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      SUSTAINABILITY ISSUES OF FUNCTIONALLY OBSOLETE BRIDGES

      research-article
      1
      Journal of Green Building
      College Publishing
      bridges, management, sustainability

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          Abstract

          Interest in long-term durability and sustainability of bridges has challenged the development of modern bridge management. The structural condition and performance of bridges have drawn much economic and engineering attention. In comparison, the effective functionality of bridges is another major sustainability concern, affecting their safety, mobility, and life span. To reach cost-effective planning and systematic management, consideration of functionally obsolete bridges is essential. This article discusses the critical aspects of evaluation, traffic mobility, and congestion cost of functionally obsolete bridges. A methodology was developed for bridge functional obsolescence evaluation. Actual bridge inventory and conditions databases were studied to compile practical data that generates focused insight for decision-making. A forecast was developed to predict the number of functionally obsolete bridges in the future. Practical cost components of traffic congestion were discussed to facilitate consideration of better original design and construction versus reassignment design and work. The resulting study is practical for transportation agencies, officials, and researchers to support sustainable bridges by planning financial resources, management policies and strategies, design methods, and implementation practices.

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          Most cited references8

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          Condition Assessment for Bridge Management

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            Bridge Instrumentation and Monitoring for Structural Diagnostics

            Diagnostic instrumentation and monitoring of bridges are essential for reliable structural condition assessment and performance evaluation. This management step applies particularly to structurally deficient bridges that cannot be accurately evaluated by inspection and/or analysis alone. Reliable evaluation is an economic and engineering requirement before any decision-making for preventive action. Thus, field diagnostic capabilities are indispensable tools to enable evaluation and support field-calibrated modeling, analysis, identification, and load rating. The reliability of structural evaluation for objective bridge management is determined by the dependable performance of all the system components. Although instrumentation and monitoring procedures appear to be well established, some misconceptions still keep recurring critically in practice. To improve the state-of-practice of structural diagnostics, available field systems and methods need re-evaluation of their instrumentation and monitoring performance under real-world conditions. Subsequently, dedicated field capabilities can be formulated and developed to have advanced and practical characteristics. This article discusses various less-emphasized critical aspects of multidisciplinary research experience on bridge structural health monitoring, to explore dependable evaluation methods, compile practical data on actual bridge monitoring for immediate implementation, and generate focused insight for the development of advanced, reliable, and practical research methods in the future. To reach a systematic conceptualization for a better methodology, various diagnostic components are criticized. The resulting discussions on the various bridge evaluation aspects are practical for transportation agencies, bridge officials, and researchers. The detailed aspects are intended to help select appropriate implementation practices in field applications of bridge instrumentation and monitoring. These help focus bridge management policies, re-orient evaluation strategies, and reconsider diagnostic methods.
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              “Our Nation’s Highways—2000,”

              (2000)
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                Author and article information

                Journal
                jgrb
                Journal of Green Building
                College Publishing
                1552-6100
                1943-4618
                1943-4618
                Spring 2006
                : 1
                : 2
                : 135-144
                Author notes

                1.Assistant Prof., Civil & Env. Eng. & Eng. Mech., Univ. of Dayton, Dayton, OH 45469-0243 Phone: 937-229-2987, Fax: 937-229-3491, E-mail: Daniel.Farhey@ 123456notes.udayton.edu .

                Article
                jgb.1.2.135
                10.3992/jgb.1.2.135
                72a042b0-6bdf-4cef-81b2-51bf058dfe5f
                ©2006 by College Publishing. All rights reserved.
                History
                Page count
                Pages: 10
                Categories
                RESEARCH ARTICLES

                Urban design & Planning,Civil engineering,Environmental management, Policy & Planning,Architecture,Environmental engineering
                bridges,management,sustainability

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