Four deep
Roads & Bridges
June 2008
By Dr. Kevin MacDonald
Cement mixes give I-35W a stable design
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Their "Q" to innovate
Roads & Bridges
June 2008
By James A. Platosh, P.E.
Extradosed bridge design one of a kind on I-95 project
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Neck sticks out
Roads & Bridges
December 2007
By Chris McMillan
New technologies place special tag on Throgs Neck Bridge
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The mulligan that counts
Roads & Bridges
December 2007
By Brian Ranck
Pennsylvania Turnpike takes a second shot at Allegheny River crossing
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Leading them to water
Roads & Bridges
November 2007
By Bill Wilson
New bridge carrying I-35W will offer more to the community
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Boon or Boondoggle?
Roads & Bridges
November 2007
By Peter J. Venderzee
FHWA’s Long Term Bridge Performance program has the makings of a champion
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Arches have no rivals
Roads & Bridges
September 2007
By Wayne F. Lorenz, P.E., and Phillip J. Wolfram
Unique Roman bridges offer clues as to how it was done centuries ago
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Roaring 50's
Roads & Bridges
November 2006
By Allen Zeyher Managing Editor
The decade of the 1950s was hugely
important for the development of bridge design and
construction
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Good, Great, Wicked!
Roads & Bridges
November 2005
Tom Doe, P.E., and W. Jay Rohleder Jr. Contributing Authors
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History in the remaking
Infrastrucure Security 2005
October 2005
Sherif Morcos, Ph.D, P.E.
Seismic analysis and retrofit of historic arch bridges involves a thorough understanding of their structural behavior.
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Engineered Sculpture
Roads & Bridges
August 2005
Allen Zeyher Managing Editor
We have a very sophisticated computer program that we developed back in the late ’60s, early ’70s to do three-dimensional objects,” Gatti told Roads & Bridges. “We do nothing but bridges. And we do a lot of complex bridges . . . so we developed a pretty sophisticated geometric program that can calculate just about anything in space.
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Seismic Bridges
Roads & Bridges
May 2005
Arthur Schurr, Contributing Author
California installs an aggressive seismic retrofit effort
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Big Canoe sticks with timber theme
Roads & Bridges
December 2004
Given these advantages, engineers can no longer assume that concrete or steel is the material of choice for their clients.
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Pulling out the wood
Roads & Bridges
December 2004
Because of its strength and aesthetic appeal, timber is being revived as a popular bridge framing material, much as it was for our ancestors.
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Bridges With More
Roads & Bridges
August 2004
Peter C. Taylor, Ph.D., P.E., and Shrinivas B. Bhide, Ph.D., P.E., S.E Contributing Authors
To make it easier for specifiers to use HPC for bridges, the Portland Cement Association has worked with CTLGroup to develop a Guide Specification for High Performance Concrete for Bridge Elements.
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Brooklyn's Memorable Season
Roads & Bridges
July 2004
By Al Walter, Contributing Author
The new Belt Parkway Bridge over Ocean Parkway in that heavily traveled part of the borough is to be completed in record time—290 consecutive days, starting March 1 of this year.
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Everybody wants in-and out
Roads & Bridges
May 2004
Bill Wilson, Editor
Faced with the constricted problem of congestion on the four-lane Lee Roy Selmon Expressway, then-Mayor Dick Greco knew the walls were closing in at a fast rate.
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Lasting line of defense
Roads & Bridges
March 2004
William Earley, Contributing Author
High-performance prepackaged grouts have been formulated that offer state-of-the-art protection for stressed and steel tendons, as well as many other desirable qualities.
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Star treatment for a mouse
Roads & Bridges
November 2003
The design and construction of the 560-ft bridge taking Fifth Street over I-25 and Plum Creek in Castle Rock, Colo., came up against severe environmental constraints. Plum Creek is the habitat of the Preble's Meadow Jumping Mouse, which is a threatened species protected since 1998 by the Endangered Species Act. Among other things, this act makes it unlawful to significantly modify the habitat in a way that would disrupt normal behavior patterns of the mouse.
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Fit to be tied
Roads & Bridges
November 2003
Patrick Cassity, P.E., S.E., Kenneth Serzan, P.E., and Norman McDonald, P.E.
Very few long-span tied-arch bridges have been built recently in the U.S. due to concerns regarding redundancy of the structural system and the fact that cable-stayed systems are typically more economical. However, tied-arch systems can be developed to ensure sufficient redundancy and improve cost competitiveness. One such example is the new U.S. 20 bridge.
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Soaring on the feet of an elephant
Roads & Bridges
August 2003
Allen Zeyher
The Engineers' Society of Western Pennsylvania, in association with Roads & Bridges, awarded the Eugene C. Figg Jr. Medal to Buckland & Taylor Ltd., North Vancouver, British Columbia, for the company's work on the Rama VIII Bridge, crossing the Chao Phraya River in Bangkok, Thailand.
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Ready for the any day event: FHWA Bridge Plan Part III
Roads & Bridges
August 2003
Sheila Rimal Duwadi, P.E., Contributing Author
To meet the demand for a 21st century transportation network, FHWA is proposing a comprehensive program of bridge research and technology (R&T). This third and final article on the proposed R&T program presents a strategy for dealing with bridge failures due to catastrophic events, both natural and man-made. Addressing these rare and unusual events is the focus of FHWA's initiative to ensure the "Safety, Reliability, and Security" of U.S. bridges.
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The bridge of the future: FHWA Bridge Plan Part II
Roads & Bridges
July 2003
Steven B. Chase, Contributing Author
In the first article in this three-part series, John Hooks introduced the concept of Bridges for the 21st Century, a comprehensive research and technology (R&T) program proposed by Federal Highway Administration (FHWA) to identify and deploy cutting-edge solutions to strengthen the bridge infrastructure. Intent on getting ahead of the bridge deterioration curve, FHWA has outlined an R&T strategy to develop the Bridge of the Future, a new generation of cost-effective, high-performance and low-maintenance bridges.
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Holding it together: FHWA Bridge Plan Part I
Roads & Bridges
June 2003
John M. Hooks, Contributing Author
The first in a three-part series, this article describes the Federal Highway Administration's (FHWA) proposed strategy for inventorying and preserving the current stock of bridges in the U.S.for inventorying and preserving the current stock of bridges in the U.S.
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Choice of dip: HUGE
Roads & Bridges
March 2003
The world's largest galvanizing kettle recently hot-dipped the heaviest single item ever in North America--and maybe even the world.
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Operation: Increased Capacity
Roads & Bridges
November 2002
Christopher J. Mills and Alexander Collins, Contributing Authors
The new Hathaway Bridge replacement was let by Florida Department of Transportation using the design-build format. The Hathaway Bridge design-build team consists of Granite Construction Co. and HNTB Corp. and several other design and construction firms. The project consists of twin, 80-ft-wide, segmental concrete box girder bridges with seven spans of 330 ft and shorter approach spans.
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Drive-through art gallery
Roads & Bridges
September 2002
Allen Zeyher
The cool new way to get to the beaches of Daytona is across the Broadway Bridge. In fact, the route has been requested by the children of several local dignitaries who spoke at the dedication of the new bridge. The children want to see the mosaics of wildlife that adorn the pedestrian walkway along the 3,008-ft length of the dual segmental concrete structure.
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Checking crystal bridges
Roads & Bridges
July 2002
New York’s Steuben County Department of Public Works relies on Autodesk Land Desktop and its companion products, Survey and Civil Design. With labor-saving engineering and design tools that are easy to learn, the department’s small staff is able to handle projects that it might otherwise hire out to contractors.
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Making Earthquakes Tremble
Roads & Bridges
May 2002
Ravi Mathur, P.E., Greg Orsolini, P.E., Mark A. Ketchum, P.E., Tom Spoth, P.E.
In 2004, the Carquinez Bridge, with a main span of 2,388 ft, will be ready for action. It will be the first orthotropic steel box girder suspension bridge ever built in the country. Carquinez Bridge is the first bridge in the U.S., located in a potentially high seismic risk area, to be designed to present-day stringent seismic design standards.
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Willing to bend
Roads & Bridges
May 2002
The Oregon Department of Transportation (ODOT), using highly alloyed stainless steel reinforcing bar in its concrete structures, is building a bridge in North Bend, Ore., that is expected to provide maintenance-free service for an amazing 120 years—nearly double the service life of the bridge it is replacing.
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Jigsaw bridge puzzle
Roads & Bridges
March 2002
Jeffrey S. Mehle, P.E.
When the Virginia Department of Transportation needed to replace the mainline structure of the I-95 James River Bridge, they knew it had to happen without affecting rush-hour traffic through the middle of downtown Richmond. Joining forces with the Virginia DOT and Archer-Western Contractors Ltd., Fort Lauderdale, Fla., Parsons Bridge and Tunnel Division developed constructibility modifications for the project. For Parsons, the key to making the process work better was match-casting.
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BRIDGES 2002
Roads & Bridges
January 2002
Allen Zeyher
SCDOT breaks ground on biggest project in its history
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Nothing earth-shattering
Roads & Bridges
August 2001
Bill Wilson
It's no surprise Jim Roberts, a decorated Bay area bridge engineer, is this year's Roebling Medal recipient
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Know what you're digging into
Roads & Bridges
August 2001
Steve Wendland, P.E.
Geotechnical subsurface analysis for bridge projects could help prevent future disasters
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Centerpiece rising
Roads & Bridges
December 2000
Allen Zeyher
The cable-stayed bridge over the Charles River will form a gateway to Boston's downtown.
PDF Version
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Grafting a new artery
Roads & Bridges
November 2000
Allen Zeyher
California plans to rebuild the San Francisco-Oakland Bay Bridge to take it into its second century
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Drilled into their head
Roads & Bridges
November 2000
Sybil E. Hatch, P.E.
Years of research has convinced state DOTs of the benefits of drilled shafts
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BRIDGES 2000
Roads & Bridges
November 2000
Tim Gregorski
It took a few years to perfect the process, but building pedestrian timber bridges will be easier now with the introduction of new national standards that allow designers to plug in numbers and obtain reliable and structurally sound results—saving time and money while lessening the inconvenience to the public.
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Happy bridge building
Roads & Bridges
June 2000
Wayne A. Endicott
Test pilots speak of "pushing the envelope" when they test a new airplane. That pretty well describes what engineers from the Tennessee Department of Transportation (TennDOT) did when they designed and built the new bridge that carries Route 50 over Happy Hollow Creek in Hickman County.
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BRIDGES 2000
Roads & Bridges
June 2000
Tim Gregorski
Pennsylvania Department of Transportation (PennDOT) has a problem. It has hundreds of bridges and overpasses that need to be inspected every two years, some even more frequently.
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A Wilson with one important point
Roads & Bridges
November 1999
by Bill Wilson
Centered around the idea of ‘V’-shaped piers, the Parsons Transportation Group wins unanimous approval for the design of the second Woodrow Wilson Memorial Bridge
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New and improved bridges
Roads & Bridges
November 1999
by Tim Gregorski
Inaugural designs and replacements dominate the bridge Class of 1999
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An uncommon bridge solution
Roads & Bridges
November 1999
Nebraska and Iowa are the first states to incorporate Inverted Tee Girder bridges
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Bridge over troubled water
Roads & Bridges
August 1999
by Bill Wilson
Standing up to the forces of nature, Confederation Bridge wins 1999 George S. Richardson Medal for single, recent outstanding achievement in bridge construction
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New bridge projects span the nation
Roads & Bridges
November 1998
by Tim Gregorski
ROADS & BRIDGES reviews new, reconstruction, restoration and seismic retrofit bridge projects taking place throughout the United States
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Stealth technology visible in bridges
Roads & Bridges
November 1998
by Jerome S. O’Connor, P.E.
New York State DOT demo projects endeavor to find whether fiber-reinforced polymer composites hold promise for repair of bridges; lower labor costs help off set higher initial cost
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Akashi Kaikyo Bridge
Roads & Bridges
August 1998
Tim Gregorski
World's longest suspension bridge opens in Japan with aid of advanced bridging technology
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The sun never sets on a Man-Chung Tang bridge
Roads & Bridges
August 1998
Larry Flynn
The 1998 recipient of the International Bridge Conference's lifetime achievement in bridge engineering, Dr. Man-Chung Tang, has built bridges all over the world, for transportation and for peace
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University Engineers Improve HP Concrete
Roads & Bridges
August 1997
David Banasiak
Engineers at the University of Cincinnati's civil engineering department are ecstatic about what they say are vast improvements in the quality of the cement they're now mixing.
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