A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
This is a continuation of the 2004 project to use historical cost data from a variety of geographically distributed bridges of different structural designs to (a) formulate a cost model for bridge life cycle cost, (b) assess the impact of deferred maintenance on bridge total life cycle cost, and (c) develop a supporting rationale for projecting the useful life of a bridge. The results of this work will provide critically needed supplemental input information for PONTIS and Bridge Life Cycle Cost Analysis (BLCCA), which both rely heavily on expert elicitation and engineering judgment, such as the cost and timing for various maintenance, repair, and rehabilitation actions, the probability of a condition changing from one status to another, the total life cycle cost, and the achievable useful life for bridge deck, superstructure, substructure, and bridge as a whole. In the first twelve months, historical cost information for 21 Chicago movable bridges, 26 different types of bridges in California, and 4 bridges and 2 tunnels administered by the Port Authority of New York and New Jersey have been collected; the initial cost, MRR (maintenance, repair, and rehabilitation) costs, and the total life cycle costs for all of these structures have been determined; the selection of an appropriate cost index has been rationalized; most factors which may impact the total life cycle costs for the Chicago bridges have been analyzed; the distribution of annual maintenance cost for the Chicago bridges has been determined; the impact of delayed MRR actions on the total life cycle cost was also captured for two Chicago bridges; and a preliminary life cycle cost comparison has been conducted for 4 bridges and 2 tunnels of the Port Authority of New York and New Jersey.
This is a continuation of the 2004 project to use historical cost data from a variety of geographically distributed bridges of different structural designs to (a) formulate a cost model for bridge life cycle cost, (b) assess the impact of deferred maintenance on bridge total life cycle cost, and (c) develop a supporting rationale for projecting the useful life of a bridge. The results of this work will provide critically needed supplemental input information for PONTIS and Bridge Life Cycle Cost Analysis (BLCCA), which both rely heavily on expert elicitation and engineering judgment, such as the cost and timing for various maintenance, repair, and rehabilitation actions, the probability of a condition changing from one status to another, the total life cycle cost, and the achievable useful life for bridge deck, superstructure, substructure, and bridge as a whole. In the first twelve months, historical cost information for 21 Chicago movable bridges, 26 different types of bridges in California, and 4 bridges and 2 tunnels administered by the Port Authority of New York and New Jersey have been collected; the initial cost, MRR (maintenance, repair, and rehabilitation) costs, and the total life cycle costs for all of these structures have been determined; the selection of an appropriate cost index has been rationalized; most factors which may impact the total life cycle costs for the Chicago bridges have been analyzed; the distribution of annual maintenance cost for the Chicago bridges has been determined; the impact of delayed MRR actions on the total life cycle cost was also captured for two Chicago bridges; and a preliminary life cycle cost comparison has been conducted for 4 bridges and 2 tunnels of the Port Authority of New York and New Jersey.
Life Cycle Cost of Bridges
R. Krizek (author)
2009
18 pages
Report
No indication
English
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