Long Term Performance of the Goldstream Creek Bridge

by Dean J. Baldassari, Alaska Dep of Transportation &, Public Facilities, Research Section, Fairbanks, AK, USA,



Document Type: Proceeding Paper

Part of: Cold Regions Engineering

Abstract:

In 1964 the Alaska Department of Transportation and the U. S. Army Cold Regions Research and Engineering Laboratory initiated a cooperative study which in the long-term generated a significant amount of ground temperature and settlement data at the Goldstream Creek Bridge site near Fairbanks, Alaska. The purpose of the study was to evaluate the long-term bridge performance in order to improve bridge design techniques in areas where permafrost is present. Data over the past twenty years has been reduced and evaluated revealing some drastic changes in the thermal regime causing substantial settlements of Pier 2, approximately 15 cm over a 10 year period. This bridge analysis has demonstrated the hazards of relying on permafrost adfreeze bonding for support of piles located in streambeds in warm permafrost regions.

Subject Headings: Soil settlement | Permafrost | Bridge foundations | Bridge design | Rivers and streams | Thermal analysis | Soil analysis

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