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Flood Protection Plan: Phase 2

Description: "The purpose of this study was to expand on the Phase I City of Brownsville Flood Study that was developed in 2006 to expand the study area to include two additional Brownsville watersheds in the Northwest quadrant of the City and to create a linked watershed model to allow for the investigation of inter watershed transfers of storm-water flow between the watershed studied in 2006. This study analyzes several of the gaps identified in the 2006 Flood Study by 1) developing baseline models to assess existing flooding risks in the Resaca del Rancho Viejo (RRV) and Cameron County Drainage District No.1 Ditch No.3 (CCDD#) watersheds; 2) examining the impact of storm surge on each watershed; and 30 linking the hydraulic models for those watershed that are hydraulically linked. This study, like the 2006 study, is meant for planning use only and should not be used for engineering design purposes" (p. ii).
Date: August 2011
Creator: Ambiotec Civil Engineering Group

U.S. and Texas international trade and transportation

Description: "This report examines various aspects of international trade, transportation, and foreign practices implemented to facilitate and fund transport-related infrastructure. The report is composed of six chapters. The first chapter provides an overview of the U.S. international trade outlook. The second chapter describes the roles played by air cargo transport, ports and ocean carriers, railroads, and the motor carrier industry in U.S. international trade. The third and fourth chapters focus on Texas-specific international trade and modal gateways. The fifth chapter reviews various transport funding mechanisms, Intelligent Transportation System (ITS) applications, and forms of public-private partnerships adopted in various foreign countries. The final chapter describes the expansion of the Panama Canal and its likely Texas impacts."
Date: July 2011
Creator: Anazia, Larry K. & Boske, Leigh B.

Texas Department of Transportation administration research : tasks completed Fiscal Year 2011

Description: "This research project evaluates numerous transportation issues and develops findings and/or recommendations based on results. This project has been structured to address some of the emerging, critical, and unique considerations related to transportation."
Date: October 2011
Creator: Anderson, S. D.; Curtis, Beaty; Ding, Liang; Ellis, David; Epps, Jon; Estakhri, Cindy K. et al.

Herbs Made Easy

Description: Booklet containing a general overview of how to grow and harvest herbs, with recipes that use basil, bay, chives, cilantro, mint, oregano, parsley, rosemary, sage, and thyme.
Date: 2011~
Creator: Anding, Jenna & Masabni, Joe

National Register of Historic Places Eligibility Testing of Sites 41LT56, 41LT310, 41LT387, 41LT397, 41LT415, 41LT422, 41LT424, 41LT425, and 41RT413 in Luminant's Kosse Mine, Limestone and Robertson Counties, Texas

Description: Report on the results of archaeological investigations at nine sites at Luminant's Kosse Mine in Limestone and Robertson Counties, Texas, to determine whether the sites were eligible for the National Register of Historic Places.
Date: September 2011
Creator: Atkins North America, Inc.

Exploratory study : vehicle mileage fees in Texas

Description: This project evaluates Vehicle Mileage (VM) fees as a possible funding mechanism for meeting the State of Texas' long-term transportation needs. Researchers conducted listening sessions with the general public and stakeholders to gather input on the concept. Researchers also prepared a decision matrix that can aid policy makers in evaluating the various trade-offs in policy that will be encountered in vehicle mileage fee system development. This study identified both challenges and opportunities for implementation of VM fees.
Date: January 2011
Creator: Baker, Richard & Goodin, Ginger

Texas Department of Transportation administration research: tasks completed Fiscal Year 2010

Description: "This research project evaluates numerous transportation issues and develops findings and/or recommendations based on results. This project has been structured to address some of the emerging, critical, and unique considerations related to transportation."
Date: February 2011
Creator: Baker, Richard; Ding, Liang; Epps, Jon; Estakhri, Cindy K.; Fry, Gray; Geiselbrecht, Tina et al.

Project report on the continued development and analysis of the Flexible Pavements Database

Description: "The efforts of 0-6275 were primarily twofold. One aspect was geared towards extensive performance monitoring and material testing for better characterization of the experimental sections included as part of 0-5513 as well as new sections that were to be incorporated in the enhanced version of the TFPD. The other aspect of the study was to look into the calibration of the transfer functions in the newly developed MEPDG as well as Texas ME Design procedure being sponsored by TXDOT through the 0-5798 research study. It was understood that an effort to determine reliable bias correction factors would necessitate a large volume of project specific information for a number of pavement sections that are well spread out within the state such that differences in materials, traffic, construction practices and climate are captured. The TFPD supplemented by other databases like the DCIS and the LIMS will ensure that the data needs for the calibration exercise are met and fulfilled to the extent possible. When time series data were not available, the researchers utilized relevant data from the FHWA's Long Term Pavement Performance Studies (LTPP). This interim report summarizes the activities performed during the first 7 months of the project, when the current project was terminated. Therefore, this document reports on the work performed in Tasks 1 through 7.
Date: February 2011
Creator: Banerjee, Ambarish; Aguiar-Moya, Jose Pablo; Sivaram, Prasad; Smit, Andre de F. & Prozzi, Jorge Alberto

The potential for improving rail international intermodal services in Texas and the Southwest region of the United States

Description: "The report covers a period of great significance for railroading in the U.S as it contains a number of milestones now shaping the future performance of the industry. The specific subject is improving inter-modal service so that it can support state and regional highway planning, now facing severe financial cut-backs as revenue sources become fully committed to bond servicing, user taxes, loose purchasing power and fuel consumption begins to fall."
Date: June 2011
Creator: Blaze, James R. & Harrison, Robert

Manual for Assessing Safety Hardware test 3-11 on the Texas T101 bridge rail

Description: The Texas T101 bridge rail is widely used in the state of Texas. Previous testing demonstrated its ability to contain and redirect passenger cars and a 20,000-lb school bus. Based on this testing, the Federal Highway Administration accepted the T101 bridge rail as an NCHRP Report 350 TL-3 barrier. However, its impact performance with pickup trucks was never evaluated. Under research project 0-5526, Impact Performance of Roadside Safety Appurtenances, researchers conducted a performance assessment of Texas roadside safety devices to help evaluate the impact of adopting the new AASHTO Manual for Assessing Safety Hardware (MASH) guidelines on current hardware. Testing and evaluation of the T101 bridge rail was recommended as a high priority. This recommendation was based primarily on the absence of pickup truck testing on the system, and concerns that the 27-inch rail height may not be compatible with pickup trucks and SUVs under design impact conditions. The T101 bridge rail did not meet MASH evaluation criteria for test 3-11. The vehicle overturned after losing contact with the barrier.
Date: March 2011
Creator: Bligh, Roger P. & Menges, Wanda L.

Development of a MASH TL-2 guardrail-to-bridge rail transition compatible with 31-inch guardrail

Description: The TxDOT Design Division is in the process of developing new guardrail standards that comply with the AASHTO Manual for Assessing Safety Hardware (MASH). The new guardrail system will provide increased capacity and improved impact performance relative to the current design. A key feature of the new system is an increased in rail mounting height from 27 inches to 31 inches. TxDOT's current TL-2 metal beam transition is 27 inches tall and is not compatible with the new 31 inch guardrail system. While the high-speed, nested thrie beam transition system meets MASH guidelines and is compatible with a 31-inch guardrail, it would be cost-prohibitive to use it on all roadways. The objective of this research was to develop a transition that is suitable for use on lower speed roadways, less expensive and complex than the current high-speed (i.e., TL-3) transition design, and is compatible with a 31-inch guardrail. A low-cost guardrail-to-bridge rail transition was successfully developed and tested under MASH Test Level 2 conditions. It is compatible with a 31-inch guardrail and can connect to rigid concrete bridge rails. It is considered suitable for implementation on roadways that have traffic conditions appropriate for the use of TL-2 safety hardware. Use of this system provides significant savings in material and installation cost compared to the high speed transition system.
Date: December 2011
Creator: Bligh, Roger P.; Arrington, Dusty R. & Menges, Wanda L.

MASH test 3-11 on the 5-inch cast in place deck barrier anchors

Description: "A full-scale crash test was performed to evaluate the impact performance of a Texas T223 concrete beam and post bridge rail anchored to a 5-nch cast-in-place deck (CIPD). The testing followed the MASH standards for Test Level 3 ( TL-#) longitudinal barriers. The test performed was American Association of State Highways and Transportation Officials (AAHSTO) Manual for Assessing Safety Hardware (MASH) test 3-11, which involves a 2270P (500 lb) pickup truck impacting the critical impact point (CIP) of the barrier at a nominal impact speed and angle of 62 mi/h and 25degress, respectively. This test evaluated the strength of the barrier and its anchorage to the 5-inch CIPD."
Date: October 2011
Creator: Bligh, Roger P.; Menges, Wanda L. & Arrington, Dusty R.

MASH test 3-37 of the TxDOT 31-inch w-beam downstream anchor terminal

Description: Report discussing the findings of a study into issues related to roadside safety devices: "The objective of this study was to develop a suitable replacement for the downstream 'turn-down' guardrail anchor system. The 'turn-down' guardrail anchor system does not meet mandated test requirements under MASH for upstream anchor application terminals; however, it does meet downstream requirements for previous crash testing standard" (abstract). It includes background information, system details, test requirements and evaluation criteria, crash test procedures, crash test results, and conclusions.
Date: October 2011
Creator: Bligh, Roger P.; Menges, Wanda L. & Arrington, Dusty R.

Determination of minimum height and lateral design load for MASH test level 4 bridge rails

Description: "This research had the objectives of determining the minimum rail height and lateral design impact load for MASH test level 4 bridge rails. Using parametric finite element analysis and subsequent crash testing, the researchers determined the minimum recommended rail height for MASH TL-4 impact conditions to be 36 inches. Later Design impact for MASH TL-4 test conditions was determined to be 80 kips."
Date: October 2011
Creator: Bligh, Roger P.; Menges, Wanda L. & Sheikh, Nauman Mansoor

School traffic workshop: dealing with Texas-sized problems around schools

Description: "This report summarized the series of "Traffic around Schools"" workshops conducted throughout the state of Texas to familiarize TxDOT employees and partner agencies with two key products from previous research projects (0-4286 and 0-5470) and other tools and guidance that are available for dealing with problems around schools."
Date: October 2011
Creator: Brewer, Marcus A.; Fitzpatrick, Kay & Cooner, Scott A.

Realtime monitoring of bridge scour using remote monitoring technology

Description: The research performed in this project focuses on the application of instruments including accelerometers and tiltmeters to monitor bridge scour. First, two large scale laboratory experiments were performed. One experiment is the simulation of a bridge with a shallow foundation, and the other is the simulation of a bridge with a deep foundation. A series of instruments were installed on the simulated bridge to monitor the performance of the bridge due to scour. Both the shallow foundation experiment and deep foundation experiment show that accelerometers and tiltmeters can be used in scour monitoring events since both give warning of bridge failure successfully. Subsequently, two individual monitoring systems were designed and installed on two bridges: US59 over Guadalupe River Bridge and SH80 over San Antonio River Bridge in Texas. Realtime data are collected and transmitted to a computer server at Texas A&M University, which can be accessed remotely. The instrumentation on the two bridges does not show great hope of application of accelerometers to monitor bridge scour because of a lack of sufficient excitation from traffic. Another issue with the accelerometers is the high power consumption during the transmission of accelerometer data, which cannot be satisfied with a typical solar panel and battery. Tiltmeters can provide the integral behavior of the bridge, and therefore are very useful devices for scour monitoring. Guidelines and protocols for scour monitoring based on the US59 over Guadalupe River Bridge and the SH80 over San Antonio River Bridge are provided in the study.
Date: February 2011
Creator: Briaud, Jean-Louis; Hurlebaus, Stefan; Chang, Kuang-An; Yao, Congpu; Sharma, Hrishikesh; Yu, Ok-Youn et al.