Casting Hot and Cold
Contractors and engineers battled the Minnesota winter to build a concrete segmental bridge with form travelers. Superstructure segments were poured in temperatures as low as -19F, using...
Rapid Redecking
A contractor replaced nearly 7,000 m� of steel grid roadway deck filled with microsilica concrete on the Canadian crossing of the Thousand Islands bridge system more than one year ahead...
A Museum for the Heavens
Replacing a icon such as the Hayden Planetarium's thin-shelled concrete dome is not the most desirable assignment. But the design team for the new Frederick Phineas and Sandra...
Santa Fe Sensation
The new renovation of the Sante Fe Opera Theater is a striking combination of architecture and engineering. The owners wanted to upgrade amenities, especially ADA compliance, and to protect...
All Decked Out
After 50 years of wear, the deck of New York City's Williamsburg Bridge was buckling and badly in need of replacement. In 1994, consultants recommended replacing the deck...
Cable-Stay Conundrum
Wind- and rain-induced vibrations of cables on cable-stayed bridges are a relatively new phenomenon. While some observers report hearing about such vibrations ten or 12 years ago, typically...
Mitigation of Void Development under Bridge Approach Slabs Using Rubber Tire Chips
The problem of void development under bridge approach slabs has been correlated to the use of integral abutment bridges (Schaefer and Koch, 1992). This void development then causes settlement...
Tire Shreds as Lightweight Fill for Embankments and Retaining Walls
Use of tire shreds in three highway projects is described. In the first project, tire shreds were used as a compressible inclusion to reduce pressures on a rigid frame bridge. Earth pressures...
Launched Bridges
Coldhearted Building
A 20,000-ton district cooling plant owned by the Public Service Company of Colorado was recently built to sell chilled water to customers in downtown Denver who will use it to air-condition...
Do Coated Pipes Last Longer?
Field studies have revealed that polymer coated steel pipe resists corrosion longer than pipe coated with other materials. Corrosion is the most common failure mechanism of pipe culvert,...
Bridge Within a Bridge
A multinational consortium retrofitted the Tagus River suspension bridge in Lisbon, Portugal. The retrofit included widening the roadway deck from five to six lanes, installing a railroad...
Shake, Rattle and Hold (Available in Structural Engineering Special Issue Only)
In-situ lateral load tests of two bridge bents were conducted on Interstate 15 in Salt Lake City, Utah, to determine the strength and ductility of an existing concrete bridge and the improvements...
Baseball Caps
The last ten years have been a renaissance for baseball stadium construction�a trend that doesn't look likely to stop just yet�and four of the new parks are on the cutting...
Below Boston's New Bridge
The Charles River Bridge, a 10-lane cable-stayed structure will be the widest cable-stayed bridge in the world. The bridge is 1,460 ft long with a main span between towers of 745 ft. This...
Calendar: Bridges 1999 Calendar
Featured bridges are: Cornish-Windsor Covered Bridge (NH); John A. Roebling Bridge (KY); Bollman Truss Bridge (MD); Eads Bridge (MO); Brooklyn Bridge (NY); Manhattan Bridge (NY); High...
Historic American Covered Bridges
Covered wooden bridges are a visual testament to the American spirit. Originally designed with roof-like covers to protect the exposed wood from the effects of sun and rain, these bridges...
Northumberland's Ice Breaker
Extending more than 12.8 km over treacherous waters, the new Northumberland Strait Crossing had to go a long way to finally join the last separate Canadian province to the mainland. Design...
A Race to Innovate
The annual Concrete Canoe Competition, which is co-sponsored by the ASCE and Cleveland-based Master Builders, fosters several engineering breakthroughs that are ignored or forgotten by...
A Bridge Along the Same Lines
Engineers in Tennessee were recently charged with building a new viaduct in an old profile, while at the same time keeping headroom for the trains and keeping off the neighbors'...
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