Inspection

Mackinac Bridge in Michigan; bridge monitoring sensors

Image: Justin Billau [CC BY-SA 2.0] via Wikimedia Commons

News March 12, 2019
Researchers in the state of Michigan are planning to install up to 2,000 infrastructure sensors on the Mackinac Bridge in order to explore the logistics of a large-scale deployment and provide useful monitoring data to the Mackinac Bridge Authority (MBA).    According to a press release from the...
UAV drones
News April 26, 2018
The Arizona Department of Transportation (ADOT) is adding unmanned aerial vehicles (UAVs) to help its engineering staff safely and more efficiently inspect bridges and perform surveying work along state highways.   Through a federal innovative technology grant, ADOT has eight new aerial drones that...
News February 29, 2016
A rockslide shut down both northbound and southbound lanes of I-75 in Campbell County, Tenn. The highway, located approximately 30  miles from the Kentucky border, will likely be closed for weeks to come as crews clean up debris that fell onto the road.   Environmental factors like a recent...
News January 15, 2016
Washington Gov. Jay Inslee ordered Seattle Tunnel Partners (STP) to halt all tunneling activity at the $3.1 billion Alaskan Way Viaduct replacement project in Seattle after a 35-ft-long sinkhole appeared earlier this week.   The order to stop all tunneling work reflects a shift from the state’s...
News September 29, 2015
The Indiana Department of Transportation (INDOT) started an investigation into whether or not the pavement in nearly 200 road projects could fall apart more than a decade earlier than expected.   Will Wingfield, INDOT spokesman, said the agency is investigating whether enough asphalt binder—which...
Article March 26, 2010
To summarize the first article (see On the flyover, February 2010), citing a study done in 1977 as motivation, development work began in 1995 on a thermal infrared (IR) system to surpass the existing bridge nondestructive evaluation technology of that day. That 1995 technology effort has now been...
Article June 09, 2009
A crack has created a break in the routine for Illinois Department of Transportation bridge inspectors. An annual checkup of the I-80 bridge, which reaches across the Mississippi River near the Quad Cities, revealed a crack in one of the floor beams holding the eastbound lanes. After officials...
Article May 11, 2009
The collapse of the I-35W Bridge in Minneapolis in August 2007 briefly diminished public confidence about the nation’s aging infrastructure. Among engineers and lawmakers alike, questions emerged as to whether other pieces of America’s infrastructure would soon fail, whether it had the funding and...
Article March 16, 2009
The New Jersey Turnpike Authority (NJTA) owns and operates the New Jersey Turnpike and the Garden State Parkway and is dedicated to the safe, efficient movement of people, goods and information on one of the nation’s largest and busiest toll-road systems. NJTA is responsible for the inspection and...
Article January 28, 2009
In the next 18 months, the Massachusetts Port Authority’s (Massport) Tobin Memorial Bridge will be the state’s first bridge to have a wireless high-tech structural health monitoring system (SHM) in place to monitor stresses and strains in a real-time environment. The Tobin Bridge will be one of...
Article May 14, 2008
Tennessee emerged from a January MSNBC analysis as one of only four states to have all its bridges inspected on schedule. MSNBC analyzed federal records for the National Bridge Inventory, which included inspections up to 2006, and reported at least 17,000 bridges in the U.S. went more than two...
Article November 16, 2007
On Aug. 2, just one day after the I-35W Bridge collapse in Minneapolis, the Federal Highway Administration issued a technical advisory urging departments of transportation and other bridge owners to conduct immediate inspections of all steel-deck truss bridges with fracture-critical members, even...
Article October 12, 2007
More than 77,000 bridges in the U.S. are rated structurally deficient by Federal Highway Administration (FHWA) standards. Unfortunately, bridge owners have not objectively separated the truly dangerous bridges—like the collapsed I-35W in Minnesota—from those with less severe issues to improve...
Article November 01, 2006
The Hale Boggs Bridge in Luling, La., built in the early 1980s, was one of the first in a wave of new cable-stayed bridges opened in the U.S. over the past 25 years. In 2002, after maintenance records and an initial investigation showed some flaws in the stay-cable corrosion protection system,...
Article November 01, 2006
Rapid advances in technology are dramatically changing the way bridge surveyors and engineers perform their tasks and conduct their business. The most recent technological innovation is the use of high-definition scanners that combine digital photography and laser measurement to develop a three-...
Article February 10, 2005
Many steel bridges have reached or exceeded their original design life as a result of aging and accumulated stress cycles. The structures have succumbed to increasing traffic volume and weight and deteriorating components. Replacing them or performing major retrofits is extremely costly and often...
Article June 19, 2002
The Kosciuszko Bridge (pronounced kosh-’chush-(“)ko) is a steel and concrete structure approximately 4,000 ft in length that connects the boroughs of Queens and Brooklyn. The bridge carries the Brooklyn-Queens Expressway with six lanes of traffic 140 ft above Newtown Creek. The Kosciuszko Bridge is...
Article November 28, 2001
The contractor has to warranty his work anyway, right? The reason is that certified independent inspection services can save hundreds or even thousands of times their cost by ensuring that the job is done right—which can translate into many years of extra life. Here’s an example of how inspection...
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