The central span is an example of a patented double-leaf Strauss underneath counterweight bascule bridge. The Strauss Bascule Bridge Company was one of the most important bridge building firms in the United States during the early 20th century. The contractors, Puget Sound Bridge and Dredging Company, was a significant engineering and construction firm in the Northwest. The bridge has been placed on the National Register of Historic Places.
Length of largest span: 200.1 ft.
Total length: 1,980.1 ft.
Deck width: 20.0 ft.
Vertical clearance above deck: 14.2 ft.
Posted to the National Register of Historic Places on July 16, 1982
Approximate latitude, longitude
+46.97525, -123.87686(decimal degrees) 46°58'31" N, 123°52'37" W (degrees°minutes'seconds")
Deck condition rating: Satisfactory(6 out of 9) Superstructure condition rating: Fair(5 out of 9) Substructure condition rating: Satisfactory(6 out of 9) Appraisal: Functionally obsolete
Sufficiency rating: 46.7 (out of 100)
Average daily traffic (as of 2010)
May 30, 2013: New photos from M. D. Caillet
March 18, 2012: Updated by Craig Philpott: Refined design description
August 5, 2010: New Street View added by Nathan Holth