The U.S. Federal Highway Administration has released a report that details development of a full-depth precast, ultra-high-performance concrete waffle deck panel that is suitable for field implementation. Read the Report
The National Transportation Safety Board (NTSB) has issued a preliminary report on the recent collapse of the Interstate 5 Bridge in Mount Vernon, Skagit County, Washington State. Read the Report
The Florida Department of Transportation has released a report that investigates wind wave crest lengths in coastal waters during tropical storms in order to compute wave loads on bridge superstructures and fishing piers. Read the Report
The Florida Department of Transportation has released a report that develops a framework and components of a risk model for hazards such as flooding, wildfires, and hurricanes. Read the Report
The Illinois Center for Transportation has released a study that explains its integral abutment bridge construction details, including field monitoring equipment for recently constructed bridges. Read the Study
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
The Center for Transportation Research at the University of Texas-Austin has released a report that evaluates Texas U-Beams including measurements of their concrete curing temperatures in square and skewed end blocks and establishment of the vertical shear capacity of their standard section loads.Read the Report Read the Report
The Institute for Transportation at Iowa State University has released a report that evaluates the feasibility of x-ray radiation, ground-penetrating radar, and magnetic flux leakage for detection and quantification of corrosion of embedded reinforcing steel. Read the Report
TRB’s National Cooperative Highway Research Program (NCHRP) Web-Only Document 197: Guidelines for the Load and Resistance Factor Design and Rating of Riveted and Bolted Gusset-Plate Connections for Steel Bridges explores the failure modes of steel truss bridge gusset plated connections. The report also includes a review of past literature on the strength of hot-driven rivets. The following appendices are…
The Florida Department of Transportation has released a report that discusses research programs that evaluate and quantify the effects of serviceability, behavior, and capacity of pretensioned concrete girders in different end region detailing schemes. Read the Report
The Center for Transportation Research at the University of Texas at Austin has released a report that discusses optimizing reinforcement in the cast-in-place concrete placed on bridge decks and identifying ways of controlling cracking in precast, pre-stressed bridge deck panels. Read the Report
TRB’s second Strategic Highway Research Program (SHRP 2) Renewal Project R06G has released a prepublication, non-edited version of a report titled Mapping Voids, De-bonding, Delaminations, Moisture, and Other Defects Behind or Within Tunnel Linings that identifies techniques that appear to provide useful information for evaluating tunnel linings. Read the Pre-publication
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
“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
The Louisiana Transportation Research Center has released a report that explores the viability of an advanced grid stiffened /fiber reinforced polymer tube encased concrete column as an alternate design for columns or piles. Read the Report
TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 440, Performance-Based Seismic Bridge Design (PBSD) summarizes the current state of knowledge and practice for PBSD. PBSD is the process that links decision making for facility design with seismic input, facility response, and potential facility damage. The goal of PBSD is to provide decision makers and stakeholders with data that will…
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…
The Reason Foundation has released a report that discusses the condition of the United States’ roads and bridges based on data from the Highway Performance Monitoring System, the National Bridge Inventory, the Fatal Accident Reporting System, and the Texas Transportation Institute’s reports on urban congestion. Read the Report
On February 19, 2013, TRB’s Long-Term Bridge Performance (LTBP) Committee sent its third letter report to Victor Mendez, 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 these…
TRB’s second Strategic Highway Research Program (SHRP 2) has released a project brief that summarizes SHRP 2 Renewal projects that are designed to help transportation agencies deal with the unique challenges that rapid highway renewal techniques present. The brief describes tools that agencies can use to mitigate worker and manager fatigue, develop and apply performance specifications, manage risk and…
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