01473170

Component

https://doi.org/10.3141/2360-01

http://scholar.google.com...ield&publication_year=2013

The median age of bridges in the National Bridge Inventory is about 44 years. Many bridges built to design codes that are older and less demanding than current codes will be required to exceed their original design lives. Therefore, state highway agencies will need to expend more resources to prevent deterioration of their bridges, and the most efficient ways of assessing and maintaining the stock of bridges must be found. In addition, new bridges must be designed for durability, and key components must be accessible and capable of being maintained. This paper discusses various deterioration mechanisms, such as fatigue, impacts, scour, concrete deterioration, and corrosion, that can affect current highway bridges; issues concerning durability, maintainability, assessment, and monitoring of bridges; rehabilitation of bridges; and design of new bridges. The training of new engineers and the provision of expertise and allocation of resources by state highway agencies are also discussed. A holistic approach to transportation infrastructure maintenance is viewed as ensuring that all relevant expertise and experience are available to contribute to the design, construction, maintenance, and rehabilitation of new and existing bridges.

01500226

13-0001

English

pp 5–10

2013

Transportation Research Record: Journal of the Transportation Research Board

9780309286862

Print

Figures (2) ; Photos; References (20)

Bridge design; Corrosion; Deterioration; Fatigue (Mechanics); Highway bridges; Maintenance; Rehabilitation; Scour; Service life

National Bridge Inventory

Bridges and other structures; Design; Highways; Maintenance and Preservation; I24: Design of Bridges and Retaining Walls; I60: Maintenance

TRIS, TRB, ATRI

Feb 5 2013 12:10PM

• Defining Bridge Preservation by Action Type
• Development of Bridge Management Components That Facilitate Decision Making
• Fatigue Testing and Structural Health Monitoring of Retrofitted Web Stiffeners on Steel Highway Bridges
• Guidelines for Thermographic Inspection of Concrete Bridge Components in Shaded Conditions
• Modeling Hurricane Hazards and Damage on Florida Bridges
• Modeling the Risk of Advanced Deterioration in Bridge Management Systems
• Performance Measures for Bridge Preservation
• Test Method to Assess Bonding Characteristics of Membrane Layers in Wearing Course on Orthotropic Steel Bridge Decks
• Vulnerability Assessment of Bridges Exposed to Scour