Long-Term Infrastructure Program Letter Report: January 30, 2019 (2019) / Chapter Skim
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500 Fifth Street, NW, Washington, DC 20001 Phone 202.334.2936 Fax 202.334.2920 E-mail npedersen@nas.edu www.TRB.org January 30, 2019 Brandye Hendrickson Deputy Administrator Federal Highway Administration 1200 New Jersey Avenue, SE Washington, DC Dear Deputy Administrator Hendrickson, The committee for the Review of Federal Highway Administration (FHWA) Infrastructure R&D Program met November 29–30, 2018, in Washington, D.C., to review and discuss the progress of the Long-Term Infrastructure Program (LTIP)
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2 the condition of NHS assets.2 Implementing regulations for asset management are codified in 23 CFR Part 515. Many state departments of transportation (DOTs)
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3 OVERVIEW Long-Term Pavement Performance Conceived and initiated as part of the first Strategic Highway Research Program (SHRP) in 1987, the LTPP has been managed by FHWA since 1992.
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4 Based on consultations with state DOT bridge engineers, the LTBP program established six priority areas for data collection during the initial phase to address the most problematic bridge elements7: Untreated decks, Treated decks, Deck joints, Bearings, Coatings for steel superstructure elements, and Condition of embedded pretensioned strands and post-tensioned tendons. At present, the program is limited to the collection of data on untreated bridge decks.
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5 5. Production of, and plans for, improved communication, including a draft of a one-page brochure the committee requested, plans for semi-annual web meetings with this committee's expert task groups for pavements and bridges, and for quarterly one-page updates to this committee on program progress; 6.
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6 Laboratory Testing FHWA staff described a new experiment that will test accelerated deterioration of a full-scale bridge superstructure over a two-year period at Rutgers University's new Bridge Evaluation and Accelerated Structural Testing (BEAST®) laboratory.8 This unique facility can apply heavy loads at an accelerated pace, vary temperatures from below freezing to more than 100 degrees Fahrenheit, and simulate freeze-thaw cycles, precipitation, and application of deicing chemicals.
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7 State Data As mentioned above, the LTBP is collecting legacy state data for about 500 bridges in the LTBP sample, which the program requested from state DOTs a few years ago. FHWA's contractor has coded the legacy data for entry into the LTBP database.
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8 the committee, as well as plans for developing deterioration models based on lab-collected and NBI and NBE performance data, appear to be promising avenues for developing future interim products. An ongoing dialogue with states about their needs for interim products would help build and sustain a stronger partnership for the future collection of bridge and pavement performance data.
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9 testing and developing approaches for measuring the performance of deck treatments, bearings, joints, coatings, and other bridge components. It may be possible for FHWA to also encourage universities with bridge and NDE expertise to develop and share ideas about measuring condition and performance, perhaps through interactions with TRB technical committees, workshops with experts, LTBP paper competitions, and other means that are not resource intensive.
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10 Recommendation 6: The LTIP program managers should develop a concerted program of outreach to key stakeholders that would include brief documents and brochures explaining the rationale and goals of the program, a high-level LTBP strategic plan targeted to decision makers, and a list of short-term objectives with deliverables. These documents should stress why the LTBP and LTPP programs are so important to meeting the needs of asset managers and owners today in addition to explaining the data the programs intend to collect over time.
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