Bridge conference spans globe

Article Abstract:

The 1993 annual International Bridge Conference and Exhibition held in Pittsburgh in June focussed on new construction and rehabilitation projects from the US, Scandinavia and Canada. The construction engineers should cooperate with environmental groups and act according to the air-quality standards to put in effect the Intermodal Surface Transportation Efficiency Act (ISTEA). Keynoter Howard Yerusalin, the Pennsylvania Secretary of Transportation, pointed out that the US Congress's failure to grant funds is creating problems between the highway and transit supporters. The Great Belt Bridge in Norway, a new asymmetric cable-stayed bridge in Burlington, Iowa, a 1205 ft single steel box-grinder bridge in Seattle and New York's Williamsburg Bridge, and the rehabilitation of the Magwilgel Bridge in Canada were discussed in the conference, which was sponsored by the Engineers Society of Western Pennsylvania.

Conferences, meetings and seminars, Environmental aspects, Bridge construction, Engineers

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High-strength concrete tested in bridge girders

Article Abstract:

Concrete Technology Laboratories and Tulane University conducted tests to evaluate the performance of high-strength concrete bridge girders. Three manufactured prestressed concrete bulb-tee girders were tested for flexure with and without a deck, allowable shear and dead load effects. The tests showed that high-strength concrete was a structurally safe and economically viable alternative bridge material. However, availability may impede the marketing of high-strength concrete. Meanwhile, the project also aimed to study the viability of mass-producing high-strength concrete bridge elements.

Research, Evaluation, Testing, Bridges, Concrete, Concrete bridges, Structural stability, High strength concrete

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Bridge barges into New York

Article Abstract:

Skidmore, Owings and Merrill started on Feb 27, 1992, the construction of a 230-foot glass-enclosed pedestrian bridge 20 feet over Manhattan's West Side Highway in New York City. The $10-million trussed-arch walkway will link Chambers and West streets, making for safer access to and from the new Stuyvesant High School. The handicapped can go up the bridge via clear glass elevator towers. The 250-ton prefabricated span is already in place, to be followed by 20 precast panels for the decking.

Public works, Design and construction, New York, New York, New York, Manhattan, New York, New York, Footbridges, Pedestrian facilities design

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