Balancing on the tides

Article Abstract:

The original designer of the George P. Coleman Bridge at York town, Virginia, has prepared a design to widen the bridge from 31 ft to 77 ft, 4 in. This design preserves the original swing-span drawbridge design. The new design involves six spans of a truss fabricated of shop-welded high-strength steel members with a light-weight concrete deck. A unified model of barges, towers and bridge span, to be used in the project, is created through GT STRUDL structural analysis. The design deals with distributing the load, strengthening of the existing bridge, and other support systems.

Planning, Virginia. Department of Highways and Transportation

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Ready for anything

Article Abstract:

A temporary modular bridge kit developed by Caltrans uses structurally strong flatcars for the deck and columns. The open-grid steel deck of the bridge makes it mobile, easy to set up and dismantle, and increases the operating speed. The capacity of the bridge is more than the loading of the American Association of State Highway and Transportation Officials. The bridge connects the broken ends of damaged bridges to allow the passage of traffic and allow repair on one-half of the bridge.

Buildings and facilities, California. Department of Transportation

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Wider ride to the Rainbow

Article Abstract:

Plans are being made to widen entrance to Rainbow Bridge between New York and Ontario for smooth traffic flow. Engineers are trying to design a structure that will not affect in any way the spectacular view of Niagara Falls. Construction of the structure should be such that it is not prominently visible while satisfying all other safety standards. Engineers are planning to widen only the concrete approach spans without disturbing the steel arch. The proposed design is discussed.

United States, Environmental aspects, Bridges, Bridges (Structures), Niagara Falls

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