2006 ... RS: James T. O’Connor; Researchers: Carlos Caldas, Khali Persad · With highway projects frequently located in congested, interference-prone environments, timely utility adjustments are more critical than ever. The aim of this research was to investigate the effective implementation of a utility adjustment approach that puts utility
4997-S [CTR] ... PSR 0-4997-S ... Project Summary Report, 0-4997
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2001 ... B. Frank McCullough, Terry Dossey and David W. Fowler · TxDOT internal use only. · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
4978 summary [CTR] ... PSR 4978-S ... Project Summary Report
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2004 ... Mansour Solaimanian, Gianmarco Renato Pendola, Thomas W. Kennedy · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
4977-S [CTR] ... PSR 4977-S ... Project Summary Report, 7-4977
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2003 ... Bugao Xu and Yaxiong Huang · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
4975-S [CTR] ... PSR 4975-S ... Project Summary Report, 7-4975
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2005 ... Bugao Xu · An automated pavement distress rating system was developed under Texas Department of Transportation (TxDOT) Research Project 7-4975 in the past several years. The system now can scan 100 percent of pavement surfaces at any vehicle speed between 5 and 70 miles per hour, detect cracks in real time, and
4958-S [CTR] ... Project Summary Report, 0-4985
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2004 ... C.T. Haas [and five others] · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
4957-S [CTR] ... PSR 4957-S ... Project Summary Report, 7-4957
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2002 ... Chandra Bhat [and six others] · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
4938-S [CTR] ... PSR 4938-S ... Project Summary Report, 7-4938
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2003 ... Mansour Solaimanian and Thomas W. Kennedy · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
4909-S [CTR] ... PSR 0-4909-S ... Project Summary Report, 0-4909
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2002 ... P.G. Deshpande [and five others] · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
4904-S [CTR] ... PSR 4904-S ... Project Summary Report, 7-4904
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2007 ... RS: Moon Won; Researchers: Cesar Medina-Chavez and Manuel Trevino · There are many miles of portland cement concrete (PCC) pavements in Texas that have provided satisfactory performance for much longer than their original design lives. Some of them are still in good structural and functional condition, while some of
4893 [CTR] ... PSR 0-4893 ... Project Summary Report, 0-4893
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2009 ... Kevin J. Folliard [and four others] · Sulfate attack is a complex form of deterioration that has damaged concrete structures throughout the world. Sulfate attack is particularly complex because the source of sulfates can be external or internal (delayed ettringite formation), and the distress can be chemical in nature, due to alteration
4889 [CTR] ... PSR 0-4889 ... Project Summary Report, 0-4889
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2007 ... RS: Randall J. Charbeneau; Researchers: Michael E. Barrett and Jaehak Jeong · Superelevation transitions are used to help balance centrifugal forces on vehicles moving though curved highway sections. At superelevation transitions, the outside lane cross slope is rotated from negative cross slope at normal crown
4875 [CTR] ... PSR 0-4875 ... Project Summary Report, 0-4875
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2007 ... RS: Jorge A. Prozzi; Researchers: Samrat Chatterjee [and three others] · Cold patching asphalt mixtures constitute an essential element in the maintenance of Texas' highway infrastructure. These mixtures are often used to patch potholes in areas with cold and wet weather, particularly when hot mix asphalt is not available as a result
4873 [CTR] ... PSR 0-4873 ... Project Summary Report, 0-4873
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2006 ... RS: Ellen Rathje; Researchers: Kenneth Stokoe, Stephen Wright · The performance of earth retaining walls and embankments is predominantly controlled by the engineering properties of the backfill. To ensure that the backfill has adequate properties, the soil is compacted to achieve a specified minimum dry unit weight and a water
4835-S [CTR] ... PSR 0-4835-S ... Project Summary Report, 0-4835
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2007 ... Moon Won [and five others] · This study focused on three areas: (1) a national survey of practice for NGOGFC pavements, (2) lab results for permeability and abrasion testing on specimens, and (3) development of a methodology for remote detection of ice formation, which also allows monitoring the effectiveness of de-icing
4834-S [CTR] ... PSR 0-4834-S ... Project Summary Report, 0-4834
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2007 ... RS: Jorge Zornberg; Researchers: Jorge Prozzi and Kenneth Stokoe · Base reinforcement results from the addition of a geosynthetic at the bottom or within a base course to increase the structural or load-carrying capacity of a pavement system. While there is clear evidence that geosynthetic reinforcements can lead to
4829 [CTR] ... PSR 0-4829 ... Project Summary Report, 0-4829
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2007 ... Richard E. Klingner and Eric B. Williamson · The researchers found that the proposed designs for the retrofit T203 and T501 barriers met the TxDOT prescribed performance standards and can safely be used to replace severely damaged barriers. · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
4823-CT-S [CTR] ... PSR 0-4823-CT-S ... Project Summary Report, 0-4823-CT
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2007 ... RS: Joseph Yura; Researcher: Michael Engelhardt · The AASHTO LRFD Bridge Design Specifications provide rules for strength design of shear connectors for steel composite beams. These current rules require that sufficient shear studs be provided to develop the full composite strength of the steel beam. That is, shear studs
4811 [CTR] ... PSR 0-4811 ... Project Summary Report, 0-4811
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2005 ... Khali R. Persad [and four others] · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
4808-S [CTR] ... PSR 0-4808-S ... Project Summary Report, 0-4808
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2006 ... RS: Rob Harrison; Researcher: Jolanda Prozzi · State departments of transportation (DOTs) require disaggregated truck flow data to determine the impact of truck movements on the state’s road infrastructure—bridges and pavements—and the implications in terms of funding. In addition, robust truck data
4713-S [CTR] ... PSR 0-4713-S ... Project Summary Report, 0-4713
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2006 ... RS: Robert Harrison, CTR; Researchers: Gary Barricklow [and five others] · In 2002, Governor Rick Perry announced his vision for a new transportation system for Texas, the Trans Texas Corridors (TTC). He proposed that Texas be connected by a 4,000-mile network of corridors up to 1,200 feet wide with separate lanes for passenger
4702-S [CTR] ... PSR 0-4702-S ... Project Summary Report, 0-4702
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2006 ... RS: James T. O'Connor; Researchers: Michael Clarke [and three others] · The research effort was conducted on a multi-objective agenda to investigate various issues related to the adoption of the DB delivery approach for the delivery of a large highway project. First, researchers investigated issues and lessons on contract
4661-S [CTR] ... PSR 0-4661-S ... Project Summary Report, 0-4661
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2005 ... RS: Lance Manuel; Researchers: Loukas F. Kallivokas and Eric B. Williamson · The collapse of the Queen Isabella Causeway Bridge resulting from a vessel collision motivated this study that recognizes that vessel impact on bridge is a serious issue and that the likelihood of such accidents needs to be carefully evaluated in the design
4650-S [CTR] ... PSR 0-4650-S ... Project Summary Report, 0-4650
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2006 ... RS: C. Michael Walton; Researcher: Michael S. Bomba · The purpose of this project was to identify the potential effects, including both challenges and opportunities, the TTC system could create for the Texas aviation system, and to provide recommendations for airport managers, airport governing boards, TxDOT Aviation Division
4644-S [CTR] ... PSR 0-4644-S ... Project Summary Report, 0-4644
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2006 ... RS: Karl Frank; Researchers: Justin D. Brown [and four others] · An experimental project to compare the fatigue and tensile strength of steel with punched and drilled holes is proposed. The study will examine the influence of type of steel, steel thickness, holes size, punch clearance and wear, and edge distance upon the performance of
4624-S [CTR] ... PSR 0-4624-S ... Project Summary Report, 0-4624
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2005 ... Alexei Tsyganov, Randy Machemehl, Ahmed Qatan and Nick Warrenchuck · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
4621-S [CTR] ... PSR 0-4621-S ... Project Summary Report, 0-4621
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2005 ... G. Edward Gibson [and four others] · Reducing the time from planning to construction of a project can ensure that the benefits of the project are available sooner to the traveling public. This will, in turn, greatly facilitate public commerce and reduce adverse traffic problems and their associated costs. This research project looked
4617-S [CTR] ... PSR 0-4617-S ... Project Summary Report, 0-4617
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2008 ... RS: James T. O’Connor; Researchers: William O’Brien and Taehong Sohn · Constructing highway projects demands effective coordination among all disciplines involved in such projects. These projects require securing the approval of federal, state, and private agencies. Moreover, there are various pre-construction activities that need to
4617-01 [CTR] ... PSR 4617-01 ... Project Summary Report, 5-4617-01
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2005 ... David Luskin · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
4609-S [CTR] ... PSR 0-4609-S ... Project Summary Report, 0-4609
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2005 ... Michael Barrett · Nonpoint source pollution is an environmental problem that raises a concern among regulatory agencies and water quality professionals. A portion of this pollution is conveyed to receiving waters by stormwater drainage from highways, often via vegetated roadside shoulders, also referred to as borrow ditches.
4605-S [CTR] ... PSR 0-4605-S ... Project Summary Report, 0-4605
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2006 ... RS: Michael Barrett; Researcher: Joseph Malina · A water quality sampler was placed at the edge of pavement of Loop 360 in Austin, Texas, in February 2004 to document improvements in water quality caused by the vegetation on the highway shoulder. At that time, the pavement was a conventional hot mix asphalt. During the
4605-2 [CTR] ... PSR 0-4605-2 ... Project Summary Report, 0-4605-2
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2007 ... RS: Kevin J. Folliard; Researchers: Maria C.G. Juenger [and four others] · Excessive heat generation during land pavements placement and curing of concrete can result in concrete of poor quality. Thermal shock can result, leading to excessive cracking. Under certain conditions excessive heat can also trigger delayed ettringite
4563 [CTR] ... PSR 0-4563 ... Project Summary Report, 0-4563
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2005 ... T. Luthi [and four others] · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
4562-S1 [CTR] ... PSR 0-4562-S1 ... Project Summary Report, 0-4562
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2007 ... Joseph F. Malina [and three others] · Non-point source water pollution is an environmental issue currently facing water quality professionals. Although some highway runoff is treated by best management practices (BMPs) (structural or non-structural systems), or is diverted to municipal treatment systems, a fraction of water pollution
4543-S [CTR] ... PSR 0-4543-S ... Project Summary Report, 0-4543
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2006 ... Jorge A. Prozzi and Feng Hong · The recently developed guide for the “Mechanistic-Empirical Design of New and Rehabilitated Pavement Structures” (commonly referred to as the M-E Design Guide) proposes applying mechanistic principles to replace the traditional empirical design approach suggested in the AASHTO 1993 “Guide for
4510-S [CTR] ... PSR 0-4510-S ... Project Summary Report, 0-4510
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2006 ... Stephen G. Wright · Existing Federal Highway Administration (FHWA) and American Association of State Highway Officials’ (AASHTO) design guidelines for single- and multi-tiered mechanically stabilized earth (MMSE) walls, as well as general limit equilibrium approaches, were reviewed and evaluated. The variables and
4485-S [CTR] ... PSR 0-4485-S ... Project Summary Report, 0-4485
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2003 ... Yi-Chang Chiu [and four others] · While major installations to support advanced traffic management applications are being deployed along Texas’s major urban freeways, the need for surveillance and/or detector capabilities also exists in numerous remote locations with no established telecommunications capability for the
4449-S [CTR] ... PSR 0-4449-S ... Project Summary Report, 0-4449
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2006 ... RS: Rob Harrison; Researchers: Michael Bomba, Jolanda Prozzi and C. Michael Walton · The project had multiple objectives. The researchers initially compiled an annotated bibliography with descriptions of more than 100 papers, reports, and presentations on related topics representing the full breadth of landside access issues. The
4437-S [CTR] ... PSR 0-4437-S ... Project Summary Report, 0-4437
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2005 ... C.J. Coselli [and six others] · The Texas Department of Transportation (TxDOT) currently uses, for most of its bridges, the “IBTS” standard detail for bridge slab ends at expansion joints (Figure 1). That detail has enabled TxDOT to eliminate the use of diaphragms at slab ends by increasing the thickness at slab ends. Slab ends are
4418-S [CTR] ... PSR 0-4418-S ... Project Summary Report, 0-4418
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2005 ... James T. O'Connor [and three others] · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
4416-S [CTR] ... PSR 0-4416-S ... Project Summary Report, 0-4416
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2006 ... RS: Robert Harrison; Researchers: Chandra Bhat [and four others] · Congestion along key Texas highway corridors has continued to rise in recent years due to increases in usage by both passenger and freight vehicles. In addition to building new lane miles, the Texas Department of Transportation (TxDOT) is attempting to manage the
4410-S [CTR] ... PSR 0-4410-S ... Project Summary Report, 0-4410
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2004 ... Christine J. Kirchhoff, Joseph 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, poultry
4403-S [CTR] ... PSR 0-4403-S ... Project Summary Report, 0-4403
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2004 ... Manuel Trevino, B. Frank McCullough, Yetkin Yildirim, and Terry Dossey · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
4398-S [CTR] ... PSR 0-4398-S ... Project Summary Report, 0-4398
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2006 ... Kevin J. Folliard, David P. Whitney, David Sutfin, and Ryan Turner · Continuously reinforced concrete pavement (CRCP) is the major type of highway pavement used for the expressways in the urban parts of Texas because of its increased ride quality, minimal maintenance, and extended service life afforded from CRCP.
4392-S [CTR] ... PSR 0-4392-S ... Project Summary Report, 0-4392
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2003 ... C.T. Haas [and five others] · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
4386-S [CTR] ... PSR 0-4386-S ... Project Summary Report, 0-4386
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2002 ... Seong-Min Kim and B. Frank McCullough · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
4382-S [CTR] ... PSR 0-4382-S ... Project Summary Report, 0-4382
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2004 ... Zhanmin Zhang, Terry Dossey and Pithon Vithayasricharoen · Up-to-date pavement layer data is one of the most critical issues in Pavement Management Systems (PMS). With the availability of accurate and up-to-date pavement layer data, more effective management and engineering of highway pavements can be achieved in
4381-S [CTR] ... PSR 0-4381-S ... Project Summary Report, 0-4381
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2003 ... Chandra R. Bhat and Sriharsha Nerella · Transportation planners, traditionally used to focusing on regional travel demand forecasting, now have the added responsibility of providing traffic data to air quality agencies for use in mobile source emissions analysis. Coordinated efforts among land use planners, travel demand planners, and air
4377-S [CTR] ... PSR 0-4377-S ... Project Summary Report, 0-4377
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2005 ... M.D. Brown and O. Bayrak · The shear strength of reinforced concrete beams was investigated in this project. The research focused on deep beams similar to that shown in Figure 1. With the introduction of the AASHTO LRFD Bridge Design Specifications, structures such as those shown in Figure 1 must be designed using strut-and-tie
4371-S [CTR] ... PSR 0-4371-S ... Project Summary Report, 0-4371
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2005 ... Jeffrey L. Lee and Kenneth H. Stokoe · The Rolling Dynamic Deflectometer (RDD) is a nondestructive deflection testing device developed by researchers at The University of Texas at Austin in the 1990s. The developmental work was funded by Texas Department of Transportation (TxDOT) Research Project No. 0-1422.
4357-S [CTR] ... PSR 0-4357-S ... Project Summary Report, 0-4357
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2003 ... Zhanmin Zhang, Lance Manuel, Ivan Damnjanovic, and Zheng Li · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
4322-S [CTR] ... PSR 0-4322-S ... Project Summary Report, 0-4322
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2003 ... Alexei Tsyganov, Randy Machemehl, Katherine Liapi, and Dinesh Natarajan Mohan · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
4266-S [CTR] ... PSR 0-4266-S ... Project Summary Report, 0-4266
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2003 ... Samantha L. Hon, Michael E. Barrett, and Joseph F. Malina, Jr. · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
4252-S [CTR] ... PSR 0-4252-S ... Project Summary Report, 0-4252
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2003 ... Tejas Mehta, Amulya Kottapalli, Hani S. Mahmassani, Chandra Bhat · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
4197-S [CTR] ... PSR 0-4197-S ... Project Summary Report, 0-4197
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2004 ... Zhanmin Zhang and Randy B. Machemehl · Pavements are an important part of the highway transportation infrastructure, accounting for the single largest share of the overall investment. A tremendous amount of time and money is spent each year on the construction of new pavements, as well as on the maintenance and rehabilitation
4186-S [CTR] ... PSR 0-4186-S ... Project Summary Report, 0-4816
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2006 ... Yetkin Yildirim and Kenneth H. Stokoe II · To evaluate the laboratory-field correlation for the Hamburg Wheel Tracking Device (HWTD), nine test sections were constructed on IH-20 in Harrison County. This research included a monitoring of the construction of the test sections; the collection of construction data, performance data
4185-S [CTR] ... PSR 0-4185-S ... Project Summary Report, 0-4185
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2005 ... K.H. Frank · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
4178-S [CTR] ... PSR 0-4178-S ... Project Summary Report, 0-4178
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2006 ... Ellen Rathje, David Treje and Kevin Folliard · Mechanically stabilized earth (MSE) walls (Figure 1) have been used throughout the U.S. since the 1970s. The popularity of MSE systems is based on their low cost, aesthetic appeal, simple construction, and reliability. To ensure long-term integrity of MSE walls, select backfills consisting
4177-S [CTR] ... PSR 0-4177-S ... Project Summary Report, 0-4177
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2006 ... Francisco J. Brenes, Sharon L. Wood and Michael E. Kreger · During the past ten years, the Texas Department of Transportation has constructed several, high-profile bridge projects using precast bent cap systems. This approach has reduced construction schedules dramatically and has provided safer working environments for
4176-S [CTR] ... PSR 0-4176-S ... Project Summary Report, 0-4176
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2001 ... Kara Kockelman, Lydia Heard, Young-Jun Kweon, and Thomas Rioux · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
4171-S [CTR] ... PSR 0-4171-S ... Project Summary Report, 0-4171
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2006 ... Jolanda Prozzi, Robert Harrison, Jorge Prozzi and Phil Nash · This study, prepared by a team of researchers from the Center for Transportation Research, The University of Texas at Austin, and Texas Tech University, had several objectives. First, the research team: assessed and described the condition of the existing
4169-S [CTR] ... PSR 0-4169-S ... Project Summary Report, 0-4169
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2002 ... Hani S. Mahmassani, Carl Haas, Haitham Logman and Hyun-Joon Shin · The implementation of Intelligent Transportation Systems (ITS) carries the promise of more effcient use of already existing transportation networks. Advanced Traffic Management Systems (ATMS) assist operators of Traffic Management Centers (TMC) in managing
4156-S [CTR] ... PSR 0-4156-S ... Project Summary Report, 0-4156
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2006 ... RS: Michael D. Engelhardt; Researchers: Richard E. Klingner and Gunup Kwon · This project was an implementation of research conducted previously under TxDOT research project 0-4124. Project 0-4124 developed a technique to increase the load capacity of existing bridge floor systems consisting of a non-composite concrete
4124-S [CTR] ... PSR 4124-S ... Project Summary Report, 5-4124-01
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2009 ... Karl H. Frank, Amy Smith Barret and Hyeong Kim · The bridge evaluated in this study is an elevated section of I-345 near the interchange of I-45 and I-30 in downtown Dallas. This is a very busy interchange that plays a vital role in transporting vehicles to and from downtown Dallas. The bridge consists of two twin steel plate
4124-01 [CTR] ... PSR 4124-01 ... Project Summary Report, 5-4124-01
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2009 ... Michael D. Engelhardt, Richard E. Klingner and Gunup Kwon · This project was an implementation of research conducted previously under TxDOT research project 0-4124. Project 0-4124 developed a technique to increase the load capacity of existing bridge floor systems consisting of a non-composite concrete slab and steel
4124-01 [CTR] ... PSR 4124-01 ... Project Summary Report, 5-4124-01
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2003 ... Kevin Folliard [and three others] · With the release of American Society of Civil Engineer?s (ASCE) 2003 Progress Report, an update to the 2001 Report Card for America?s Infrastructure in which the country?s infrastructure received a grade of D+, it is obvious that the United States faces a growing epidemic of deteriorating
4098-S [CTR] ... PSR 0-4098-S ... Project Summary Report, 0-4098
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2005 ... C.T. Bilich and S.L. Wood · Two monitoring systems for bridges were evaluated for use by the Texas Department of Transportation. The first system was designed to increase the quantitative information obtained during a routine inspection of a steel bridge. The miniature, battery-powered data acquisition system selected for
4096-S [CTR] ... PSR 0-4096-S ... Project Summary Report, 0-4096
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2005 ... M.E. Kreger and Oguzhan Bayrak · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
4086-S [CTR] ... PSR 0-4086-S ... Project Summary Report, 0-4086
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2006 ... Kevin J. Folliard [and six others] · The state of Texas has been widely impacted by materials-related distress in various transportation structures. This distress has been mainly attributed to alkali-silica reaction (ASR) and delayed ettringite formation (DEF) and has been commonly referred to by the Texas Department of
4085-S [CTR] ... PSR 0-4085-S ... Project Summary Report, 0-4085
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2002 ... Rob Harrison, Jolanda Prozzi, John McCray, and Russell Henk · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
4083-S [CTR] ... PSR 0-4083-S ... Project Summary Report, 0-4083
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2006 ... RS: Chandra Bhat; Researchers: Rachel Copperman [and five others] · The trip-based travel demand models used in Texas and other states today were developed with the primary objective to evaluate major capital improvements. While this continues to be an important objective of travel demand models, there has been a shift in
4080-S [CTR] ... PSR 0-4080-S ... Project Summary Report, 0-4080
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2006 ... Kara M. Kockelman [and three others] · Right-of-way (ROW) acquisition is a significant element of most transportation projects and can be very expensive, time-consuming, and socially sensitive. While project planning, design, and construction have relatively finite timelines, property acquisition can be much lengthier than expected,
4079-S [CTR] ... PSR 0-4079-S ... Project Summary Report, 0-4079
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2005 ... Amy E. Eskeridge [and three others] · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
4069-S [CTR] ... PSR 0-4069-S ... Project Summary Report, 0-4069
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2006 ... Yetkin Yildirim and Jorge Prozzi · An important element of pavement maintenance is crack sealing and filling. Hot pour materials are the most commonly used, providing good performance in most cases. The performance history and costs of cold pour asphalt emulsion crack sealants are not well known or well documented
4061-S [CTR] ... PSR 0-4061-S ... Project Summary Report, 0-4061
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2004 ... Cesar Ivan Medina Chavez and B. Frank McCullough · Publ. by: University of Texas at Austin. Center for Transportation Research (CTR).
4035-S [CTR] ... PSR 0-4035-S ... Project Summary Report, 0-4035
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