%0 Book %A Transportation Research Board %A National Academies of Sciences, Engineering, and Medicine %E Chang, Carlos M. %E Nazarian, Soheil %E Vavrova, Marketa %E Yapp, Margot T. %E Pierce, Linda M. %E Robert, William %E Smith, Roger E. %T Consequences of Delayed Maintenance of Highway Assets %D 2017 %U https://nap.nationalacademies.org/catalog/24933/consequences-of-delayed-maintenance-of-highway-assets %> https://nap.nationalacademies.org/catalog/24933/consequences-of-delayed-maintenance-of-highway-assets %I The National Academies Press %C Washington, DC %G English %K Transportation and Infrastructure %P 80 %X TRB's National Cooperative Highway Research Program (NCHRP) Research Report 859: Consequences of Delayed Maintenance of Highway Assets presents a process for quantifying the consequences of delayed maintenance of highway assets that considers the asset preservation policy, the maintenance and budget needs, and the analyses of delayed maintenance scenarios. This process considers delayed maintenance caused by the inability to meet the agency-defined application schedule or the unavailability of the funds required to perform all needed maintenance, and expresses the consequences in terms of asset condition and the costs to owners and road users. Detailed descriptions of the use of the proposed process to quantify the consequences of delayed maintenance for seven highway assets are available in appendices from the contractor’s final report:Appendix C-PavementsAppendix D-BridgesAppendix E-CulvertsAppendix F-GuardrailsAppendix G-LightingAppendix H-Pavement markingsAppendix I-Signs %0 Book %A Transportation Research Board %A National Academies of Sciences, Engineering, and Medicine %T Renewing the National Commitment to the Interstate Highway System: A Foundation for the Future %D 2019 %U https://nap.nationalacademies.org/catalog/25334/renewing-the-national-commitment-to-the-interstate-highway-system-a-foundation-for-the-future %> https://nap.nationalacademies.org/catalog/25334/renewing-the-national-commitment-to-the-interstate-highway-system-a-foundation-for-the-future %I The National Academies Press %C Washington, DC %G English %K Transportation and Infrastructure %P 614 %X TRB Special Report 329: Renewing the National Commitment to the Interstate Highway System: A Foundation for the Future explores pending and future federal investment and policy decisions concerning the federal Interstate Highway System. Congress asked the committee to make recommendations on the “features, standards, capacity needs, application of technologies, and intergovernmental roles to upgrade the Interstate System” and to advise on any changes in law and resources required to further the recommended actions. The report of the study committee suggests a path forward to meet the growing and shifting demands of the 21st century.The prospect of an aging and worn Interstate System that operates unreliably is concerning in the face of a vehicle fleet that continues to transform as the 21st century progresses and the vulnerabilities due to climate change place new demands on the country’s transportation infrastructure. Recent combined state and federal capital spending on the Interstates has been about $20–$25 billion per year. The estimates in this study suggest this level of spending is too low and that $45–$70 billion annually over the next 20 years will be needed to undertake the long-deferred rebuilding of pavements and bridges and to accommodate and manage growing user demand. This estimated investment is incomplete because it omits the spending that will be required to meet other challenges such as boosting the system’s resilience and expanding its geographic coverage.The committee recommends that Congress legislate an Interstate Highway System Renewal and Modernization Program (RAMP). This program should focus on reconstructing deteriorated pavements, including their foundations, and bridge infrastructure; adding physical capacity and operations and demand management capabilities where needed; and increasing the system’s resilience. The report explores ways to pay for this program, including lifting the ban on tolling of existing general-purpose Interstate highways and increasing the federal fuel tax to a level commensurate with the federal share of the required RAMP investment.View the videos, recorded webcast, graphics, summary booklet, press release, and highlights page at interstate.trb.org. %0 Book %A Transportation Research Board %A National Academies of Sciences, Engineering, and Medicine %T Final Report for NCHRP Report 574: Guidance for Cost Estimation and Management for Highway Projects During Planning, Programming, and Preconstruction %D 2006 %U https://nap.nationalacademies.org/catalog/22045/final-report-for-nchrp-report-574-guidance-for-cost-estimation-and-management-for-highway-projects-during-planning-programming-and-preconstruction %> https://nap.nationalacademies.org/catalog/22045/final-report-for-nchrp-report-574-guidance-for-cost-estimation-and-management-for-highway-projects-during-planning-programming-and-preconstruction %I The National Academies Press %C Washington, DC %G English %K Transportation and Infrastructure %P 0 %X TRB’s National Cooperative Highway Research Program (NCHRP) Web-Only Document 98, Final Report for NCHRP Report 574: Guidance for Cost Estimation and Management for Highway Projects during Planning, Programming, and Preconstruction details the steps followed by the research team in the development of NCHRP Report 574: Guidance for Cost Estimation and Management for Highway Projects during Planning, Programming, and Preconstruction. NCHRP Report 574 examines highway cost estimation practice and cost estimation management with the goal of helping achieve greater consistency and accuracy between planning, programming and preliminary design, and final design. The Guidebook explores strategies, methods, and tools to develop, track, and document realistic cost estimates during each phase of the process.