The Institute for Transportation at Iowa State University has released a report that identifies significant influencing factors to consider for future updates to the Iowa DOT’s Instructional Memorandum 3.213, which provides guidelines for determining the need for traffic barriers at secondary roadway bridges. Read the Report
AASHTO Journal, 5 August 2016 While Missouri Department of Transportation contractor crews were blasting old paint off a bridge built in 1955 to get it ready for a fresh paint job, they uncovered structural problems that will keep the structure in the state capital closed beyond the original schedule. The new repairs, MoDOT officials said July 29, “will delay…
The Connecticut Department of Transportation has released a report that establishes a single monitoring system comprised of sensors, data acquisition, and processing capabilities that can carry out long-term health monitoring of a highway bridge and bridge-weigh-in-motion system. Read the Report
The Illinois Center for Transportation at the University of Illinois has released a report that evaluates current bracing systems by using field instrumentation, finite element analysis, and the Torsional Analysis Exterior Girders program—a program used by bridge designers to design bracing systems to prevent exterior girder rotation. Read the Report
AASHTO Journal, 15 July 2016 Georgia Gov. Nathan Deal and South Carolina Gov. Nikki Haley jointly announced a partnership to share costs of an estimated $75 million project to replace Interstate 20 bridges over the Savannah River and the Augusta Canal, and to widen a portion of I-20 around the border. Georgia Department of Transportation Commissioner Russell McMurry and…
The Illinois Center for Transportation at the University of Illinois has released a report that explains the application of pre-soaked lightweight aggregates as a curing agent in concrete to reduce cracking due to drying shrinkage. Read the Report
The Louisiana Department of Transportation and Development has released a report that proposes new bridge pile driving formulas for pile capacity verification by using pile driving blow counts obtained at either end-of-initial driving or at the beginning-of-restrike. Read the Report
TRB’s Innovations Deserving Exploratory Analysis (IDEA) Highway Project 172: Bidirectional-Ductile End Diaphragms for Seismic Performance and Substructure Protection explores the applications of ductile diaphragms for use as a seismic-resistance solution for short and medium span steel bridges in all seismic regions. The research focused on applications for new bridge design, but the information could be applied to existing…
The Institute for Transportation at Iowa State University has released a report that investigates impacts of wheel-line spacing of dual-lane loads on the lateral load distribution on bridges by using finite element models. Read the Report
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
Fredericksburg Free Lance-Star, 14 June 2016 Scott Shenk The state’s new prioritization program became official Tuesday—and so did more than $200 million in funding for projects across the Fredericksburg region. After the Commonwealth Transportation Board (CTB) voted on the measure Tuesday in Richmond, state Transportation Secretary Aubrey Layne took a moment to say the group had…
AASHTO Journal, 10 June 2016 The Washington State Department of Transportation awarded a $115.9 million design-build contract to construct a “Direct Connector” flyover ramp in Renton that will address heavy congestion at the Interstate 405/SR 167 interchange. The agency said that will be the first Seattle-area project funded under the “Connecting Washington” revenue package the Legislature approved in 2015,…
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 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
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 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
KSL News, 10 March 2016 Jed Boal SALT LAKE CITY — It’s easy to take many of the basic engineering feats in American communities for granted. But something as simple as a footbridge can be a lifeline in other parts of the world. That’s why Josh Sletten, a UDOT engineer, decided to share his expertise to improve lives in…
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