Rebound of the bascule bridge

Article Abstract:

A new single-leaf, unbalanced bascule bridge built on the Sheboygan River in Wisconsin has the durability of modern fixed bridges while costing less than a conventional bascule bridge. It's noncounterweighted design does not require expensive cofferdam construction and it has a computer controlled maintenance system, traffic warning gates, and leaf lifting activator. The conventionally reinforced deck slab uses lightweight-aggregate concrete mix to minimize weight. The structural framing system has a massive cylindrical cross girder to provide a rigid spine to all mountings.

Innovations, Finance, Contracts, Buildings and facilities, Wisconsin. Department of Natural Resources, Sheboygan, Wisconsin, Structural design, United States. Federal Highway Administration, Drawbridges, Wisconsin. Department of Transportation

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Holding steady

Article Abstract:

The seismic retrofit of the San Diego-Coronado Bay Bridge involves using rubber isolation bearings, "pipe-in-pipe" bracing, and reinforced column jackets in order to secure that it withstands the active fault directly underneath it. The bridge spans 7,813 feet and slated to be completed by early 2002.

Research, Evaluation, California, Civil engineering, Bridges (Structures), Earthquake resistant design

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A new skew

Article Abstract:

This article describes design and construction of skewed bridges as opposed to square crossings. Structural configurations of a cable-stayed bridge for skewed crossings are presented which include safety and economy features.

Models, Construction industry, Bridges, Cable-stayed, Bridge piers, Cable-stayed bridges

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