An Integrated Life Cycle Assessment and Life Cycle Cost Analysis Model for Concrete Bridge Deck Applications

CSS Publication Number: 
CSS08-14
Abstract: 

An integrated life-cycle assessment and life-cycle cost analysis model was developed and applied to enhance the sustainability of concrete bridge infrastructure. The objective of this model is to compare alternative bridge deck designs from a sustainability perspective that accounts for total life-cycle costs including agency, user, and environmental costs. A conventional concrete bridge deck and an alternative engineered cementitious composite link slab design are examined. Despite higher initial costs and greater materialrelated environmental impacts on a per mass basis, the link slab design results in lower life-cycle costs and reduced environmental impacts when evaluated over the entire life cycle. Traffic delay caused by construction comprises 91% of total costs for both designs. Costs to the funding agency comprise less than 3% of total costs, and environmental costs are less than 0.5%. These results show life-cycle modeling is an important decision-making tool since initial costs and agency costs are not illustrative of total life-cycle costs. Additionally, accounting for construction-related traffic delay is vital to assessing the total economic cost and environmental impact of infrastructure design decisions.

Keyword: 
Life cycles
Environmental issues
Bridge design
Fiber reinforced materials
Concrete pavements
Traffic delay
Construction costs
Publication Type: 
Journal Article
Journal Infrastructure Systems
Date Published: 
September 2008
Persistent URL: 
DOI: 10.1061/(ASCE)1076-0342(2008)14:3(214)
Full Citation: 
Kendall, Alissa, Gregory A. Keoleian and Gloria E. Helfand. 2008. An Integrated Life Cycle Assessment and Life Cycle Cost Analysis Model for Concrete Bridge Deck Applications. Journal Infrastructure Systems 14(3): 214-222.
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