Bridges: steep rock slope forces foundation redesign

Article Abstract:

After the construction of O'Rorke Bridge was started in New York, the drilling contractor found that the rock slope beneath one of the main piers was much steeper than expected. Thus a new bridge is designed which would be 70 ft wide, accommodating four lanes of traffic, and 45 1/2 ft above the mean high water level.

New York

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Expo Pavilion spans river

Article Abstract:

The Ebro river is spanned by a curvilinear structure that functions as a bridge but will also house several large exhibitions for the Expo Zaragoza 2008. The bridge is 270 m long and has two spans and its facade is a curved surface covered by 29,000 triangular shingles of concrete.

Facilities & equipment, Organizational history, Spain, Conferences, meetings and seminars, Buildings and facilities, Location, Exhibition buildings, World fairs

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Hybrid span combines suspension, cable-stayed systems

Article Abstract:

Design details of the new crossing that will replace the North Avenue Bridge on the Chicago River are presented. The new bridge features a unique combination of two distinct bridge types.

Illinois, Chicago River

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