Comparative Analysis of Bridge Superstructure Deterioration
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VIEW THE REPLYPublication: Journal of Structural Engineering
Volume 120, Issue 7
Abstract
This paper presents the results of a study of rates of deterioration of steel and prestressed concrete bridge superstructures. The study involved forming sample groups of bridges that were homogeneous in terms of characteristics, other than superstructure material, which were expected to influence rates of deterioration. Superstructure condition rating was regressed against age and average daily traffic for sample groups of homogeneous steel and prestressed concrete bridges in the nation as a whole, as well as in seven states selected to represent diverse terrains and environments. Results indicated that age is the primary determinant of superstructure deterioration, followed by average daily traffic. Choice of structural material does not significantly affect superstructure deterioration rates. The study also found that deterioration of bridge superstructures takes the form of a convex function over time, with the rate of observed deterioration slowing as a bridge ages.
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Information
Published In
Journal of Structural Engineering
Volume 120 • Issue 7 • July 1994
Pages: 2123 - 2136
Copyright
Copyright © 1994 American Society of Civil Engineers.
History
Received: May 19, 1993
Published online: Jul 1, 1994
Published in print: Jul 1994
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