Volume 1 addresses how to apply a methodology for estimating the life expectancies of major types of highway system assets. The methodology is designed for use in lifecycle cost analyses that support management decision making. Volume 2 describes the technical issues and data needs associated with estimating asset life expectancies and the practices used in a number of fields--such as the energy and financial industries--to make such estimates.

TRB’s National Cooperative Highway Research Program (NCHRP) Report 713: Estimating Life Expectancies of Highway Assets, Volume 2: Final Report describes the technical issues and data needs associated with estimating asset life expectancies and the practices used in a number of fields—such as the energy and financial industries—to make such estimates.

Addresses how to apply a methodology for estimating the life expectancies of major types of highway system assets. The methodology is designed for use in lifecycle cost analyses that support management decision making.

Describes the technical issues and data needs associated with estimating asset life expectancies and the practices used in a number of fields - such as the energy and financial industries - to make such estimates.

Volume 1 addresses how to apply a methodology for estimating the life expectancies of major types of highway system assets. The methodology is designed for use in lifecycle cost analyses that support management decision making. Volume 2 describes the technical issues and data needs associated with estimating asset life expectancies and the practices used in a number of fields--such as the energy and financial industries--to make such estimates.

Focusing on fundamental principles, Hydro-Environmental Analysis: Freshwater Environments presents in-depth information about freshwater environments and how they are influenced by regulation. It provides a holistic approach, exploring the factors that impact water quality and quantity, and the regulations, policy and management methods that are necessary to maintain this vital resource. It offers a historical viewpoint as well as an overview and foundation of the physical, chemical, and biological characteristics affecting the management of freshwater environments. The book concentrates on broad and general concepts, providing an interdisciplinary foundation. The author covers the methods of measurement and classification; chemical, physical, and biological characteristics; indicators of ecological health; and management and restoration. He also considers common indicators of environmental health; characteristics and operations of regulatory control structures; applicable laws and regulations; and restoration methods. The text delves into rivers and streams in the first half and lakes and reservoirs in the second half. Each section centers on the characteristics of those systems and methods of classification, and then moves on to discuss the physical, chemical, and biological characteristics of each. In the section on lakes and reservoirs, it examines the characteristics and operations of regulatory structures, and presents the methods commonly used to assess the environmental health or integrity of these water bodies. It also introduces considerations for restoration, and presents two unique aquatic environments: wetlands and reservoir tailwaters. Written from an engineering perspective, the book is an ideal introduction to the aquatic and limnological sciences for students of environmental science, as well as students of environmental engineering. It also serves as a reference for engineers and scientists involved in the management, regulation, or restoration of freshwater environments.

This document contains guidance on a common framework for the discussion, development and implementation of highway infrastructure asset valuation by local highway authorities in the UK, in line with financial reporting and asset management requirements. Specific guidance is given for roads, segregated footpaths and cycle routes, and the document covers all fixed assets that form an essential part of the highway network, including earthworks and drainage, pavements and verges, fencing, lighting, street furniture, traffic management and communication assets. It sets out a step by step procedure covering asset clarification, data requirements, calculation of Gross Replacement Cost, calculation of depreciation and impairment, reporting and monitoring of asset value; and examples are given in the appendices to illustrate methodology application.

Transportation asset management delivers efficient and cost-effective investment decisions to support transportation infrastructure and system usage performance measured in economic, social, health, and environmental terms. It can be applied at national, state, and local levels. This distinctive book addresses asset management for multimodal transportation, taking account of system component interdependency, integration, and risk and uncertainty. It sets out rigorous quantitative and qualitative methods for addressing system goals, performance measures, and needs; data collection and management; performance modeling; project evaluation, selection, and trade-off analysis; innovative financing; and institutional issues. It applies as easily to static traffic and time-dependent or dynamic traffic which exists on a more local level. It is written for transportation planners, engineers, and academia, as well as a growing number of graduate students taking transportation asset management courses.

The Government Accounting Standards Board (GASB) requires transportation agencies to report the values of their tangible assets. The shortcomings of traditional valuation methods include the implicit monolithic assumption of asset structures and the parochial range of value-related asset attributes considered in the evaluation process. Thus, this research developed enhanced methods and concepts for valuation. The elemental decomposition and multi-criteria (EDMC) method uses asset component costs, remaining service lives and condition. The replacement-downtime-salvage method considers life-cycle costs, including workzone user costs, and recycling benefits or disposal costs. The decommission-and-reuse method is based on the real-estate value of land occupied by the asset. The probabilistic method considers the asset value as a function of its survival likelihood. This study determined the total value of Indiana's state highway assets using traditional and proposed methods and new considerations. For the proposed EDMC method, this estimate was $45 billion. The value of pavements and bridges were $37.38B and $3.40B, respectively, together constituting 90% of total asset value. The total value of smaller assets (guardrails, underdrains, culverts, and road signs) was approximately $1.2B, and rights-of-way, $2.840B, constituting approximately 3% and 7%, respectively of the total asset value. On the basis of the unit asset values derived for Indiana, the existing asset inventory of other states, and the state-specific cost factors, the total estimated value of state-owned and overall highway bridge and pavement assets in the United States was estimated at $3.4T and $16.2T, respectively, using EDMC, and $2.9T and 13.8T, respectively, using GASB 34. The study also explored ways in which asset value could be incorporated in investment evaluation.