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 Missouri Department of Transportation has released a report that determines the frequency and cause of resonant vibrations of truss verticals on a Missouri bridge by using instrumentation to monitor the vibrations of four verticals. 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
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…
Associated Press, 18 May 2016 LOUISIANA, Mo. • An old, narrow and deteriorating Mississippi River bridge at Louisiana, Missouri, may finally be replaced within the next few years, following two recent developments. The Federal Highway Administration last month approved a proposal to build a new Champ Clark Bridge 50 feet south of the existing one in Louisiana, a town of…
NC DOT News Release, 10 May 2016 First support piling installed; Will form foundation of new bridge RALEIGH – Governor Pat McCrory applauded a major milestone in replacing the Bonner Bridge on N.C. 12 crossing Oregon Inlet yesterday as the first piling was installed into Oregon Inlet that will form part of the foundation of the new bridge. “As…
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 11th International Bridge and Structures Management (BSM) Conference will cover a broad range of topics on bridge and transportation structures in all stages of implementation of asset management practices. Themes will include comprehensive implementation within and across organizations, establishing and monitoring asset management plans, performance measures for asset management, tools and technology to assist decision making, state of…
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
TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 489: Extending Bridge Service Life Through Field Welded Repairs and Retrofits documents practices associated with field welded repairs on existing steel bridges used by bridge owners. The information presented includes the extent to which field welding is performed on existing bridges, common types of field welded repairs and retrofits, specifications, and…
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…
On February 23, 2016, TRB’s Long-Term Bridge Performance (LTBP) Committee sent its sixth letter report to Gregory Nadeau, administrator of the Federal Highway Administration (FHWA). The committee provides advice and assistance on the conduct of the LTBP program, which is designed to collect research-quality data on a large representative sample of in-service U.S. highway bridges and to analyze…
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