Double Duty: Approach Structures
The new Sarah Mildred Long Bridge, which connects the cities of Kittery, Maine, and Portsmouth, New Hampshire, features precast, posttensioned concrete, segmental box girder approaches in a stacked configuration...

Sustainability and Resilience in Transportation Infrastructure Geotechnics: Integrating Advanced Technologies for Better Asset Management
The 2030 Agenda for Sustainable Development, adopted by the United Nations General Assembly in September 2015, enumerates 17 sustainable development goals (SDGs) to be achieved by the member countries...

When Old Meets New: Railway Geotechnics and Remote Sensing
Railroad track, like any other built structure, relies on a foundation of geomaterials for support. In its most basal form, the railway track is quite simple: steel load-bearing members (rails) supported...

Railroad Tunnel Clearance Improvement and Linear Replacement: What Happens with Unexpected Ground Conditions during Tunnel Construction?
To increase the capacity and efficiency of transporting waste by rail to an existing landfill, Enviro Solutions Inc., the landfill owner, and CSX Transportation (CSXT), the rail line owner, sought the...

Emergency Retaining Wall Replacement: The East 26th Street Slide Repair in Baltimore, MD
During a record rainfall on April 30, 2014, a century-old, stone retaining wall between a dense urban roadway (26th Street) and the CSXT railroad track in Baltimore, MD, failed. The stone retaining wall...

Highway Retaining Walls are Assets: A Risk-Based Approach for Managing Them
Throughout history, retaining walls (RWs) have served a vital role in supporting civil infrastructure. The ruins of dry stone walls that purportedly supported the hills and slopes of ancient Rome can be...

A Foundation Engineering Trip Down the Mississippi: Foundations for Mississippi River Bridges from Minnesota to Louisiana
Huckleberry Finn had his adventure, but for those interested in foundation engineering, this article will float you down the Mississippi River on your own encounter with the many bridges...

Crossing the Hollandsch Diep
The design/build team charged with creating an aesthetically pleasing bridge in the Netherlands for high-speed rail faced tough requirements, among them tight construction tolerances and...

Tying It All Together
The Rancocas Greek Bridge, a steel tied arch designed for both light-rail and freight train loading, may be the first bridge of its kind to carry freight trains in the United States....

Torsion of Reinforced Concrete -A Historical Overview
The story of torsion of reinforced concrete must start with the French professor, C. L. Navier. In his landmark book (Navier, 1826) he rigorously derived the first rational theory for...

Detailing and Design Examples for Torsional Members
The nature of the internal force flow in a concrete member subject to torsion brings about both longitudinal and transverse force components. The resulting tension brought about by the...

Restoring PATH
Service from northern New Jersey to lower Manhattan on the Port Authority Trans-Hudson (PATH) commuter rail system will soon be restored thanks to a speedy rehabilitation of tunnels and...

The Big Dig's Big Dig
Widely recognized as the most demanding component of Boston's Central Artery/Tunnel Project, the tunnel jacking work performed beneath operating rail tracks represents a quantum...

Rising Tide
In an effort to accommodate a new light-rail system in New Jersey between Camden and Trenton, the state's Department of Transportation began the formidable task of enhancing...

Twin Crossings
The Hungerford Bridge actually comprises twin pedestrian bridges that are being constructed on either side of an operational 19th century railway bridge over the River Thames in London....

Ahead of the Curve
Four curved steel girder bridges for Pittsburgh's light-rail project posed challenges ranging from multiple site constraints to special rail loads and welded rail interactions....

The Train Lane
With the elimination of more than 200 at-grate roadway crossings, the Alameda Corridor - $2.4-billion rail cargo expressway in Los Angeles - will carry 100 freight trains in and out of...

A Major Water Main Crossing of the Ohio River at Cincinnati
This presentation chronicles a major water main crossing of the Ohio River at Cincinnati. The project is of interest because it provides for the interstate sale of drinking water and technical...

Fast Forward
Under the aegis of the French government, the Société Nationale des Chemins de Fer Français (French National Railway Society), or SNCF, has built two new bridges, each approximately 1,100...

Outstanding Civil Engineering Achievement Award and Award of Merit for 2001
The outstanding civil engineering achievement award (OCEA) recognizes civil engineering projects that contribute to community well-being, demonstrate resourcefulness in planning and solving...

 

 

 

 

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