01340017

Component

A technique for computing deterioration curves for use in economic analyses of repair/replacement strategies for bridge elements is developed in this paper. The technique was applied to bridge decks with low slump concrete overlays placed between 1974 and 1981. Over twenty years of data from the National Bridge Inventory was used as the basis for the deterioration curves. The deterioration curves were assumed dependent on several variables. Potential key material and geometric variables were identified through a literature review, and the individual impact of these parameters on deterioration rates was examined using statistical methods. Variables determined to have a significant impact on the deterioration rates of these decks included: span length, average daily traffic, and superstructure material type. Based on the results of the statistical analysis, the bridge population data was then subdivided into groups with similar deterioration characteristics. Lastly, piecewise linear deterioration curves were constructed for the various subgroups.

01329018

11-3444

English

15p

2011

Transportation Research Board 90th Annual Meeting

DVD

Figures (5) ; References (15) ; Tables (4)

Average daily traffic; Bridge decks; Bridge management systems; Bridge superstructures; Deterioration; Economic analysis; Long span bridges; Maintenance

National Bridge Inventory

Bridge replacement projects

Bridges and other structures; Highways; Maintenance and Preservation; I61: Equipment and Maintenance Methods

Transportation Research Board Annual Meeting 2011 Paper #11-3444

TRIS, TRB

Feb 17 2011 6:31PM