Performance of Bridges That Received Funding Under the Innovative Bridge Research and Construction Program (2019) / Chapter Skim
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23 3 Highway Agency Experience with the IBRC Program The first section below describes the use today of the technologies that were used in the states' Innovative Bridge Research and Construction (IBRC) projects.
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24 PERFORMANCE OF BRIDGES are used regularly in appropriate situations, while most states are not using fiber-reinforced polymer (FRP) deck elements (6 out of 9 states not using)
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25 T A B L E 3 -1 P re se nt U se o f IB R C T ec hn ol og ie s, C as e St ud y St at e H ig hw ay A ge nc ie s T ec hn ol og y C ur re nt S ta tu s of T ec hn ol og y Sp ec ia l P ro vi si on s or S pe ci fic at io ns N ot in U se D ev el op in g Im pl em en ta ti on Pr oc es se s Im pl em en ta ti on Pr oc es s in P la ce N ot A pp lic ab le A ge nc y D ev el op ed A A SH T O O th er C on cr et e H PC 0 0 10 0% ( 9/ 9)
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26 T A B L E 3 -2 P re se nt U se o f IB R C T ec hn ol og ie s, A A SH T O S ur ve y R es po nd en ts a nd I nt er vi ew ed H ig hw ay A ge nc ie s T ec hn ol og y N am e C ur re nt ly U si ng T ec hn ol og y Sp ec ia l P ro vi si on s or S pe ci fic at io ns N ot A pp lic ab le A ge nc y/ St at e D ev el op ed A A SH T O O th er C on cr et e H PC 67 % ( 28 /4 2)
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27 T A B L E 3 -2 P re se nt U se o f IB R C T ec hn ol og ie s, A A SH T O S ur ve y R es po nd en ts a nd I nt er vi ew ed H ig hw ay A ge nc ie s T ec hn ol og y N am e C ur re nt ly U si ng T ec hn ol og y Sp ec ia l P ro vi si on s or S pe ci fic at io ns N ot A pp lic ab le A ge nc y/ St at e D ev el op ed A A SH T O O th er C on cr et e H PC 67 % ( 28 /4 2)
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28 PERFORMANCE OF BRIDGES project included advancing the state of the art in concrete bridge construction technology, developing experience in using advanced materials, and developing recommended design procedures. The bridge was constructed as a 110-foot simple span bridge with a three-beam cross section.
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HIGHWAY AGENCY EXPERIENCE WITH THE IBRC PROGRAM 29 • High cost of the material. • Insufficient benefits to justify additional costs.
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30 PERFORMANCE OF BRIDGES provided included difficulty with maintaining a suitable driving surface on FRP deck sections, poor field performance due to detailing, and the lack of inspection and repair guidelines for these materials. An example of a project from the IBRC program that used technologies that have not been widely adopted is the Rollins Road Bridge in New Hampshire, one of the interviewed states (Bell and Bowman 2007)
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HIGHWAY AGENCY EXPERIENCE WITH THE IBRC PROGRAM 31 included providing the motivation to try a new technology, mitigating the risk associated with new technologies, and assisting in the development of standards and specifications for new technologies. In several instances, an IBRC project was a state's first experience with a technology that the state eventually adopted as part of regular practice.
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32 PERFORMANCE OF BRIDGES not yet developed. Institutional resistance to exploring new technologies in the absence of standards and specifications was also identified as a barrier when existing practices are considered adequate.
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HIGHWAY AGENCY EXPERIENCE WITH THE IBRC PROGRAM 33 funding from the IBRC program. The bridge girders were reinforced using pretensioned FRP tendons and posttensioned FRP composite cable (Grace et al.
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