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The purpose of this research report is to establish guidelines for identifying highway rehabilitation projects warranting acceleration within Texas. Reduction in the total number of days allocated for project completion is recommended if savings in user costs are greater than the additional costs of accelerating the project. Throughout this report, the short-term impacts to road users and the environment were analyzed, and methods for quantifying user costs were reviewed. The potential consequences of accelerating rehabilitation projects were also presented. A methodology to estimate additional construction cost was developed to assess the effectiveness of accelerated construction schedules. Finally, recommendations are made to identify candidates within the Texas highway system for expediting highway rehabilitation by means of threshold traffic volumes warranting project acceleration.
Masters Theses in the Pure and Applied Sciences was first conceived, published, and disseminated by the Center for Information and Numerical Data Analysis and Synthesis (CINDAS)* at Purdue University in 1957, starting its coverage of theses with the academic year 1955. Beginning with Volume 13, the printing and dis semination phases of the activity were transferred to University Microfilms/Xerox of Ann Arbor, Michigan, with the thought that such an arrangement would be more beneficial to the academic and general scientific and technical community. After five years of this joint undertaking we had concluded that it was in the interest of all concerned if the printing and distribution of the volumes were handled by an international publishing house to assure improved service and broader dissemination. Hence, starting with Volume 18, Masters Theses in the Pure and Applied Sciences has been disseminated on a worldwide basis by Plenum Publishing Corporation of New York, and in the same year the coverage was broadened to include Canadian universities. All back issues can also be ordered from Plenum. We have reported in Volume 38 (thesis year 1993) a total of 13,787 thesis titles from 22 Canadian and 164 United States universities. We are sure that this broader base for these titles reported will greatly enhance the value of this impor tant annual reference work. While Volume 38 reports theses submitted in 1993, on occasion, certain uni versities do report theses submitted in previous years but not reported at the time.
This report will be of interest to state and local highway agency construction managers and contractors with regard to learning about best practices of time-related incentive and disincentive contract provisions and their effect on staffing levels, productivity, project cost, quality, contract administration, and the contractor's operations and innovations. The report also presents a decision process guide to use as a template for crafting the incentive/disincentive provisions.
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 413: Techniques for Effective Highway Construction Projects in Congested Urban Areas explores a diverse set of techniques designed to address highway construction challenges in congested urban areas such as high-traffic volumes, utility conflicts, complex right-of-way acquisition issues, a diverse stakeholder base, and watchful news media. The report includes four case studies designed to help illustrate effective construction practices in congested urban areas.
Cited in Sheehy, Chen, and Hurt . Volume 38 (thesis year 1993) reports a total of 13,787 thesis titles from 22 Canadian and 164 US universities. As in previous volumes, thesis titles are arranged by discipline and by university within each discipline. Any accredited university or college with a grad
The nation0́9s transportation networks including its roads, highways and bridges are aging and deteriorating at an increasing and rapid rate. The vulnerability of these aging networks of roads and bridges is exacerbated when they are subjected to natural disasters such as earthquakes and hurricanes which often cause severe disruption of the level of service provided by these transportation networks. Significant financial and construction resources are needed to complete the highway reconstruction and rehabilitation projects required to repair these aging and damaged transportation networks and bringing them to acceptable levels. The lack of sufficient resources to complete these highway construction projects concurrently requires effective and efficient utilization of these limited financial and construction resources in order to satisfy multiple and often conflicting objectives. Accordingly, there is a pressing need for new decision support models that are capable of: (1) analyzing the impact of reconstruction/rehabilitation efforts on the performance of transportation networks; (2) optimizing post-disaster reconstruction efforts of damaged transportation networks in order to simultaneously minimize reconstruction costs and network service disruption; and (3) optimizing highway rehabilitation of deficient transportation networks in order identify optimal program(s) that maximize net societal benefits while minimizing the level of service disruption experienced by travelers during the construction efforts. First, a highway service disruption model is developed to support measuring and evaluating the expected disruption in the level of service provided by aging and damaged transportation networks during highway reconstruction and rehabilitation projects. The model considers the impact of construction projects and their dynamic nature on the functional performance of aging and damaged transportation networks during reconstruction and rehabilitation efforts. The capabilities of the developed model in assessing the service disruption in aging and damaged transportation networks, include: (1) considering the dynamic nature of construction operations and activities and identifying their expected impact on the functional performance of aging and damaged transportation networks during reconstruction and rehabilitation efforts; (2) accounting for the rationality of travelers in choosing which route/detour to use to reach their destinations; and (3) evaluating the overall loss/savings in network travel time of the aging and damaged transportation networks during highway reconstruction and rehabilitation efforts. These new and unique capabilities of the developed model should prove useful to decision makers and planners in departments of transportation (DOTs) and should contribute to planning and optimizing highway reconstruction and rehabilitation efforts. Second, resource utilization model and multi-objective optimization models are developed to enable an efficient and effective reconstruction process for damaged transportation networks in the aftermath of natural disasters. The developed models provide a number of new and unique capabilities in generating optimal tradeoffs between network service disruption and reconstruction cost. These capabilities include: (1) considering the impact of the limited availability of resources on scheduling the reconstruction efforts for damaged transportation networks; (2) evaluating the service disruption in the damaged transportation network during the reconstruction efforts; and (3) optimizing the utilization of reconstruction resources to minimize the network service disruption of damaged transportation networks while keeping the reconstruction costs to a minimum. These new and unique capabilities of the developed models should prove useful to decision makers and planners in emergency management agencies and should contribute to enhancing the planning of reconstruction efforts for damaged transportation networks after natural disasters. Third, a highway rehabilitation planning and optimization model is developed to enable efficient and effective rehabilitation of aging transportation networks. This model incorporates four new modules that provide new capabilities in generating optimal tradeoffs between maximizing net rehabilitation benefits and minimizing network service disruption. These capabilities are demonstrated in the ability of the developed rehabilitation planning and optimization model to consider a number of practical highway rehabilitation requirements, including: (1) considering the impact of the limited availability of funding on planning rehabilitation efforts for aging transportation networks; (2) evaluating the expected service disruption and road user savings during and after completion of rehabilitation efforts; (3) estimating the expected net benefits of rehabilitation programs; and (4) optimizing the allocation of financial resources to maximize net rehabilitation benefits and minimize network service disruption. These new and unique capabilities of the research developments presents in this chapter should prove useful to decision makers and planners in departments of transportation (DOTs) and should contribute to enhancing the planning of rehabilitation efforts for aging transportation networks. The main research developments of this study are expected to contribute to the advancement of current practices in highway construction planning and optimization and can lead to: (1) accelerating the completion of highway reconstruction and rehabilitation projects and minimizing the service disruption experienced by travelers during the construction work; (2) optimizing the allocation of limited budgets and financial resources to competing highway projects; and (3) improving the utilization efficiency of construction resources in highway projects and therefore increasing their productivity.