2005 ... Steohen G. Wright · TxDOT is experiencing wider use of multi-tiered MSE and Concrete Block retaining walls. These walls often involve loads and geometric configurations that are different from the ones for which current FHWA and AASHTO design guidelines were developed. Accordingly, the current research project was
4485-2 [CTR] ... 0-4485-2
Full-text Link:
2004 ... Wade N. Osborne and Stephen G. Wright · Current AASHTO and FHWA design guidelines for MSE walls are with particular emphasis on multi-tiered wall systems. Current software including the MSEW 2.0 design software and the general-purpose slope stability software known as UTEXAS4 are also examined with emphasis placed on
4485-1 [CTR] ... 0-4485-1
Full-text Link:
2004 ... Whitt Hall, Michael S. Bomba and C. Michael Walton · Although occurrences of life-threatening kidnappings are rare in the United States, each year the media reports on missing children who are later found brutally murdered. Law enforcement officials have learned that one effective tool for preventing injury to missing children
4450-01-1 [CTR] ... FHWA/TX-05/5-4450-01-1
Full-text Link:
2005 ... Yi-Chang Chiu [and four others] · The advances of modern communication technologies have changed the way the roadway information is collected. Innovative surveillance systems powered by various communication technologies have been installed to support various transportation operations. The abundance of available
4449-P1 [CTR] ... Product 0-4449-P1
Full-text Link:
2005 ... Yi-Chang Chiu and Carl Haas · The advances of modern communication technologies have changed the way the roadway information is collected. Innovative surveillance systems powered by various communication technologies have installed to support various transportation operations. The abundance of available
4449-1 [CTR] ... 0-4449-1
Full-text Link:
2006 ... Michael Bomba [and three others] · The following report chronicles the landside access needs at Texas deepwater seaports. It focuses on how the needs for Landside Access improvements are assessed, planned and financed. Trends in maritime trade in Texas are analyzed. The report also provides guidelines for Metropolitan
4437-1 [CTR] ... 0-4437-1
Full-text Link:
2005 ... Robert Patterson [and nine others] · Urban sprawl, driven by population and economic growth, is a pressing issue in the U.S., partly because of its contribution to growing levels of vehicle miles traveled (VMT). According to government figures, new development is gobbling up land at an alarming rate of 365 acres per hour
4420-2 [CTR] ... 0-4420-2
Full-text Link:
2006 ... Christin J. Coselli [and six others] · The primary objective of this research study was to evaluate the behavior and capacity of the IBTS and alternate 8 in. UTSE (Uniform Thickness Slab End) details at expansion joints, especially on skewed ends of bridge slabs. The two full-scale CIP (cast-in-place) specimens, 0o and 45o
4418-1 [CTR] ... FHWA/TX-05/0-4418-1
Full-text Link:
2004 ... James O.Connor [and three others] · The primary objective of this research study was to develop an improved production rate information system for the Texas Department of Transportation (TxDOT). The improved production rate information is intended for determining construction contract time for highway construction projects
4416-1 [CTR] ... 0-4416-1
Full-text Link:
2004 ... Chandra Bhat and Jolanda Prozzi · The objective of this document is to provide the user with instructions to install and use TransCAD embedded models to display container flows on Texas road and rail infrastructure, and to conduct mode choice analysis to establish the potential for diverting containerized freight from road to rail. In
4410-P3 [CTR] ... Product 0-4410-P3
Full-text Link:
2005 ... Robert Harrison [and five others] · The Texas Department of Transportation (TxDOT) has supported several freight studies since 2000 to enhance the transportation of freight in the state. The report covers the results of a study to examine container flows in Texas, display available data using a GIS platform, and evaluate the
4410-2 [CTR] ... 0-4410-2
Full-text Link:
2003 ... Jolanda Prozzi [and three others] · Worldwide container demand has increased significantly over the past decade, due to growing international trade and the introduction of larger containerships on certain trade routes. The Texas Department of Transportation thus contracted the Center for Transportation Research at the University
4410-1 [CTR] ... 0-4410-1
Full-text Link:
2003 ... Christine J. Kirchhoff, Joseph F. Malina and Michael Barrett · The objective of this study was investigation of the potential beneficial use of compost manufactured topsoil in highway rights-of-way in Texas. The water holding capacity and the physical, chemical and microbiological characteristics of composted manures (dairy cattle,
4403-2 [CTR] ... 0-4403-2
Full-text Link:
2002 ... Christine Kirchhoff, Joseph F. Malina Jr., and Michael E. Barrett · TxDOT reports that composted manures have been used in 22 of the 25 TxDOT districts, usually with excellent results. The application of composted manures to rights-of-way successfully improved growth of vegetation and controlled erosion of slopes on highway
4403-1 [CTR] ... FHWA/TX-03/4403-1
Full-text Link:
2005 ... Manuel Trevino [and three others] · This report presents the research undertaken within two areas of study of thin asphalt concrete (AC) overlays to rehabilitate continuously reinforced concrete pavements (CRCP). The first one is the development of a decision tree for the project selection of a rehabilitation of this kind. The
4398-3 [CTR] ... 0-4398-3
Full-text Link:
2004 ... Manuel Trevino, B. Frank McCullough and David W. Fowler · There has been a significant increase in the use of BCOs as a way to extend the life of a pavement structure. This study establishes the appropriateness of a BCO as a pavement rehabilitation strategy proposing a methodology for project selection. · Publ. by: University
4398-2 [CTR] ... 0-4398-2
Full-text Link:
2004 ... Manuel Trevino [and three others] · This report presents the research and recommendations on the use of asphalt concrete (AC) overlays to rehabilitate continuously reinforced concrete pavements (CRCP). A thin bonded AC overlay may be an economical means to restore the riding quality of a CRCP. One of the main benefits of such
4398-1 [CTR] ... 0-4398-1
Full-text Link:
2006 ... Kevin Folliard, David Sutfin, Ryan Turner and David P. Whitney · Continuously reinforced concrete pavement (CRCP) is a major form of highway pavement in Texas due to its increase in ride quality, minimal maintenance, and extended service life. However, CRCP may sometimes experience pavement distress that results
4392-2 [CTR] ... 0-4392-2
Full-text Link:
2004 ... C.T. Haas [and five others] · The interim report (4386-1) identified, described, and discussed expediting methods that could be used in various phases of highway construction. Continuing the objectives of the first-year research, a system has been developed for Area Engineers and assistants to select proven, yet innovative, methods
4386-2 [CTR] ... 0-4386-2
Full-text Link:
2002 ... E. Simon [and five others] · Highway construction imposes substantial costs on the traveling public. Because of this, pressures exist to build projects faster and more efficiently. To make the most efficient use of funds for highway construction projects, and to minimize total road life cycle costs, a decision tool is needed for selecting
4386-1 [CTR] ... FHWA/TX-03/4386-1
Full-text Link:
2002 ... Seong-Min Kim and C. Frank McCullough · The sensitivity analysis of the concrete pavement thickness has been conducted to investigate if the current thickness tolerance can be loosened and to propose the acceptable thickness tolerance limits so that NDT for thickness measurements can be used with confidence. The current
4382-1 [CTR] ... FHWA/TX-03/4382-1
Full-text Link:
2004 ... Zhanmin Zhang, Pithon Vithayasricharoen and Terry E. Dossey · Project 0-4381 is intended to develop the appropriate mechanism and the corresponding algorithms that can be used to build an automated relationship between the pavement layer database and other potential source(s) of pavement layer information at TxDOT. This
4381-P2 [CTR] ... Product 0-4381-P2
Full-text Link:
2005 ... Zhanmin zhang, Terry Dossey and Pithon Vithayasricharoen · Research Project 0-4381, entitled "Develop an Automated System for Updating Pavement Layer Data", is intended to develop the appropriate mechanism and the corresponding algorithms that can be used to build an automated relationship between the pavement structure
4381-1 [CTR] ... 0-4381-1
Full-text Link:
2003 ... Chandra R. Bhat and Sriharsha Nerella · This guide familiarizes users with the GIS-based platform for vehicle age distribution and VMT distribution, including installation instructions, system and program requirements, and important guidelines for use of the software package. · Publ. by: University of Texas at Austin. Center for
4377-4 [CTR] ... FHWA/TX-03-4377-4 PRC
Full-text Link:
2003 ... Chandra R. Bhat, Sandeep Conoor and Sriharsha Nerella · The EPA recently released the latest version of MOBILE6, its first major update to the MOBILE series since 1996. This model will soon become the required standard for air quality conformity analysis transportation conformity measure (TCM) effectiveness analysis. A brief
4377-3 [CTR] ... FHWA/TX-03-4377-3 PRC
Full-text Link:
2002 ... Chandra R. Bhat [and four others] · The Environmental Protection Agency recently released the latest version MOBILE6, its first major update to the MOBILE series since 1996. This model will soon become the required standard for air quality conformity and transportation control measure (TCM) effectiveness analysis. MOBILE6 users
4377-2 [CTR] ... FHWA/TX-02/ 4377-2
Full-text Link:
2002 ... Chandra Bhat, Sandeep S. Conoor and Sara Poindexter · The Environmental Protection Agency (EPA) highway vehicle emission factor model provides average in-use fleet emission factors for three pollutants [volatile organic compounds (VOC, carbon monoxide (CO), and oxides of nitrogen (NOx)], for gas and diesel vehicles for
4377-1 [CTR] ... FHWA/TX-02/ 4377-1
Full-text Link:
2005 ... Amanda M. Bergeron [and three others] · The report documents an economic design study to determine the best alternatives for rapid and economical replacement of bridges in rural locations. Two lane simple span bridges with spans up 100 feet were considered. A steel bridge using rolled W sections with either metal grid deck
4375-CT-2 [CTR] ... 5-4375-CT-2
Full-text Link:
2006 ... Michael D. Brown [and five others] · The design of reinforced concrete members for shear was studied. Both strut-and-tie models (STM) and sectional methods were examined. Initially, the response of isolated struts was observed. Various layout of reinforcement were used within the isolated struts. Three series of deep beam tests
4371-2 [CTR] ... 0-4371-2
Full-text Link:
2006 ... Jeffrey L. Lee and Kenneth H. Stokoe · The Rolling Dynamic Deflectometer (RDD) was developed by the researchers at The University of Texas at Austin in the late 1990s. It has been used in many project-level pavement studies in Texas. The current testing speed of the RDD is limited to 1 mph (1.6 km/hr) using first-generation rolling
4357-1 [CTR] ... 0-4357-1
Full-text Link:
[2012] ... By: Mike Murphy, C. Pechlivanidis, Zhanmin Zhang · The Pavement Structural Condition Index (SCI) is a screening tool for pavement maintenance and rehabilitation (M&R) decisions at the network-level. · CONTENTS: 5-4322-01-P1 [0-4322-01-P1 Background document (PDF) ; SCI: Excel 2003 version ; SCI: Excel 2007 version] --
4322-01-P1/P2 [CTR] ... Product 5-4322-01-P1; Product 5-4322-01-P2
Full-text Link:
2011 ... Sree Sravya Sruthi Peddibhotla, Dr. Mike Murphy, and Dr. Zhanmin Zhang · The Texas Department of Transportation (TxDOT) uses the Pavement Management Information Systems (PMIS) to store and analyze pavement data, and to summarize information needed to support pavement-related decisions. The information on
4322-01-1 [CTR] ... FHWA/TX-11/5-4322-01-1
Full-text Link:
2003 ... Zhanmin Zhang [and three others] · Huge quantities of bituminous mix in the form of seal coats and HMAC thin overlays are applied by the TxDOT every year to improve ride quality and seal existing cracks, but these measures do not correct possible underlying weakneses that will cause roughness or distress to quickly reappear.
4322-1 [CTR] ... 0-4322-1
Full-text Link:
2007 ... Todd Helwig [and four others] · The frequency of use of steel box girders has increased in the state of Texas and throughout the United States over the past 10 years. Some of the advantages of the structural shape that have led to the increased utilization include improved aesthetic, maintenance, and structural benefits.
4307-1 [CTR] ... FHWA/TX-07/0-4307-1
Full-text Link:
2003 ... Alexei Tsyganov [and three others] · Numerous improvement projects on urban arterial streets cause significant changes in traffic operation and safety. A review of the design standard documents shows that the majority of guidelines related to work zone design do not adequately reflect the specifics of urban arterial streets.
4266-2 [CTR] ... 0-4266-2
Full-text Link:
2003 ... Alexei Tsyganov, Randy Machemehl and Katherine Liapi · Continuous industrial development in Texas led to a significant population increase. This caused an overload of the existing highway network, especially in the major urban areas, and in turn called for necessary alterations and improvements to bring the urban transportation
4266-1 [CTR] ... 0-4266-1
Full-text Link:
2003 ... Samantha L. Hon, Michael E. Barrett and Joseph Malina Jr. · The objectives of this research are to help TxDOT anticipate the requirements of the TMDL process and to have the data at hand to respond if TxDOT is identified as contributing to the impairment. An interactive GIS map of the impaired streams was created in ArcGIS
4252-1 [CTR] ... 0-4252-1
Full-text Link: