Long-Term Infrastructure Program Letter Report: January 23, 2018 (2018) / Chapter Skim
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January 23, 2018 Ms. Brandye Hendrickson Acting Administrator Federal Highway Administration 1200 New Jersey Ave., SE, Room E87-312 Washington, D.C.
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2 In this section we summarize our understanding of these programs and the issues that they face based on the presentations made at the meeting and the materials provided to the committee. Long-Term Pavement Performance Program Conceived and initiated as part of the first Strategic Highway Research Program (SHRP)
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3 jointed concrete pavements in the GPS sample. The other half of the remaining test sections were built to LTPP program specifications to assess the performance of specific designs and thicknesses, referred to as Specific Pavement Studies (SPS)
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4 will be selected as "reference bridges." These bridges will be assessed every two years using nondestructive evaluation (NDE) technologies and detailed hands-on visual inspections until accurate deterioration models can be validated.
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5 states calibrate models for pavements, but similar performance data are lacking for bridges. In smaller states, underestimated maintenance and repair for a major bridge can completely distort annual and five-year investment plans.
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6 collection, but believed that the agency needs a long-term vision for how to gather information on bridges holistically. Committee members also discussed whether the LTBP program should be assessing the risk of rare extreme events of bridge failures, which would certainly include gathering more extensive data on the condition of sub- and superstructures.
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7 RECOMMENDATIONS In the current resource-constrained environment, which is expected to continue, state DOTs are anxious to have the best possible short- and long-term asset management and budget plans for extending the life of their existing assets. Better measures of long-term performance will improve predictive models, optimize funding allocation, and strengthen long-range planning for asset replacement.
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8 f. The committee recognized that the LTPP program is mature and winding down as data collection from remaining test sections is completed, but the plan should articulate a longerterm vision for additional data collection.
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9 Recommendation 5 FHWA should develop a basic definition of bridge performance as a system. The committee believes that it is appropriate to focus on decks initially because expenditures on bridge decks represent a significant portion of state bridge maintenance and repair spending.
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10 ATTACHMENT A TRB Long-Term Infrastructure Performance (LTIP) Committee Meeting November 29-30, 2017 National Academies' Keck Center Room 208 Washington, DC Meeting Participants Committee Thomas K
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11 ATTACHMENT B Agenda TRB Long-Term Infrastructure Performance (LTIP) Committee Meeting National Academies' Keck Center, Room 208, Keck Building 500 Fifth St., NW, Washington, DC 20001 November 29-30, 2017 The purpose of this meeting is to communicate and receive feedback on FHWA's goals for its investment in the long-term Infrastructure Research and Technology Program and the agency's plans for achieving those goals, inform/update committee members of current and past activities of the Long-Term Bridge and Long-Term Pavement Programs, and identify and discuss issues affecting program success.
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12 Thursday, November 30, 2017 08:30-10:00 Questions and Discussion from Prior Day Sorel/Committee/FHWA 10:00-10:20 Break 10:20-12:00 Closed Session: LTIP Committee Deliberation LTIP Members and TRB Staff 12:00-1:00 Lunch in cafeteria 1:00-1:30 Chairs' Wrap-Up and Discussion Tom Sorel 1:30-2:00 FHWA's Wrap-Up and Discussion Cheryl Richter Jean Nehme 2:00 End of Meeting
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