BRIDGE DECK DETERIORATION: A REVIEW OF NEW YORK'S EXPERIENCE

This report summarizes New York's experience with deterioration (surface spalling and delamination) of monolithic bridge decks constructed with unprotected steel reinforcement, and speculates on how available information might be sued in predicting future maintenance needs. Deterioration was found to be strongly influenced by depth of concrete cover over the steel, and although actual cover is variable, decks designed with deeper cover are performing better at all ages. Data that can be used to predict the percentage of spans likely to have various amounts of spalled surface area after 2 and 5 years--based on a knowledge of design cover and current condition--are summarized. It is also noted that knowledge of actual cover-depth distribution and age may be useful in determining specific spans likely to spall soon, and thus which spans might benefit from preventive maintenance. (FHWA)

Supplemental Notes:
- Prepared in cooperation with the Department of Transportation, Federal Highway Administration. Study Title: Peformance of Monolithic Bridge Decks.
Corporate Authors:
New York State Department of Transportation

Engineering Research and Development Bureau, 1220 Washington Avenue
Albany, NY United States 12232

Federal Highway Administration

Engineering Research and Development Bureau, 1200 New Jersey Avenue, SE
Washington, DC United States 20590
Authors:
- Leslie, W G
Publication Date: 1980-5

Media Info

Pagination: 25 p.

Subject/Index Terms

TRT Terms: Age; Bridge decks; Concrete; Delamination; Deterioration; Reinforcement (Engineering); Spalling
Uncontrolled Terms: Cover depth
Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

Accession Number: 00319117
Record Type: Publication
Source Agency: National Technical Information Service
Report/Paper Numbers: FHWA-NY-RR 78,, FCP 44B1-464,, Final Report
Files: TRIS, USDOT, STATEDOT
Created Date: Nov 19 2003 12:00AM