Prolonging the Lifetime of Old Steel and Steel–Concrete Bridges

Assessment Procedures and Retrofitting Interventions

Document identifier:
Access full text here:10.1080/10168664.2019.1660602
Keyword: Engineering and Technology, Composite bridges, Byggkonstruktion, Retrofitting, Assessment, Inspection, Existing bridges, Multi-criteria decision analysis, Steel bridges, Civil Engineering, Annan samhällsbyggnadsteknik, Other Civil Engineering, Infrastrukturteknik, Samhällsbyggnadsteknik, Teknik och teknologier, Infrastructure Engineering, Structural Engineering
Publication year: 2019
Relevant Sustainable Development Goals (SDGs):
SDG 11 Sustainable cities and communitiesSDG 3 Good health and wellbeing
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The structural analysis of existing bridges is not widely covered by the various codes and standards, resulting in the insecure and, in some cases, critical condition of this type of structure. Regarding national regulation, few states include compulsory codes that define the methods and procedures of inspection, assessment, maintenance and retrofitting of bridges. Although an accurate retrofitting procedure can prolong the life of an existing bridge, the more accurate management of national infrastructure assets can result in financial savings in the long term. This article deals with: (a) the assessment step-level procedure, (b) suggestions for bridge load tests and bridge categories, (c) bridge material analysis, (d) structural testing analysis, and (e) the main retrofitting interventions to prolong the life of existing steel and steel composite bridges. Furthermore, a representative case study is analysed and discussed, including examples of the retrofitting solutions implemented to prolong the service life of the bridge.


Alessio Pipinato

AP& P srl, Rovigo, Italy
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Peter Collin

Luleå tekniska universitet; Byggkonstruktion och brand
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Robert Hällmark

Luleå tekniska universitet; Byggkonstruktion och brand
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