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Bridges News 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 Article 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 Article 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,...
Bridges Article November 11, 2014
The Freeport Bridge, also known as the Donald R. Lobaugh Bridge, carries S.R. 0356 over the Allegheny River approximately 25 miles northeast of Pittsburgh, Pa.   Built in 1965, the bridge is vital to commerce and serves as a route for tourists and outdoor enthusiasts utilizing the extensive nearby...
Bridges Article November 11, 2014
Paducah, Ky., has become home to a $95 million visually transparent, parallel-chord truss bridge over the Tennessee River.   The Kentucky Transportation Cabinet (KYTC) recently replaced an aging, structurally deficient span of U.S. 60 in western Kentucky with a three-span, continuous Warren-style...
Bridges News November 11, 2014
Lee Floyd wants his packages to be delivered to all the zip codes that make up South Carolina.   So when the South Carolina Department of Transportation (SCDOT) bridge engineer got ready to assemble his first group of ACT 98 bridge replacements—called “packages”—he made sure the coverage was as...
Bridges News November 04, 2014
The dead of winter slowed the pulse of a few commutes around Toledo, Ohio, last year. Potholes were alive and well on I-75 bridges, creating unexpected lane closures to make necessary repairs.   Officials are taking a more preventive approach this time around, and on Nov. 4 crews started inspecting...
Bridges Products October 29, 2014
The city of Temecula, Calif., recently completed the installation of a 152-ft-long by 47-ft-wide U.S. Bridge Cambridge style, weathering single-span steel truss superstructure that included  2 – 9 ft exterior sidewalks. Click here to see the time lapse video of the bridge being assembled. The new...
Bridges Products October 29, 2014
Get ultra-precision lifts on your next bridge project by renting hydraulic cylinders (single or double-acting) and the synchronous lifting system. With an accuracy of 0.040 in. between leading and lagging cylinders, the “sync lift” has an integrated 10,000-psi hydraulic pump and controls.
Bridges Article October 07, 2014
With thousands of bridges, including 53 that cross the Mississippi and Missouri rivers, the Missouri Department of Transportation (MoDOT) will always need to invest in maintenance, repair and replacement of these critical pieces of the state’s transportation infrastructure.   Simply because of age...
Bridges Article October 06, 2014
Do not count out those good ole’ boys from L.A. (Lower Alabama) when faced with an obstacle.   Instead of accepting a problem and assuming the easy way out, they view that as a challenge to see how they can get the job done with limited resources.        The Houston County, Ala., Road &...
Bridges News October 03, 2014
Caltrans and its contractors have begun work on six emergency contracts to repair damage caused by an Aug. 24 earthquake in Napa and Solano counties totaling $5.3 million. Caltrans engineers and inspectors also continue to work with local agencies to assess and inspect damage affecting local...

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