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
AASHTO Journal, 21 June 2013 State officials from Indiana and Kentucky joined federal officials and community members Tuesday to celebrate the groundbreaking of the Ohio River Bridges Project’s Downtown Crossing, which will provide a new link over the Ohio River for the two states. The $1.3 billion project will include a new bridge that will carry six lanes of…
AASHTO Journal, 21 June 2013 The Louisiana Department of Transportation and Development this week opened to traffic the Huey P. Long Bridge in New Orleans four months ahead of schedule and under budget after completing a $1.2 billion widening project that began in 2006. “Today we celebrate the rebirth of a great bridge, which symbolizes the continued rebirth of…
The Illinois Center for Transportation at the University of Illinois has released a report that describes development of Illinois-specific design procedures for drilled shafts founded in weak shale.as a way to reduce costs for bridges as a way to reduce costs for bridges. Read the Report
The Mountain-Plains Consortium, part of the Upper Great Plains Transportation Institute at North Dakota State University, Fargo, has released a report that describes attempts to establish the S-N curve for fatigue loading of notched wood-concrete connections, all based on repeated loading tests. Read the Report
The Illinois Center for Transportation at the University of Illinois has released a report that validates and calibrates the Illinois’s Department of Transportation implementation of design practice for its earthquake resisting system. Read the Report
The U.S. Federal Highway Administration has released a tech brief that provides guidance for grout sampling, testing, data analysis, and interpretation of results. Read the Technical Brief
TRB’s second Strategic Highway Research Program (SHRP 2) has released a project brief that provides an overview of SHRP 2 Project R04: Innovative Bridge Designs for Rapid Renewal, which developed standardized approaches to designing and constructing complete bridge systems. SHRP 2 Project R04 created the SHRP 2 Accelerated Bridge Construction (ABC) Toolkit, which includes recommended design standards and design…
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
AASHTO Journal, 31 May 2013 Minnesota and Wisconsin departments of transportation officials joined local community members Tuesday to officially begin construction on the St. Croix Crossing project that will replace the 80-year-old structurally deficient and over-capacity Stillwater Lift Bridge, which connects Stillwater and Oak Park Heights in Minnesota with St. Joseph, Wisconsin. MnDOT announced last fall that the project,…
AASHTO Journal, 24 May 2013 The Federal Highway Administration announced last week it will soon be utilizing a new innovative technology to gauge the safety and structural integrity of bridges while saving time and money: a robot. The new tool, created through a partnership between FHWA and Rutgers University Center for Advanced Infrastructure and Transportation, combines multiple advanced scans…
TRB’s National Cooperative Highway Research Program (NCHRP) Innovations Deserving Exploratory Analysis (IDEA) Final Report for NCHRP-IDEA Project 155: Corrosion Resistant, Structurally Reinforced, Thermal Spray Coatings for In Situ Repair of Load Bearing Structures addresses the potential use of high-velocity thermal spray for in-situ reclamation of corroded components in load bearing infrastructures. Read the Report
TRB’s National Cooperative Highway Research Program (NCHRP) Innovations Deserving Exploratory Analysis (IDEA) Final Report for NCHRP-IDEA Project 153: Bridge Retrofit Laser System addresses development of an advanced laser measurement system to accelerate the bridge retrofit process in order to reduce the time between identification of repair needs for resumption of service for a bridge. Read the Report
This course is an abbreviated presentation of 135046 Stream Stability and Scour at Highway Bridges. The course provides an understanding of and assistance in detecting hydraulic-related problems at highway bridges. The effects of stream instability, scour, erosion, and stream aggradation and degradation are covered. Countermeasures to these problems are discussed. This course concentrates on visual keys to detecting scour…
Tom Warne Report, 14 May 2013 KGO News – May 8, 2013 TREASURE ISLAND, Calif. – Caltrans has found a solution on how to fix the broken bolts on the Bay Bridge, but unfortunately it will not be cheap. The agency announced this week that it will cost between $5 million and $10 million to fix the problems with…
Tom Warne Report, 18 May 2013 Associated Press – May 14, 2013 SACRAMENTO, Calif. – The San Francisco-Oakland Bay Bridge’s $6.3 billion eastern portion “has a fighting chance” of opening by the end of the year, in spite recent structural concerns, officials overseeing the construction reported Tuesday. State lawmakers grilled officials in charge of the project and their decision…
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
AASHTO Journal, 26 April 2013 The American Association of State Highway and Transportation Officials has released interim revisions to the AASHTO LRFD Bridge Design Specifications, 6th Edition.The new interim includes revisions to five of the 15 sections of the current LRFD Bridge Design Specifications: Concrete Structures, Steel Structures, Aluminum Structures, Buried Structures and Tunnel Liners, and Railings. The 184-page…
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
Concrete Repair Bulletin, March / April 2013 International Concrete Repair Institute Article by Lorella Angelini According to the National Bridge Inventory, there are more than 600,000 highway bridges in the United States. Most of these bridges (98%) are owned by state and local governments, whereas the remaining 2% are federally or privately owned. The average age of these bridges…
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
TRB’s National Cooperative Highway Research Program (NCHRP) Synthesis 441: High Performance Concrete Specifications and Practices for Bridges documents the types of specifications and practices used by state transportation agencies to produce high performance concrete for bridges. The report also identifies specifications and practices reported as having improved concrete performance and those that have been less successful. Read the NCHRP Synthesis…
Crain’s Detroit Business, 12 April 2013 Artist’s rendering of the New International Trade Crossing bridge as seen from the Windsor side. Gov. Rick Snyder today called the $2.1 billion New International Trade Crossing a gateway for “jobs today and tomorrow” after the U.S. Department of State issued a key permit for what would be a second bridge over the…
AASHTO Journal, 12 April 2013 Rhode Island Department of Transportation officials joined Gov. Lincoln Chaffee last week to announce the launch of an I-95 bridge preservation program that will help to keep the bridges on the interstate in good shape for a longer period of time, ultimately saving taxpayer dollars. RIDOT said the program’s goal is to “address issues…
“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
TRB’s second Strategic Highway Research Program (SHRP 2) Renewal Project R19A has released a prepublication, non-edited version of a report titled Design Guide for Bridges for Service Life that provides information and defines procedures to systematically design new and existing bridges for service life and durability. Read the Pre-publication
The New Zealand Transport Agency has released a report that presents an assessment of the New Zealand pre-tensioned concrete bridge stock and identifies bridges at risk of pre-tensioned reinforcement corrosion. Read the Report
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