00795324

Component

The Alabama Department of Transportation (ALDOT) has over 3 miles of major interstate bridges (3 to 5 lanes wide with approximately 600,000 cu ft of deck) near downtown Birmingham with significant levels of deck cracking and deterioration. The bridges are part of the 165 and 159/20 interstate highway system through the city and are approximately 30 years old. Typical photographs showing the state of cracking and deterioration of the bridges are included in this report. ALDOT bridge inspectors indicate that about 5-7 years ago they began to see longitudinal cracks in the top of the deck above the edges of the support girders. These cracks are continuing to grow in length and width, and are beginning to combine with the older transverse cracks (which are almost everywhere) to form surface spalls. Obviously, the ALDOT must make decisions on rehabilitation actions for the Birmingham decks in the near future. The research described in this report is part of ALDOT's investigative work on the Birmingham bridge deck problem.

Session D

English

16p

2000

Ninth AASHTO/TRB Maintenance Management Conference

Figures (6) ; Photos (12) ; Tables (1)

Bridge decks; Cracking; Decision making; Deterioration; Interstate highways; Longitudinal cracking; Photographs; Rehabilitation; Research; Traffic volume; Transverse cracking; Urban areas

Birmingham (Alabama)

Bridges and other structures; Design; Highways; Maintenance and Preservation; Research; I24: Design of Bridges and Retaining Walls; I61: Equipment and Maintenance Methods

TRIS, TRB

Jul 18 2000 12:00AM

• EVALUATION OF A PENETRATING CORROSION INHIBITOR SYSTEM
• EXTENDED CORROSION PERFORMANCE OF AN IMPREGNATION-TREATED CONCRETE BRIDGE DECK