The Illinois Center for Transportation at the University of Illinois has released a report that summarizes its process for validating and calibrating the quasi-isolated earthquake warning systems on highway bridges. Read the Report
TRB’s National Cooperative Highway Research Program (NCHRP) Legal Research Digest 61: Legal Aspects of Performance-Based Specifications for Highway Construction and Maintenance Contracts explores how performance-based specifications differ from traditional design or method-based specifications and the risk allocation differences between the these methods. Read NCHRP Legal Research Digest 61
The Virginia Department of Transportation has released a report that evaluates the construction, condition, and cost of Rosphalt overlays (a proprietary asphalt additive) placed on bridges in Virginia. Read the Report
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 U.S. Federal Highway Administration has released a report that documents the research, development, and deployment of ultra-high performance concrete components within the U.S. highway transportation infrastructure. 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
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…
AASHTO Journal, 21 June 2013 Rep. Nick Rahall (D-WV), ranking member of the House Committee on Transportation and Infrastructure, joined Rep. Peter DeFazio (D-OR) and Rep. Rick Larsen (D-WS) to introduce a bill this week that would provide $5.5 billion for state transportation departments to address the 150,000 or so structurally deficient bridges across the nation. “Congress simply cannot…
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…
Tom Warne Report, 9 June 2013 Sacramento Bee – May 30, 2013 Questions over corroded tendons, broken bolts and bad welds facing transportation officials over the San Francisco-Oakland Bay Bridge led to the announcement this week that the scheduled opening on Labor Day weekend would not be confirmed until July. Bay Area Toll Authority commissioners said officials are now…
AASHTO Journal. 7 June 2013 A Senate Appropriations panel, chaired by Sen. Patty Murray (D-WA), will hold a hearing next Thursday to examine the collapse of the I-5 bridge, which occurred May 23 just north of Seattle. The hearing will also consider that incident in the context of the overall status of the nation’s transportation infrastructure issues. Two witnesses are currently…
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, 31 May 2013 A highway overpass in southeast Missouri collapsed early Saturday morning after a Union Pacific freight train and a BNSF freight train collided underneath, causing several rail cars to derail and smash into the bridge. “The damage is very extensive,” Missouri Department of Transportation engineer Mark Shelton told the Associated Press. “We’re going to end…
Tom Warne Report, 26 May 2013 Sacramento Bee – May 19, 2013 SAN FRANCISCO – The rising cost of the $6.5 billion San Francisco-Oakland Bay Bridge could skyrocket with the discovery of cable problems in addition to the bolt and rod issues previously detected. New concerns have surfaced on the skyway approach to the suspension span, where rain and…
Tom Warne Report, 26 May 2013 Associated Press – May 21, 2013 OLYMPIA, Wash. – Gov. Jay Inslee signed an $8.7 billion transportation budget this week that sends money to road maintenance and continues financing for existing major projects in the state. A legislative compromise on the controversial Columbia River Crossing Project was cut out of the budget by…
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…
AASHTO Journal, 24 May 2013 Washington State Department of Transportation officials and local emergency response rescuers were pressed into action late Thursday when a portion of an Interstate 5 bridge located near Mount Vernon, about an hour north of Seattle, apparently collapsed, sending vehicles into the Skagit River below. There were no reports of fatalities from the incident. WSDOT…
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…
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