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January 26, 2015
LEAP Bridge Steel is a comprehensive 3-D steel bridge design and rating program that offers advanced physical 3-D bridge modeling, design, analysis and load rating of everyday steel bridges, following AASHTO LRFD standards. Bentley’s LEAP Bridge Steel provides an intuitive user interface and...
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January 21, 2015
When the old Hopple Street Bridge collapsed late Monday night, many said it would take days to reopen I-75 in Cincinnati. Wednesday morning, traffic was moving through the corridor and all of the debris from the accident was cleared from the scene.
The Cincinnati Police Department and the Ohio...
Bridges
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January 20, 2015
The Hopple Street Bridge over I-75 in Cincinnati has collapsed, killing one.
On Tuesday morning, officials were on the scene trying to determine exactly what went wrong during the demolition process of the northbound off-ramp, and the Occupational Safety and Health Administration has opened up an...
Bridges
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January 06, 2015
The Federal Highway Administration (FHWA) participated in the ceremonial launch of the new Sarah Mildred Long Bridge spanning the Piscataqua River between Maine and New Hampshire. The project, estimated to cost $170 million, relies on $25 million from the U.S. DOT’s Transportation Investment...
Bridges
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December 29, 2014
Download our 2015 Calendar of Events from our website or email ihoward@usbridge for single or multiple hard copies. Aside from featuring a variety of U.S. Bridge installation photos including different styles and finishes, the 2015 Calendar of Events contains not only a list of industry events but...
Bridges
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December 23, 2014
Falling snow is difficult enough to deal with out on the road. In Ohio on I-280, motorists also have to watch for falling ice.
Since its opening, the Veterans’ Glass City Skyway over the Maumee River in Toledo, Ohio, has been closed three times due to the frozen hazard, but the Ohio DOT believes...
Bridges
Article
December 08, 2014
Florida continues to invest in its transportation system to ensure that the infrastructure can meet the needs of residents, visitors and businesses.
While Floridians and the nearly 100 million tourists that visit our state each year actually experience this infrastructure, others throughout the...
Bridges
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November 26, 2014
U.S. Bridge’s robust website is an informational, intelligent and interactive bridge and associated services portal for engineers, contractors and owners/developers. The site is available in both English and Spanish.
According to Dan Rogovin, president of U.S. Bridge, “We have totally redesigned...
Bridges
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November 26, 2014
Kittery, Maine and Portsmouth, N.H. are about to become truly connected, following the announcement of a formal agreement between the Maine Department of Transportation (MaineDOT) and Cianbro Corporation (Pittsfield, Maine) to construct the new Sarah Mildred Long Bridge.
The precast segmental...
Bridges
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November 21, 2014
In McCall, Idaho, the North Fork Payette River plays out into Payette Lake after miles upon miles of winding rapids and craggy passes. Above this outlet, the New Lardo Bridge, running off Idaho 55, which replaces the 83-year-old Lardo Bridge on the southwest shore of Payette Lake, is set to makes...
Bridges
Article
November 13, 2014
With more than 12,800 bridges comprising 100 million sq ft of deck area, Louisiana has a very unique and complex bridge system.
Our current inventory contains approximately 10% structurally deficient and 14% functionally obsolete bridges, many of which are off the state system. We rank first in...
Bridges
Article
November 13, 2014
When putting together a complicated 3-D puzzle, you really cannot build around a missing piece.
As FIGG and PCL Civil Constructors were attempting to mold together the first pier table of the I-91 Brattleboro Bridge in Vermont in late October, extreme measures were being taken to make sure...
Bridges
Article
November 13, 2014
Postal delivery workers aren’t the only ones who work year-round in all conditions.
The crews of Kiewit Infrastructure West working on the Northern Rail Extension Phase 1A to build a 3,300-ft-long bridge over the Tanana River in Salcha, Alaska, worked nonstop to complete the project by the...
Bridges
Article
November 13, 2014
When it came time to replace the Henry G. Gilmerton Bridge in the Hampton Roads region of Virginia in 2009, the project team had very strict parameters to work within. The span is one of five critical crossing points for the Elizabeth River in the region, resulting in major vehicle and boat traffic...
Bridges
Article
November 13, 2014
The North Torrey Pines Road Bridge, built in 1933, was classified as structurally and seismically deficient in 1990, receiving a sufficiency rating of only 19 out of 100. To extend the bridge and bring it up to current seismic standards, the design, engineering and construction teams had to contend...
Bridges
Article
November 13, 2014
Downtown Louisville is home to an intersection of three interstate systems, I-65, I-64 and I-71, and three corresponding bridges taxed to capacity. With a congested downtown area leading to frequent traffic delays and collisions, the city of Louisville knew that a new solution was necessary for...
Bridges
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November 13, 2014
Brian Mazzeo (left) and W. Spencer Guthrie have been working with noninvasive substances for bridge inspection methodology. Here they demonstrate the water droplet method for acoustic impact-echo data retrieval. The impact sounds are being picked up by the suspended microphone. A droplet of water can be seen in motion above Guthrie’s head.
Two professors at Brigham Young University have been pushing the burgeoning field of acoustic impact-echo testing for bridge damage inspections in interestingly “liquid” directions.
Bridge decay is not always, or even often, apparent to the naked eye. By the time a pothole appears, significant...
Bridges
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November 12, 2014
The huge shake tables rumbled and the 70-ft-long, 52-ton concrete bridge survived a series of intense simulated earthquakes in the first multiple-shake-table experiment at the University of Nevada, Reno’s new Earthquake Engineering Lab, the latest addition to the world-renowned earthquake/seismic...
Bridges
Article
November 12, 2014
The New York State Department of Transportation utilized the StopCrackEX system to repair a 1.25-in. crack in a floorbeam of the Delaware River Bridge in Margaretville, N.Y.
Forgive those in charge of maintaining the nation’s steel bridges for thinking the sky is falling—they’re just trying to take advantage of the newest technology that could save their charges.
That technology, StopCrackEX, is based on a technique known as cold expansion, which traces its origins...
Bridges
Article
November 12, 2014
The first year of permanent construction operations on the New York Thruway Authority’s New NY Bridge, which ended in October, saw exceptional progress on the foundations for the replacement of the 60-year-old Tappan Zee Bridge north of New York City.
In the coming weeks and months, however,...