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.

Seismic Bridges   Roads & Bridges May 2005   Arthur Schurr, Contributing Author
California installs an aggressive seismic retrofit effort

Polymer Concrete Wearing Surface System for Orthotropic Steel Deck Bridge   Roads & Bridges May 2005   Vellore S. Gopalaratnam and Arthur M. Dinitz

Shining through   Roads & Bridges November 2004   Corrina Stellitano, Contributing Author
“There had been a bridge inspection just two months earlier and this crack was not discovered.”

Plastics charge   Roads & Bridges August 2004   John E. Shea and Lew Koflowitz, Contributing Authors
It is because of FRP’s light weight, durability and resistance to fatigue, stress and corrosion that it is receiving increased scrutiny from the marketplace.

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.

Innovation acceleration   Roads & Bridges August 2004   By Dan Sanayi
Recommendations for meeting goals included such innovations as using self-consolidating concrete, particularly for the construction of the bridge’s pontoons.

Trembling dice   Roads & Bridges May 2004   Allen Zeyher, Associate Editor
REDARS (for Risks from Earthquake DAmage to Roadway Systems) is software being designed to offer seismic risk analysis.

Suspending the "Big One"   Roads & Bridges May 2004   Semyon Treyger, P.E., S.E., Michael H. Jones, P.E., S.E., and Greg Orsolini, P.E., S.E.
The “big one” could be capable of releasing as much as 16 times more energy than a major earthquake on the San Andreas Fault.

Building a durable bridge   Roads & Bridges May 2004   By Benjamin Tang
With recent concerns about a shortage of steel supplies, FRP composite rod manufacturers are stepping up their production in anticipation of increasing demand.

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.

A commitment to quality   Roads & Bridges January 2004   Dennis Merida
For the New Jersey Department of Transportation (NJDOT), replacing a deteriorated drawbridge built in 1922 resulted not only in a gleaming new structure, but in a project distinguished by innovative design features and a commitment to quality. This commitment was honored with the National Partnership for Highway Quality's (NPHQ) 2003 National Achievement Award.

Next performance   Roads & Bridges January 2004   Jennifer G. Prokopy
During the past 10 years, the design and use of high-performance concrete (HPC) has become more common, with hundreds of structures created using the material. HPC makes it possible to create longer components for the bridges, reducing the number of piers in water and adjacent to roadways, resulting in lower foundation costs and improved safety. It reduces the number of expansion joints and bearings and the subsequent need for repair and replacement.

An open and shut case   Roads & Bridges November 2003   Marc Start, P.E., Robert Clegg, P.E., Contributing Authors
The Port Huron, Michigan, staff recognized the challenges of traffic control with the bascule bridges, and successfully submitted an application for Congestion Mitigation and Air Quality (CMAQ) funding of a traffic signal modernization and interconnect project. The goals of the project are to reduce traffic congestion related to the bridge events and to reduce city emergency service response times.

Drilling inside a mouth   Roads & Bridges November 2003   Larry Trojak, Contributing Author
The Golden Gate Bridge is undergoing a three-phase renovation to meet seismic requirements. That upgrade will allow it to retain its structural integrity through a quake measuring 8.3 on the Richter scale. For Drill Tech Drilling & Shoring Inc., Antioch, Calif., drilling subcontractor, that meant having to deal with low overhead clearances during its retrofit of the south approach--a challenge that was met through the use of a drilling unit made for just such situations.

King Kong finds work   Roads & Bridges October 2003   Rodney Garrett
The engineering firm Hardesty & Hanover LLP, headquartered in New York City, is heading the design and details of the bridge rehabilitation project for the NYCDOT. For building the new poured-in-place concrete piers, it was decided by Hardesty & Hanover that the drilled shaft method be used. One of the pieces is the APE King Kong model 400 hydraulically operated vibratory hammer with a patented clamping system used for large-diameter caissons. It is o

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.

Readiness to the Rescue   Roads & Bridges July 2003   Emmett McGregor, Contributing Author
There is a real need for a rescue plan any time a worker is exposed to the risk of a fall. The equipment and gear must be used in the right manner. Harnesses, lanyards, lifelines and all the associated components of a fall arrest system need to be properly worn and correctly attached in order to effectively save a life, as they're designed to do. That said, there might still be times when a worker experiences a fall. What happens then?

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.

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.

Lightweight Challenges Heavyweight   Roads & Bridges May 2003   Paul Hohensee, Contributing Author
Steel reigned supreme as the basic material of jack construction until about a decade ago, when aluminum cylinders appeared on the scene. Jacks have followed the same pattern as beverage cans and cars. First, aluminum was introduced as a replacement for steel. After that, attention was devoted to reducing bulk and cutting more weight. Computerized design, finite element analysis and modern alloys have made quite a difference.

A Patch for Jacket Weather   Roads & Bridges May 2003
A novel cementing solution is needed to address the specific problems related to cold climate applications. During the last 10 years, Argonne National Laboratory, Argonne, Ill., has been developing Ceramicrete, a phosphate-based cement that may provide a solution to these cold climate problems. This cement was originally developed for encapsulating nuclear waste, and now is becoming a sensible option for DOTs across the midwest and northern U.S.

Time to Wrap   Roads & Bridges May 2003   David White, P.E., and Scott Isaac, Contributing Authors
Twenty-five deteriorated bridges along a 5-mile corridor of I-80 in Salt Lake City were in need of major repair. None of the bridges met current seismic design standards. Ultimately, it was decided to use simple, low-cost techniques, including carbon fiber reinforced polymer (CFRP) fabrics and other structural repairs that could reduce the severity of damage from an earthquake.

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.

TRANSPORTATION SECURITY   Roads & Bridges December 2001   Bill Wilson
The threat of using vehicles for terrorism has the transportation inductry on edge.

Working for keeps   Roads & Bridges November 2001   Allen G. Davis
To save or not to save is often the question facing owners of historic reinforced concrete bridges built in the first half of the 20th century. For decades, most have been subjected to much heavier traffic than their original designers ever imagined, not to mention the wear and tear of weather and deicing salts.

FHWA invests in high-tech bridges   Roads & Bridges November 2001   John M. Hooks
FHWA program looks to use innovative materials to improve service life and reduce service cost for bridges.

Watching paint dry   Roads & Bridges November 2001   Barry Couts
Why bother to pay for certified independent inspection of bridge painting projects when the contractor offers to provide inspectors at no additional charge?

Stop chipping away   Roads & Bridges November 2001   Richard Yach
Crews work to remove paint as part of a $25 million rehab bridge project in New Orleans

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

Cross that bridge in June   Roads & Bridges May 2001   Bill Wilson
IBC in Pittsburgh looks back at the 20th century, moves forward into the 21st
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INNOVATIONS IN TECHNOLOGY   Roads & Bridges March 2001   John Hooks

Great expectations   Roads & Bridges December 2000   Tim Gregorski
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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

Showing fancy foot work   Roads & Bridges November 2000   William Herndon
Impressive, precise maneuvers used to strengthen Golden Gate Bridge foundation

Fighting off bottom feeders   Roads & Bridges November 2000   Michael J. Ganas, P.E.
Three tests could help detect underwater bridge deterioration

Zip through it easily   Roads & Bridges August 2000   Raymond A. Hartle, P.E.

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.

Playing it safe with a chopper   Roads & Bridges June 2000   Kevin P. Corbley

INNOVATIONS IN TECHNOLOGY   Roads & Bridges May 2000   William Wright

Taking a crack at it   Roads & Bridges April 2000   Bill Wilson

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

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

A fighter for historic bridges   Roads & Bridges August 1999   by Larry Flynn

High and mighty   Roads & Bridges June 1999

Two of a kind   Roads & Bridges December 1998

Stress test   Roads & Bridges November 1998

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

Thirtysomething bridge gets a new life   Roads & Bridges November 1996
Public involvement and community partnering aid in the reconstruction and widening of the John A. Blatnik Memorial Bridge linking Minnesota and Wisconsin

New York tops list of states whose bridges are most in need of repair   Roads & Bridges November 1996
New York tops the list of states whose bridges are in the worst condition, according to the American Automobile Association (AAA) and the Federal Highway Administration (FHWA). AAA ranked the states and Washington, D.C., according to the percentage of their bridges rated structurally deficient or functionally obsolete by the FHWA.

A study in lead   Roads & Bridges November 1996   James Valenti, P.E.
Effective controls are employed to remove lead paint from the Williamsburg Bridge main cable system without using abrasive blasting technologies

San Francisco area bridges planned for retrofit   Roads & Bridges August 1996   David Banasiak
Since its completion the Bay Bridge has existed in the shadow of its famous neighbor the Golden Gate Bridge; however, in 1989 it gained the public's attention.

Earthquake engineering isn't just for California any more   Roads & Bridges August 1996   Paul Muccino, P.E.
With advanced 3-D computer analyses and modelling, the New York State Thruway Authority is bracing the landmark Tappan Zee Bridge for a seismic shock that hopefully will never come

Designed for seismic stability   Roads & Bridges August 1996   David Banasiak
Caltrans implements a pile-driving test program to study foundation systems for reconstruction of the I­p;880 Cypress Freeway in the San Francisco Bay area

Quake-resistant beauty   Roads & Bridges August 1996
Interchange reconstruction project to alleviate traffic congestion, guard against earthquakes, while ensuring an aesthetically pleasing structure in Santa Barbara, Calif.

Bend but don't break   Roads & Bridges August 1996
A unique 'multidisciplinary approach' is used to secure Portland's Marquam Bridge against the onslaught of a design maximum expected earthquake

Peace Bridge project links international efforts   Roads & Bridges June 1996   Charles H. Wyatt

INNOVATIONS IN TECHNOLOGY   Roads & Bridges May 1996   William Bellinger

Welding can restore corroded suspension bridge eyebars   Roads & Bridges April 1996   Kirti Gandhi, Ph.D., P.E.

BRIDGES '96   Roads & Bridges April 1996   Gary Howard

INNOVATIONS IN TECHNOLOGY   Roads & Bridges January 1996   Donald Jackson