1995•Roads & bridges/Roads & bridges (Des Plaines, Ill. Online)Requires access
ANCIENT TECHNOLOGY CAN `BRIDGE' ACCESS GAP FOR THIRD WORLD COUNTRIES
Nils Olsson
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Abstract
The use of suspended prestressed wooden elements for bridge structures offers an alternative to their steel and concrete counterparts. These bridges are expected to carry tractor trailers and other heavy, multi-axle vehicles, as well as more common transportation modes and pedestrians. This article reports that prestressed wooden bridges have not yet made the leap from conceptual design to actual construction; but, the design has enough merit to warrant detailed discussion. Discussions on bridge design and cost are included.