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Title: Design Developments for Extradosed Prestressed Bridges

Author(s): Steven L. Stroh

Publication: Symposium Paper

Volume: 340


Appears on pages(s): 159-178

Keywords: aesthetics, bridges, construction, extradosed, fatigue, post-tensioning, proportioning parameters, stay cables

DOI: 10.14359/51725811

Date: 4/1/2020

This paper provides a description and design developments of the extradosed prestressed bridge concept. The development of the extradosed prestressed bridge concept is discussed, drawing upon the differences with a cable-stayed bridge type. Proportioning parameters used for initial concept development or verification are provided. This includes recommendations on span ranges, structure depth, tower height and multi-span applicability. Stay cable design considerations are discussed. These proportioning parameters are applied to a prototype design, the Pearl Harbor Memorial Bridge. Aesthetic opportunities for this new bridge type are discussed.