I-5 - Stillaguamish River Bridge (Southbound)
Washington State Department of Transportation
License: Creative Commons Attribution-NonCommercial-NoDerivs (CC BY-NC-ND)
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BH Photo #315579
The southbound I-5 Stillaguamish River Bridge was built in 1933. It originally carried two lanes in each direction of US 99. When I-5 was built in the 1960s, the bridge became part of the freeway. In 1971, a new bridge was built just east of the original one to carry three lanes of northbound I-5. The old bridge continued to handle three lanes of southbound I-5. The bridge deck was replaced in 2014.
- Through truss bridge over Stillaguamish River on I-5
- Snohomish County, Washington
- Open to traffic
- Built 1933, bridge deck replaced 2014
- Parker through truss
Length of largest span: 200.1 ft.
Total length: 859.0 ft.
Deck width: 47.9 ft.
Vertical clearance above deck: 16.4 ft.
- Approximate latitude, longitude
- +48.19667, -122.21000 (decimal degrees)
48°11'48" N, 122°12'36" W (degrees°minutes'seconds")
- Approximate UTM coordinates
- 10/558705/5338461 (zone/easting/northing)
- Quadrangle map:
- Arlington West
- Inventory number
- BH 34537 (Bridgehunter.com ID)
- Inspection (as of 03/2016)
- Deck condition rating: Very Good (8 out of 9)
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Appraisal: Functionally obsolete
Sufficiency rating: 57.3 (out of 100)
- Average daily traffic (as of 2012)
- June 16, 2016: Updated by Evin Fairchild: bridge deck replaced in 2014
- February 10, 2015: Photos imported by Dave King
- March 19, 2012: New Street View added by Michael Goff
- K. A. Erickson
- Mike Goff - michael [dot] goff [at] hotmail [dot] com