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Integration of life-cycle cost analysis with bridge management systems: case study of the Swedish bridge and tunnel management system.
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Structural Engineering and Bridges.ORCID iD: 0000-0002-5447-2068
2012 (English)In: Transportation Research Record, ISSN 0361-1981, no 2292, 125-133 p.Article in journal (Refereed) Published
Abstract [en]

Many countries use bridge management systems (BMSs), and many of these systems involve some form of life-cycle cost (LCC) analysis. Use of LCC analysis in bridge engineering is rare, however; the technique has been applied primarily in the operation phase to support decisions about bridges that already exist. Yet LCC analysis can be applied across the life of a bridge. This paper introduces the Swedish Bridge and Tunnel Management System (BaTMan). A comprehensive, integrated LCC implementation scheme takes into account the bridge investment and management processes in Sweden. The basic economic analytical tools as well as other helpful LCC analysis techniques are described. A case study demonstrates improvements in BaTMan as a factor in the decision whether to repair or to replace a bridge. Cost records for 1,987 bridges were used as input data in the case study. On the basis of the same records, the average real and anticipated initial costs of various bridge types in Sweden are presented schematically.

Place, publisher, year, edition, pages
2012. no 2292, 125-133 p.
Keyword [en]
Analysis techniques, Analytical tool, Bridge engineering, Bridge management system, Bridge-type, Implementation scheme, Initial costs, Input datas, Life-cycle cost analysis, Lifecycle costs, Management process, Management systems, Operation phase
National Category
Other Civil Engineering Civil Engineering
URN: urn:nbn:se:kth:diva-115442DOI: 10.3141/2292-15ISI: 000313316700015ScopusID: 2-s2.0-84871579536OAI: diva2:588866

QC 20150630

Available from: 2013-01-16 Created: 2013-01-15 Last updated: 2015-06-30Bibliographically approved
In thesis
1. Life-Cycle Costing: Applications and Implementations in Bridge Investment and Management
Open this publication in new window or tab >>Life-Cycle Costing: Applications and Implementations in Bridge Investment and Management
2013 (English)Doctoral thesis, comprehensive summary (Other academic)
Alternative title[en]
Sustainable and cost-efficient procurement and management of bridge infrastructure
Abstract [en]

A well-maintained bridge infrastructure is a fundamental necessity for a modern society that provides great value, but ensuring that it meets all the requirements sustainably and cost-effectively is challenging. Bridge investment and management decisions generally involve selection from multiple alternatives. All of the options may meet the functional demands, but their life-cycle cost (LCC), service life-span, user-cost, aesthetic merit and environmental impact may differ substantially. Thus, life-cycle analysis (LCCA, a widely used decision-support technique that enables comparison of the LCC of possible options), is essential. However, although LCCA has recognized potential for rationalizing bridge procurement and management decisions its use in this context is far from systematic and the integration of LCCA findings in decisions is often far from robust. Thus, the overall objective of the work underlying this thesis has been to contribute to the development of sustainable bridge infrastructures while optimizing use of taxpayers’ money, by robustly incorporating life-cycle considerations into bridge investment and management decision-making processes.

The work has introduced a full scheme for applying LCCA throughout bridges’ entire life-cycle. Several practical case studies have been presented to illustrate how an agency could benefit from use of a bridge management system (BMS) to support decisions related to the management of existing bridges and procure new bridges. Further developments include a comprehensive approach incorporating a novel LCCA technique, “LCC Added-Value Analysis”, which enables procurement of the most cost-efficient bridge design through a fair design-build (D-B) tendering process. A further contribution is a novel, holistic approach designed to enable procurement of bridges with the maximal possible sustainability (life-cycle advantages) under D-B contracts. The approach combines LCC Added-Value analysis with other techniques that make bridges’ aesthetic merit and environmental impact commensurable using an adapted concept named the willingness-to-pay-extra (WTPE).

The systematic analytical procedures and potential of LCCA to deliver major savings highlighted in this thesis clearly demonstrate both the feasibility and need to integrate LCCA into bridge procurement and management decisions. This need has been recognized by Trafikverket (the Swedish Transport Administration), which has implemented a software tool developed in the research (BaTMan-LCC) in its bridge and tunnel management system (BaTMan). This thesis introduces readers to the field, considers BaTMan and the bridge stock in Sweden, discusses the developments outlined above and obstacles hindering further implementation of LCCA, then presents proposals for further advances.

Place, publisher, year, edition, pages
KTH Royal Institute of Technology, 2013. x, 55 p.
Trita-BKN. Bulletin, ISSN 1103-4270 ; 121
Bridge, Cost, Life Cycle Cost Analysis, Procurement, Investment, Management
National Category
Civil Engineering Agricultural Sciences Environmental Engineering Natural Sciences
urn:nbn:se:kth:diva-133241 (URN)
Public defence
2013-11-13, Kollegiesalen, Brinellvägen 8, Kungliga Tekniska Högskolan, Stockholm, 13:00 (English)

QC 20131029

Available from: 2013-10-29 Created: 2013-10-29 Last updated: 2013-10-30Bibliographically approved

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