Replacement of the Macdonald Bridge Suspended Spans: Fabrication and Field Construction Works
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Bibliographic Details
| Author(s): |
Dusan Radojevic
(COWI Bridge North America, North Vancouver, BC, Canada)
Keith F. Kirkwood (COWI Bridge North America, North Vancouver, BC, Canada) |
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| Medium: | conference paper | ||||
| Language(s): | English | ||||
| Conference: | IABSE Symposium: Engineering the Future, Vancouver, Canada, 21-23 September 2017 | ||||
| Published in: | IABSE Symposium Vancouver 2017 | ||||
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| Page(s): | 951-958 | ||||
| Total no. of pages: | 8 | ||||
| Year: | 2017 | ||||
| DOI: | 10.2749/vancouver.2017.0951 | ||||
| Abstract: |
The Angus L. Macdonald Bridge, completed in 1955, connects Dartmouth and downtown Halifax, Nova Scotia, Canada. This suspension bridge is 762 m long, with a 441 m long main span. The deck of the suspended spans reached the end of its functional life and the entire superstructure was replaced segment-by-segment during full weekend and evening closures of the bridge, with traffic using the bridge during weekdays. The new deck segments were fully prefabricated, including an initial thin layer of wearing surface, and erected in a way that allowed traffic to use the bridge immediately following the replacement of an existing deck segment. This paper describes some aspects of the complex fabrication of the bridge superstructure. It further describes how the deck segments were replaced and explains unique challenges encountered during segment replacement and how they were addressed. |
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| Keywords: |
steel erection fabrication suspension bridge superstructure replacement deck segment replacement
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