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Category: Treatments

A Programmatic Approach to Long-Term Bridge Preventive Maintenance

2017-04-04
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| Categories: Bridge Design/Const., Bridge Pres. Apps., New Technology, News, Studies / Reports, Treatments

State transportation agencies use cost-effective preventive maintenance (PM) programs to preserve existing roadway systems, slow down their deterioration, and improve their functional condition. Currently, the Kentucky Transportation Cabinet’s (KYTC’s) bridge inventory includes approximately 10,000 structures, and by 2018, most of these structures will have been in use for at least 50 years. Because there is insufficient funding available to…

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Evaluation of Bridge Decks Using Non-Destructive Evaluation at Near Highway Speeds for Effective Asset Management

2016-10-21
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| Categories: Bridge Design/Const., Bridge Pres. Apps., New Technology, News, Treatments

The Michigan Department of Transportation has released a report that discusses a pilot project pertaining to the detection, quantification, and visualization of bridge deck distresses through the use of remote sensing techniques. The report can be downloaded in three separate parts. Read the Report

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Investigation of Premature Strip Seal Joint Failures and Recommendations for Assuring Proper Strip Seal Joint Installation: Bridge 5/104W

2016-09-08
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| Categories: Bridge Design/Const., Bridge Pres. Apps., New Technology, News, Studies / Reports, Treatments

The Washington State Department of Transportation has released a summary of an investigation that was performed to identify the causes of premature failures of strip seal expansion joints that were installed on a bridge in Washington State. Read the Investigation Summary

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Preservation programs grow as state DOTs battle challenging bridge conditions

2016-05-23
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| Categories: Bridge Design/Const., Bridge Pres. Apps., Data/Statistics, Legislative / Political, New Technology, News, Treatments

Better Roads, 19 May 2016 Chris Hill   The truth is, while there are still a relatively large number of structurally deficient bridges across the country, roughly 58,500, that figure has dropped in recent years. It’s still not good, as the American Road & Transportation Builder’s Association estimates with current funding levels, it would take 21 years to replace…

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Investigation of Techniques for Accelerating the Construction of Bridge Deck Overlays

2016-05-13
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| Categories: Bridge Design/Const., Bridge Pres. Apps., General News, New Technology, News, Studies / Reports, Treatments

The Institute for Transportation at Iowa State University has released a report that considers techniques for reducing the construction time of bridge deck rehabilitation so as to reduce the socioeconomic costs associated with the inconveniences caused to travelers. Read the Report

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Mississippi DOT Recalls Major Bridge Work After Katrina, Rebuilding of US 90

2015-08-28
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| Categories: Bridge Design/Const., Bridge Pres. Apps., General News, Legislative / Political, New Technology, News, Pavement Design/Const., Pavement Pres. Apps., Treatments

AASHTO Journal, 28 August 2015 At the 10th anniversary of Hurricane Katrina, the Mississippi Department of Transportation is recalling how the storm left more than $1 billion in damages to the state’s transportation infrastructure, including destruction of two major bridges crossing bays along the Gulf Coast. The agency has also highlighted the rebuilding efforts it launched to bring the…

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Behavior of the Splice Regions of Spliced I-Girder Bridges

2015-04-23
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| Categories: Bridge Design/Const., Bridge Pres. Apps., General News, New Technology, News, Studies / Reports, Treatments

The Center for Transportation Research at the University of Texas at Austin has released a report that describes a research program developed to study cast-in-place (CIP) splice regions of spliced I-girders, practices that have been implemented in CIP splice regions, and design recommendations based on the structural performance of spliced I-girder specimens. Read the Report

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RFP: Acceptance Criteria of Complete Joint Penetration Steel Bridge Welds Evaluated Using Enhanced Ultrasonic Methods

2014-10-02
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| Categories: Bridge Design/Const., Bridge Pres. Apps., New Technology, News, Treatments

TRB’s National Cooperative Highway Research Program (NCHRP) has issued a request for proposals to develop guidelines to evaluate complete joint penetration welds in steel bridges based on updated acceptance criteria. Proposals are due November 18, 2014. Read the RFP

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NYSDOT Uses Magnesium Aluminum Liquid Phosphate (MALP) for Concrete Bridge Deck Patching

2014-09-29
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| Categories: Bridge Design/Const., Bridge Pres. Apps., Journals/Publications, New Technology, News, Treatments

“Constructioneer”, August, 2014 Bridge maintenance and construction materials officials from Region 9 of the New York State Department of Transportation (NYSDOT) are evaluating non-Portland cement based concrete repair technology that was applied in a mid-June demonstration in Maine, New York, a community of 5,400 people in Broome County. Using a repair product based on magnesium aluminum liquid phosphate (MALP)…

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Super-Weathering Steel for Infrastructure Applications

2014-07-08
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| Categories: Bridge Design/Const., Bridge Pres. Apps., New Technology, News, Studies / Reports, Treatments

TRB’s National Cooperative Highway Research Program (NCHRP) Innovations Deserving Exploratory Analysis (IDEA) Final Report for NCHRP-IDEA 160: Super-Weathering Steel for Infrastructure Applications explores the development of new, low-cost steels with better weathering characteristics than those of current weathering steels. Project: Project Information Project Number: 20-30/IDEA 160 Read the Report

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Diffusion vs. Concentration of Chloride Ions in Concrete

2014-07-07
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| Categories: Bridge Design/Const., Bridge Pres. Apps., General News, New Technology, News, Pavement Design/Const., Pavement Pres. Apps., Studies / Reports, Treatments

The Florida Department of Transportation has released a report that considers the long-term durability of reinforced concrete structures with external chloride concentrations different than those at the permanently immersed, tidal, and splash zones of partially-immersed bridges. Read the Report

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LOI: Extending Bridge Service Life through Field Welded Retrofits

2014-05-28
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| Categories: Bridge Design/Const., Bridge Pres. Apps., New Technology, News, Treatments

TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis Program has issued a request for letters of interest to synthesize field welding solutions and techniques that have been used successfully on existing bridges. Information on consultants letters of interest, qualifications, and the submission process are available online at http://www.trb.org/SynthesisPrograms/NewTopicsNCHRP.aspx Letters of interest are due by August 15, 2014. Read Additional…

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Bridges for Service Life Beyond 100 Years: Innovative Systems, Subsystems, and Components

2014-05-20
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| Categories: Bridge Design/Const., Bridge Pres. Apps., New Technology, News, Studies / Reports, Treatments

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-R19A-RW-1: Bridges for Service Life Beyond 100 Years: Innovative Systems, Subsystems, and Components develops approaches and procedures to enhance service life design for existing and new bridges. Read the Report

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Investigation of Corrosion and Other Deterioration Effects in Highway Bridge Components Using Nondestructive Testing Technology of Acoustic Emission

2014-04-09
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| Categories: Bridge Design/Const., Bridge Pres. Apps., New Technology, News, Studies / Reports, Treatments

The Eastern Seaboard Inter-modal Transportation Applications Center at Hampton University has released a report that explains how acoustic emission monitoring can be used to assess corrosion and other deterioration in highway bridges so as to perform maintenance, rehabilitation, and repair. Read the Report

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“The Maintenance Manager”, Fall 2013

2013-12-03
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| Categories: Bridge Design/Const., Bridge Pres. Apps., Courses/Seminars, Equipment, Journals/Publications, Legislative / Political, New Technology, News, Pavement Design/Const., Pavement Pres. Apps., Treatments

AASHTO’s quarterly maintenance newsletter is now available.  The newsletter contains information related to: Equipment Technical Working Group Highway Safety and Reliability Technical Working Group Bridge Technical Working Group Pavements Technical Working Group Roadway / Roadsides Technical Working Group ACPA, ISSA, and SSPC Web-based Training Opportunities Maintenance Leadership Academy Federal Funds for In-House Work Survey 2014 Summer Meeting Information Download…

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Utilization of Mobile LIDAR to Verify Bridge Clearance Heights on the Western Kentucky Parkway

2013-09-05
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| Categories: Bridge Design/Const., Bridge Pres. Apps., General News, New Technology, News, Pavement Design/Const., Pavement Pres. Apps., Studies / Reports, Treatments

The Kentucky Transportation Center at the University of Kentucky has released a report that explains how mobile light detection and ranging (LIDAR) was used to obtain bridge clearance heights, which can vary and can be difficult to measure due to high traffic volume. Read the Report

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Application Process Now Open for Round 2 of SHRP2 Implementation Assistance Program

2013-08-06
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| Categories: Bridge Design/Const., Bridge Pres. Apps., General News, New Technology, News, Pavement Design/Const., Pavement Pres. Apps., Treatments

AASHTO Journal, 5 August 2013 The American Association of State Highway and Transportation Officials and the Federal Highway Administration announced today that applications for the second round of the second Strategic Highway Research Program (SHRP2) Implementation Assistance are officially being accepted. In an email sent to the chief executive officials of the state departments of transportation, AASHTO and FHWA…

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Legal Aspects of Performance-Based Specifications for Highway Construction and Maintenance Contracts

2013-07-29
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| Categories: Bridge Design/Const., Bridge Pres. Apps., General News, Journals/Publications, Legislative / Political, News, Pavement Design/Const., Pavement Pres. Apps., Treatments

TRB’s National Cooperative Highway Research Program (NCHRP) Legal Research Digest 61: Legal Aspects of Performance-Based Specifications for Highway Construction and Maintenance Contracts explores how performance-based specifications differ from traditional design or method-based specifications and the risk allocation differences between the these methods. Read NCHRP Legal Research Digest 61

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Precast Concrete Pavement Technology

2013-06-05
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| Categories: Bridge Design/Const., Bridge Pres. Apps., General News, New Technology, News, Pavement Design/Const., Pavement Pres. Apps., Studies / Reports, Treatments

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-R05-RR-1: Precast Concrete Pavement Technology reviews the available precast concrete pavement (PCP) systems; summarizes PCP applications; and offers suggested guidelines for the design, fabrication, installation, and selection of PCP systems. Read the Report

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International Grooving & Grinding Association (IGGA) Concrete Impressions

2013-04-30
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| Categories: General News, Journals/Publications, News, Pavement Design/Const., Pavement Pres. Apps., Treatments

APRIL 2013 Caltrans Creates New Specification for Construction of Quiet Bridge Deck Surfaces Noise from bridges is an ongoing problem along U.S. highway systems, and efforts at noise mitigation can be costly as well as time-consuming. For example, sound walls, which work by interrupting the pathway between a noise source and the receiver, are often constructed along bridges that…

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Slope Failure Investigation Management System

2013-04-19
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| Categories: Bridge Design/Const., Bridge Pres. Apps., General News, New Technology, News, Pavement Design/Const., Pavement Pres. Apps., Studies / Reports, Treatments

The Maryland State Highway Administration has released a report that presents a framework for developing a system that tracks, records, evaluates, analyzes, and reviews soil slope failure and remediation data by using a GIS database and a collective overlay of maps. Read the Report

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Cracked concrete: A fix-it-first warning for Olympia[, Washington]

2013-04-12
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| Categories: Bridge Design/Const., Bridge Pres. Apps., Data/Statistics, General News, Legislative / Political, New Technology, News, Pavement Design/Const., Pavement Pres. Apps., Studies / Reports, Treatments

“Crosscut Public Media”, 12 April 2013 If state lawmakers want us to weigh in on a proposal (and taxes) to fund new transportation projects, they better make sure the plan includes fixing our crumbling roads and bridges. Read the Article by Douglas B. MacDonald, Washington State Secretary of Transportation, 2001-2007     

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2013 ASCE Report Card Links Underinvestment to Deteriorating Infrastructure

2013-03-19
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| Categories: Bridge Design/Const., Bridge Pres. Apps., Data/Statistics, Featured, General News, Journals/Publications, Legislative / Political, New Technology, News, Pavement Design/Const., Pavement Pres. Apps., Studies / Reports, Treatments

AASHTO News, 19 March 2013 WASHINGTON, D.C. — The American Association of State Highway and Transportation Officials (AASHTO), commends the American Society of Civil Engineers (ASCE) for its comprehensive assessment of the nation’s current infrastructure conditions and needs. The 2013 Report Card finds that inadequate investment has resulted in deteriorating U.S. infrastructure. “This Report Card accentuates the need for a…

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