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...
Holding Up
Now that the redevelopment of the World Trade Center site is under way, the time is right to examine the status of the remaining slurry wall foundation system and consider how future construction...
Great Hall
One of the most provocative structures gracing the London landscape, the new City Hall, at More London, is also a world-class model of energy-efficient design....
High-Profile Tunneling
When a flood left a considerable amount of debris in its wake the replacement of a hydroplant's tailrace high in the Peruvian Andes presented formidable challenges....
First of Its Kind
The crossing designed to replace the Pearl Harbor Memorial Bridge, in New Haven, Connecticut, appears to be a cable-stayed bridge with unusually short towers but in fact is an extradosed...
The Benefits of Virtual Building Tools
Several short case studies illustrate how virtual building tools enable designers, builders, and owners to test any aspect of a project's design, organization, and schedule...
Keeping It Rolling
Thanks to a complex construction staging scheme and a temporary tieback support system, workers were able to rehabilitate an aging rolling lift bridge in Boston....
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...
Joining Forces
In times of limited funding, roads and mass transit are sometimes seen as competing interests, but in Denver the two are united in a massive effort to reinvent an aging and congested transportation...
Enduring Strength
The long-term effectiveness of posttensioning in bridges depends on the resiliency of the tendons, and various factors related to construction and marine environments come into play. How...
Northeast Passage
It will take a deft hand to manage the many aspects of this massive highway and mass transit project along interstate 95 in Connecticut. CAreful construction staging and detailed traffic...
Grand Finale
For 87 years Oklahoma's state capitol remained unfinished, the majestic cast-in-place concrete dome its designers envisioned never built. But as Oklahoma approached its centennial�to...
The Smaller the Better
Many wastewater treatment plants in the United States seeking to expand or upgrade their facilities often face space limitations. But now a number of small-footprint technologies refined...
Ramping Up
The reconstruction of the Sprinfield interchange, also known as the Mixing Bowl�one of the largest, most complex highway projects in the nation�has reached the halfway point. But some...
Island in the Mur
Floating atop an immense pontoon like a shimmering seashell, this elliptical island of steel and glass in the middle of an Austrian river�an inventive, unconventional bridge�was designed...
Under Cover
In capping a 190-acre hazardous landfill in metropolitan Los Angeles, engineers saved time and money by relying on a construction method seldom used in the environmental sector: design/build....
Worthy Successor
Now under construction, the replacement for Florida's Hathaway Bridge, which crosses St. Andrew Bay in Panama City, will more than double the capacity of the existing structure....
Flying High
The disgners of a new hangar for the U.S. Air Force Museum created a strong, functional structure with a peaceful mission: to tell the story of American military aviation....
Measuring Productivity: An Industry Challenge
Is the design and construction industry more productive today than it was a decade ago? Is it matching the achievements in productivity attained by other industries? Are technological...
Transformation
The site of a former wastewater treatment plant in western New York State is now home to a sprawling public works complex thanks to an inventive reuse scheme that consolidates public works...
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