The Florida Department of Transportation has released a report that considers the behavior of twin steel box-girder bridges and develops methods for evaluating their redundancy level in fractures of one tension member. Read the Report
The California Department of Transportation has released a report that discusses a crash test of a modified barrier that was designed to meet new crash test guidelines for longitudinal barriers. Read the Report
The U.S. Federal Highway Administration has released a report that reviews the state-of-the-art of bridge condition indices used to assess performance of bridges in the United States and other countries. Read the Report
The Institute for Transportation at Iowa State University has released a report that provides guidance on the allowable speeds for trucks permitted vehicles on bridges. Read the Report
The Center for Transportation Research at the University of Texas at Austin has released a report that investigates the use of post-installed shear connectors for strengthening non-composite continuous steel girder bridges that have strength deficiencies in the positive and the negative moment regions. Read the Report
The Center for Transportation Research at the University of Texas at Austin has released a report that outlines the laboratory testing, field monitoring, and parametric computational modeling that provides data on elastomeric bearings on bridges. Read the Report
New nondestructive testing technologies are available to help transportation agencies inspect concrete bridge decks or tunnel linings more quickly and comprehensively. Information about Nondestructive Testing for Concrete Bridge Decks and Tunnel Linings (R06 A/G) is now available on the SHRP2 website. The Nondestructive Testing for Concrete Bridge Decks and Tunnel Linings web page features everything from PowerPoint presentations and…
The Institute for Transportation at Iowa State University has released a report that investigates the feasibility of internal curing as a means to promote hydration of Portland cement concretes on bridge decks. Read the Report
The Virginia Department of Transportation has released a report that describes the use of electrochemical chloride extraction as a means to remove chlorides from reinforced concrete structures that are deteriorating because of corrosion. Read the Report
The Institute for Transportation at Iowa State University has released a report that considers the performance of terrestrial laser scanners as a means to automatically detect cracks when carrying out bridge structural condition assessments. Read the Report
The Institution for Transportation at Iowa State University has released a report that investigates possibilities for decreasing the construction time of bridge deck overlays, which involves replacing the deteriorated part of the deck so as to extend bridge life. Read the Report
The University of Illinois Center for Transportation has released a report that assesses the practice of timber pile retrofitting; investigates load rating and fiber reinforced polymers (FRP) retrofitting of abutment timber piles; and considers the long-term performance of FRP-wrapped timber piles. Read the Report
The Virginia Department of Transportation has released a report that investigates the effectiveness of shrinkage-compensating concrete using Type K expansive cement in reducing cracks in bridge decks. Read the Report
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
The Louisiana Department of Transportation and Development has released a report that discusses the application of high-strength composites, such as carbon fiber reinforcements, to repair bent cap suffered extensive damage at the girder bearing locations. Read the Report
The Mountain-Plains Consortium at North Dakota State University has released a report that discusses an instrumentation package for structural health monitoring of bridges subjected to overweight trucks and plans for field deployment of the instrumentation. Read the Report
The Florida Department of Transportation has released a report that describes the development of a revised barge impact probability expression that is applicable for the design of bridge structures. Read the Report
The Louisiana Department of Transportation and Development has released a report that discusses the construction of two integral abutment bridges on soft and stiff soils, including field instrumentation plans and monitoring results for the bridges. Read the Report
The Virginia Department of Transportation has released a report that investigates the effectiveness of lightweight concrete—a material with properties including a lower modulus of elasticity, higher inelastic strains, a lower coefficient of thermal expansion—in reducing cracks in bridge decks. Read the Report
The U.S. Federal Highway Administration has released a report that evaluates the service limit state design and analysis of engineered fills for bridge support. Read the Report
The Virginia Department of Transportation has released a report that investigates the effectiveness of shrinkage reducing admixtures in concrete as a means to alleviate cracks in bridge decks. Read the Report
The Florida Department of Transportation has released a report that assesses the load and resistance design resistance factors for methods used in augercast on in-situ piles on bridges. Read the Report
The Institute for Transportation at Iowa State University has released a report that explores high-strength bolt-tightening and verification techniques for bridges and investigates the feasibility of developing and implementing new techniques. Read the Report
The University of Minnesota’s Center for Transportation Studies has released a report that explores data-driven numerical simulations of 100- and 500-year flood events on the Mississippi River. Read the Report
The Louisiana Department of Transportation and Development has released a report that discusses testing protocols for pre-boring—a method used in the construction of highways and bridges to facilitate the driving of displacement piles through hard/dense soils. Read the Report
The New Zealand Transport Agency has released a report that investigates the occurrence and corresponding maintenance costs associated with vehicle strikes on W-beam and wire rope barrier installations on on bridges. Read the Report
The Mineta Transportation Institute at San Jose State University has released a report that discusses the state of the art for construction and operation of long tunnels used for high-speed rail. Read the Report
The Virginia Department of Transportation has released a report that investigates cost-effective and aesthetic self-consolidating concrete mixtures for use in bridge beams and pier caps. Read the Report
The U.S. Federal Highway Administration has released a report that evaluates the service limit state of the design and analysis used for engineered fills for shallow foundation bridge supports. Read the Report
American Road & Transportation Builders Association 18 February 2016 National & State Data Available: www.artbabridgereport.org (WASHINGTON)—There’s good news and bad news to report about the condition of America’s bridges. The good news is there were 2,574 fewer structurally deficient bridges in 2015 compared to the number in 2014. The bad news is there are still 58,500 on the structurally…
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