Record Spans in Japan
The Japanese bridge authority was tasked in 1970 with overseeing a vast project to link to two main islands of Honshu and Shikoku. The project, scheduled for completion in 2000, comprises...
Positively Not Pedestrian
An elaborate pedestrian and bicycle bridge in Eugene incorporates a number of innovative engineering features to create an aesthetically pleasing structure to complement the surrounding...
Putting Polystyrene to Work
Geofoam, the generic name for block or low density cellular plastic foam solids used in geotechnical applications, has low density and good insulation properties, which makes it well suited...
Czech It Out (Available only in Structural Engineering Special Issue)
Bridge and transportation engineers and architects combined on the design of a unique bridge in a small city in the Czech Republic. The cable-stayed bridge only has one tower which is...
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...
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
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...
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 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'...
Bulb-Tees Make More Efficient Long-Span Bridges
The bulb-tee girder has helped erect new bridges with fewer I-beams, and is also shown in studies to be a structurally efficient, cost-effective alternative for long-span bridges....
Bridge Bashing
Ships can be dangerous to bridges. Collisions are increasing and costs are considerable. There are ways to reduce the risks, but these cost money, too. A 1993 vessel collision with and...
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