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- W645702899 abstract "This report discusses instrumentation and load testing of Route 82 over Sprout Creek (BIN 1032290) in Dutchess County, Region 8. The bridge is a simple span steel structure made of stringers, floor beams, and two through girders. It is about 85-ft long, 30-ft wide, and has a 30-degree skew. The bridge was built in 1934 with a concrete deck that was much lighter than the current deck. Over the years, lack of proper maintenance and leakage of salt water through the deck had led to serious corrosion and section loss at various locations on the bridge steel members. Level 1 rating analysis was conducted by the Region engineers to assess integrity of the bridge and evaluate its ability to carry normal traffic. Based on this analysis and the Department’s load posting policies, the bridge was load posted at 18 tons. The motive for the load testing was to investigate whether the bridge rating could be improved and its current load posting lifted. The bridge structure was instrumented with strain gages and load tested using 4, 2-axle trucks of known weights and configurations. The testing revealed that the bridge members were much stronger in flexure than what the Level 1 analysis showed. The floor beams drew their additional strength from the composite action with the concrete deck, as the top flanges were built embedded in the deck, and the girders were stronger because of the contribution of the deep deck to their flexural strengths. Load rating analysis of the bridge was performed twice in the report, once using the test results and then assuming as-designed conditions. Rating recommendations for the bridge members were made using as-designed ratings as thresholds. The rating analysis was conducted using American Association of State Highway and Transportation Officials (AASHTO) working stress method and an H-20 rating truck." @default.
- W645702899 created "2016-06-24" @default.
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- W645702899 date "2006-02-01" @default.
- W645702899 modified "2023-09-27" @default.
- W645702899 title "Load Testing for Bridge Rating: Route 82 Over Sprout Creek" @default.
- W645702899 hasPublicationYear "2006" @default.
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