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First Avenue South Bridge

1956 establishments in Washington (state)Bascule bridges in the United StatesBridges completed in 1956Bridges completed in 1997Bridges in Seattle
Road bridges in Washington (state)Washington (state) building and structure stubsWashington (state) transportation stubsWestern United States bridge (structure) stubs
Lower Duwamish River
Lower Duwamish River

The First Avenue South Bridge is a pair of double-leaf bascule bridges built between 1956 and 1998 that carry State Route 99 over the Duwamish River about three miles (5 km) south of downtown Seattle, Washington. The present day northbound span was built in 1956 to connect the industrial areas northeast of the Duwamish to the residential neighborhoods to the south and southwest. Between 1996 and 1998, the drawspan was retrofitted and the approaches completely demolished and rebuilt. The southbound span opened in February 1997 and carried traffic in both directions for two years while the northbound span was rebuilt.In 2001, the southbound span was damaged by the Nisqually earthquake, knocking its piers 3 inches out of alignment, and was closed briefly for repairs.From the original construction to February 1995 when the retrofit began, the First Ave S bridge had the highest motor vehicle accident rate in Washington State.

Excerpt from the Wikipedia article First Avenue South Bridge (License: CC BY-SA 3.0, Authors, Images).

First Avenue South Bridge
1st Avenue South Bridge, Seattle Georgetown

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Wikipedia: First Avenue South BridgeContinue reading on Wikipedia

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Latitude Longitude
N 47.542222222222 ° E -122.33444444444 °
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1st Avenue South Bridge
98106 Seattle, Georgetown
Washington, United States
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Lower Duwamish River
Lower Duwamish River
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