project cost, impact on the travelling
a credible, useful, dynamic life cycle cost model that can be used by all
levels of a public transportation agency to make informed decisions regarding
corrosion prevention of steel bridges.
End-users may include policy makers, planners, designers, and
There are five primary benefits of this
life-cycle planning, risk management, and financial planning for steel bridges.
development, implementation, and improvements to agency asset management plans
for improving and preserving steel bridges.
the appropriate corrosion prevention technology to be selected for a given
realistic projection of maintenance needs, creating a basis for policy-makers
to plan for or even mandate future maintenance expenditures over the life-cycle
of the structure.
The savings in
maintenance, repair, and replacement costs could approach $1 billion per year
if the annual cost of bridge corrosion was reduced by just 10%.
number of life-cycle cost models and analyses are available (e.g., FHWA
RealCost). However, these models rely on
the user to make assumptions about corrosion performance. A universal, comprehensive, and credible set
of corrosion assumptions and criteria have not been developed to inform these
The proposed work should include the following
Literature Review should identify and catalog the life-cycle cost, service life
prediction, maintenance strategy, and other related models. Each identified model should be evaluated and
catalogued. (2-3 months)
Agency Survey should be conducted to identify the critical factors which should
be included in the life cycle cost model. (2-3 months)
Model Development plan should be created that incorporates an iterative process
of development and testing ensuring the widest possible applicability/acceptance.
The model should be developed, tested, and
validated in accordance with the project plan. (16-24 months)
of the LCCA model will require validation and institutionalization. The model
should be validated by one or more agencies through demonstration cases. The model can be institutionalized by working
with trade associations such as National Steel Bridge Alliance, The Society for
Protective Coatings, or NACE International. The model may also inform the
current AASHTOWare products.
Provides a basis for long-term decision-making which will more effectively allocate resources to design, construct, and maintain steel bridges
|Sponsoring Committee:||AFF20, Steel Bridges
|Research Period:||24 - 36 months|
|RNS Developer:||J. Peter Ault, P.E.|
|Source Info:||NCHRP Synthesis 48-03|
|Index Terms:||Life cycle costing, Steel bridges, Corrosion protection, |
Maintenance and Preservation
Bridges and other structures