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Field Evaluation of the Performance of Three Concrete Bridge Decks on Montana Route 243 - UTC

Started: February, 2002 Ended: May, 2005 Project ID #426443 Status: Completed


The objective of this project is to investigate the performance of three different types of concrete bridge decks, namely: a conventionally reinforced deck made with standard concrete, designed and constructed following standard practices of MDT’s Bridge Bureau; a deck with reduced reinforcement made with normal concrete, designed following the empirical design approach presented in the AASHTO LRFD Standard Specifications for Highway Bridges and constructed following standard MDT practice; and a conventionally reinforced deck made with high performance concrete (HPC) developed following FHWA guidelines.


The structural behavior of these decks under vehicle live loads and their long-term durability under environmental and vehicular demands will be studied. The performance of the decks will be compared and contrasted with due consideration of the known and projected costs for each type of deck. The project results will include:• a description of the load carrying mechanisms observed for each deck (load path and load magnitudes),• a description of the distress sustained by each deck over the duration of the project and the associated causes of this distress (e.g., live load demands, thermal expansion and contraction, etc.),• an estimate of the effect of this distress on the longevity of each deck,• an analysis of the life cycle costs of each deck (although this analysis will be based on only a few years of performance data), and•benchmark data on as-built deck conditions and early deterioration that can be used to evaluate performance well into the future.


Files & Documents

Sponsors & Partners

  • Research and Innovation Technology Administration (RITA) Sponsor
  • Montana Department of Transportation (MDT) Sponsor

Part of: Infrastructure Maintenance and Materials, Infrastructure Longevity and Sustainability

Project Tagged In: bridge decks, Evaluation and Assessment, Instrumentation

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