Innovative Financing Approach for President George Bush Turnpike

Author(s):  
Frank J. Smith

An innovative financing program for a toll project in Texas that has been financed and will be constructed by a joint-venture team composed of the Texas Department of Transportation (TxDOT) and the Texas Turnpike Authority (TTA) is described. The President George Bush Turnpike (State Highway 190) will connect 42.5 km (26.4 mi) of suburbs north of the city of Dallas. The project has been in various stages of planning and design since the late 1960s. Each agency working alone could not complete SH-190 in a timely and cost-effective fashion. Exploiting changes made to the state constitution in 1991 and maximizing the use of the innovative financing provision of the Intermodal Surface Transportation Efficiency Act, TxDOT, TTA, and FHWA in partnership developed a financing structure to accelerate the construction of this project.

Three unmarked graves within the predominantly African American Pioneer Cemetery in the City of Brazoria (Brazoria County), Texas, were exhumed and reburied within the cemetery. The graves were located within the right of way of State Highway 332, and were found during an earlier search phase done in conjunction with a planned expansion of the highway. The burial excavations and reburial were done in March and April 2003, by Prewitt and Associates, Inc., for the Texas Department of Transportation (TxDOT). The graves contained the remains of three unknown individuals—a young woman (17–23 years old), an older woman (45–60 years old), and an infant (2–4 years old)—who died in the late nineteenth or early twentieth centuries.


Author(s):  
Chiara Silvestri Dobrovolny ◽  
Roger P. Bligh ◽  
Justin Obinna ◽  
Mark McDaniel ◽  
Wade Odell

With increasing concern about mail-identity theft, there is a growing demand among homeowners and businesses for the use of locking mailboxes for theft deterrence and resistance to vandalism. Lockable mailbox products can be significantly larger and heavier than standard lightweight mailboxes. Therefore, the Texas Department of Transportation (TxDOT) requested evaluation of their crashworthiness before permitting their use on the state highway system. Under TxDOT Project 9-1002-12, crash tests were performed following the Manual for Assessing Safety Hardware (MASH) guidelines and procedures to assess the impact performance of lockable, secure mailboxes in both single and multiple mount configurations. Testing of the larger and heavier locking mailboxes on multiple-mount support posts was unsuccessful owing to vehicle windshield deformation and intrusion. This paper describes the efforts to develop and evaluate the crashworthiness of new proposed designs for multiple mailbox supports used with a combination of lockable and standard mailboxes. The crash tests were performed following MASH guidelines and the evaluation criteria. Two proposed designs were evaluated through full-scale crash testing. Both systems satisfied all required MASH evaluation criteria at low and high impact speeds using a passenger car, which was considered to be the critical design vehicle based on the mailbox mounting height.


2000 ◽  
Vol 1716 (1) ◽  
pp. 98-107 ◽  
Author(s):  
Kenneth H. Stokoe ◽  
James A. Bay ◽  
Brent L. Rosenblad ◽  
Michael R. Murphy ◽  
Kenneth W. Fults ◽  
...  

The Texas Department of Transportation (TxDOT), in partnership with the Center for Transportation Research, has implemented the Texas mobile load simulator (TxMLS) as a tool for accelerated testing of in-service pavements. Although the TxMLS has been used successfully to test in-service pavements in the Yoakum and Fort Worth districts, the fact that only one TxMLS machine exists limits the number of accelerated pavement tests (APT) that can be performed. Therefore, TxDOT is evaluating a modification of the rolling dynamic deflectometer (RDD) for use as a super-accelerated pavement tester. In this application, the truck-mounted dynamic loading system is operated in a stationary mode, with the loading rollers and rolling sensors of the RDD removed from operation. The servohydraulic actuator is used for application of harmonic loading to a wheel footprint on the pavement surface. Hundreds of thousands of load repetitions are applied in a matter of hours; hence the designation as super-accelerated testing. This stationary dynamic deflectometer (SDD) is being studied as a possible tool for use in expanding TxDOT’s APT program. The SDD may allow TxDOT to increase, in a cost-effective manner, the number of accelerated tests that can be performed. Preliminary tests have been performed with the TxMLS and SDD on two different pavement recycling strategies constructed on the northbound and southbound lanes of US-281 in the Fort Worth District. That the same conclusion was reached about the relative performance of the test sections with both machines indicates the potential usefulness of the SDD.


Author(s):  
Joel Butler

On behalf of CP&Y and the Texas Department of Transportation (TxDOT), AmaTerra Environmental conducted an intensive archeological survey of two of five proposed detention ponds in Brazoria and Fort Bend Counties, Texas. The detention ponds are part of TxDOT’s proposed widening of State Highway (SH) 36 from Farm to Market Road (FM) 2218 in Pleak, Fort Bend County to FM 1495 in Freeport, Brazoria County, Texas (CSJs 0187-05-050, 0188-02-029, 0188-03-019, 0188-04-035, 0188-04-025, 0188-05-027, 0188-06-046, 0111-08-100, 0187-05-048, 0188-04-044, and 0188-02-036). The project was completed in compliance with Section 106 of the National Historic Preservation Act (Section 106) and the Antiquities Code of Texas (ACT) under Permit no. 8868. Work was conducted April 17, 2019 by a team of two archeologists and consisted of visual inspection and shovel testing of two proposed pond locations (Varner Creek and Pond B). A total of 21 shovel tests were excavated and one new archeological site (41BO282) was recorded. This mid-twentieth century site, recorded in the proposed Pond B location, retains little to no data potential within the APE. It is therefore recommended not eligible for listing on the National Register of Historic Places or as a State Antiquities Landmark. Access was not available at the time of survey for proposed detention Pond A. However, it was visually inspected from the existing right-of-way (ROW) and its current use as a paved construction staging area indicates that archeological resources are unlikely to exist at the location. Therefore, no further work is recommended for this pond site. Rights of Entry (ROE) were not available at the time of survey for the remaining proposed pond locations (Big Creek 1 and Big Creek 2). AmaTerra recommends intensive archeological survey for these areas when access becomes available and prior to construction.


Author(s):  
Gary McVoy ◽  
Mark Sengenberger ◽  
Elizabeth Novak

Public-works agencies have an obligation to enhance the environment as opportunities arise. The New York State Department of Transportation (NYSDOT) has developed an environmental initiative to make an affirmative contribution to the environment, using the department’s organizational strengths. The environmental initiative is a paradigm shift applicable to all departments of transportation (DOTs). Conventional reactive regulatory compliance can reduce unnecessary environmental damage and sometimes gain grudging regulatory agency cooperation; however, it is not a positive, satisfying way of doing the people’s work. Through proactive steps, NYSDOT has become an important part of the state’s environmental solution (often at little or no additional cost) and has changed its working relationships with environmental agencies and groups. As these agencies and groups have become partners, instead of adversaries, permit-approval times have improved, mitigation costs have declined, morale has improved, and cost-effective environmental benefits are being realized. Procedures are outlined to apply the engineering capabilities of a DOT to the environmental-stewardship responsibilities shared by all governmental organizations.


1995 ◽  
Vol 32 (9-10) ◽  
pp. 75-84 ◽  
Author(s):  
A. D. Andreadakis ◽  
G. H. Kristensen ◽  
A. Papadopoulos ◽  
C. Oikonomopoulos

The wastewater from the city of Thessaloniki is discharged without treatment to the nearby inner part of the Thessaloniki Gulf. The existing, since 1989, treatment plant offers only primary treatment and did not operate since the expected effluent quality is not suitable for safe disposal to the available recipients. Upgrading of the plant for advanced biological treatment, including seasonal nitrogen removal, is due from 1995. In the mean time, after minor modifications completed in February 1992, the existing plant was put into operation as a two-stage chemical-biological treatment plant for 40 000 m3 d−1, which corresponds to about 35% of the total sewage flow. The operational results obtained during the two years operation period are presented and evaluated. All sewage and sludge treatment units of the plant perform better than expected, with the exception of the poor sludge settling characteristics, due to severe and persistent bulking caused by excessive growth of filamentous microorganisms, particularly M. Parvicella. Effective control of the bulking problem could lead to more cost-effective operation and increased influent flows.


2021 ◽  
Author(s):  
Aruã Da Silva Leite ◽  
Melina Macouin ◽  
Sonia Rousse ◽  
Jean-François Leon ◽  
Loïc Drigo ◽  
...  

<p>The finer fraction of the particulate matter (PM) is the most harmful health wise, as it has more capacity to reach deeper parts of the respiratory system. Among other constituents, PM also contains iron oxides, allowing for the use of magnetic methods in its investigation as proxies for the whole of PM. Those methods present advantages in comparison to traditional ones, being quick, cost effective and sensible to investigate iron oxides among PM. </p><p>To better understand the risks related to PM exposition in the domestic context, the assessment of magnetic parameters may be used in outdoor and indoor environments, giving us information on the concentration of iron oxides (and consequently, PM) and its dispersion from one environment to the other. </p><p>We developed a citizen sciences experiment in the city of Toulouse, France. Tree barks were used as bio-collectors. Garlands composed of tree bark pieces were distributed to the population in May-2019, and placed in both indoors and outdoors of flats and homes to capture PM. They were retrieved after one year. Measurement of magnetic susceptibility, ARM, SIRM, S -ratio and estimation of superparamagnetic concentration were performed. A total of 86 bio-collectors kits were successfully analyzed. The preliminary results indicate a higher concentration of iron oxides outdoors, with a mean difference between outdoor and indoor measurements of 6.58x10<sup>-9</sup>m<sup>3</sup>/kg and 1.38x10<sup>-5</sup>Am<sup>2</sup>/kg in susceptibility and SIRM respectively. The concentration of the SP fraction also follows this trend of higher outdoor values. The magnetic mineralogy is mostly dominated by low coercivity magnetite-like carriers.</p><div> <div> <div> </div> </div> <div> <div> </div> </div> </div>


Author(s):  
Timothy K. Perttula ◽  
Bo Nelson ◽  
LeeAnna Schniebs

The S. Stockade site was discovered on a small rise (330 feet amsl) in the Tankersley Creek floodplain during a recent archeological survey for the Texas Department of Transportation. Tankersley Creek is a southward-flowing tributary to Big Cypress Creek, and enters that creek’s floodplain a few miles below the Lake Bob Sandlin dam. There is a dense concentration of prehistoric archeological sites throughout the Tankersley Creek valley, particularly post-A.D. 800 Caddo Indian sites. This paper discusses the archeology of the S. Stockade site, a Late Caddoan Titus phase settlement. The rise at the S. Stockade site is grass-covered (with a surface visibility of less than 10%), except along the eroded slopes, where the clay B-horizon subsoil is exposed. The old creek channel immediately to the west of the rise has recently been channelized, and between the rise and the channelized creek are several low-lying marshy areas with standing water.


2021 ◽  
Vol 9 (1) ◽  
pp. 1-14
Author(s):  
Syeda Faeza Hasan ◽  
Farjana Rahman

Dhaka is one of the fastest-growing cities in the world with a population of 21 million. With the constantly rising inhabitants, this urbanizing hub officially only has 122 public toilets, and in reality, most of them are not functional (Sanyal, November 05, 2016). Different studies also suggested that current situations of the public toilets in the city are unusable and unhygienic. Apart from a few good ones, most toilets have filthy floors, inadequate lighting and ventilation, and unbearable odor of human waste. Although unhygienic open defecation by men is a common scene in the city, for the woman it is not an option. While the city plans to construct a few, there still will be a huge need for public toilets to meet the demand of the vast population. It is critical to realize the challenges existing and evolving from the forbidding public hygiene situation and the lack of proper public infrastructure. Understanding the user group is crucial as modern and costly toilets end up being rejected than being used. Thus the paper tries to address the problems and suggests design strategies to achieve a feasible design solution for a sustainable public toilet that supports and empowers communal hygiene. The contribution of this paper is not only to promote a design solution but how this infrastructure can integrate with the surrounding urban context. A modular prototype is proposed which is adaptable, feasible, cost-effective, easy to erect, and can be plugged into any corner of the city. Rethinking public toilets as an adaptable prototype is not only about providing proper sanitation but also encouraging people about hygiene education, awareness, and innovation. The design is conceptualized as a prefabricated self-sustainable modular unit that can be altered, increased, or decreased as per the necessity of the surrounding area. 


2017 ◽  
Vol 1 (2) ◽  
Author(s):  
Liu Chenchen

Abstract: wetland is one of the three ecological systems, is sensitive to outside interference, the development of the city has many wetland resources are destroyed, a way of the construction of city wetland park is the protection and use of natural or artificial wetland resources, wetland ecological system optimization of the original building. At the same time to meet the leisure and recreation, science education the landscape space,reasonable use of the premise of protecting the ecological environment of wetland.


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