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A New Skew

by R. Shankar Nair, (F.ASCE), Sr. Vice Pres.; Teng & Assoc., Inc., Chicago,


Serial Information: Civil Engineering—ASCE, 2000, Vol. 70, Issue 7, Pg. 52-55


Document Type: Feature article

Abstract:

Most bridges that cross roadways or other elements at a skewed angle are designed based on right-angle crossings with inefficient modifications. A new concept for skewed crossings is a cable-stayed bridge in which a diagonally oriented A-frame support-tower straddles both the suspended deck and the spanned element below. The tower crosses the spanned element at right angles, and the skewed deck structure is suspended from the pylon by cables, without piers. A new bridge in Frankfort, Illinois, demonstrates this aesthetic and efficient concept.

Subject Headings: Cables | Skewness | Suspended structures | Highway and road design | Cable stayed bridges | Bridge design | Bridge decks

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