Bridgehunter.com | I-5 - Lake Washington Ship Canal Bridge

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Photos

Looking east from the air

Universite Bridge in the background

Photo taken by Jann Mayer in May 2013

License: Creative Commons Attribution (CC BY)

Overview: Deck truss bridge over Lake Washington Ship Canal on I-5 in Seattle
Location: Seattle, King County, Washington
Status: Open to traffic
History: Built 1962
Builders: - Allied Structural Steel Co. of Chicago, Illinois (Iron/Steel Manufacturer)
- Ed Wilkerson (Engineer)
- George H. Andrews (Engineer)
- MacRae Brothers (Contractor)
- S.S. Mullen Inc. (Contractor)
- Scheumann & Johnson (Contractor)
Design: Continuous Warren deck truss
Dimensions: Length of largest span: 551.9 ft.
Total length: 4,429.4 ft. (0.8 mi.)
Deck width: 173.9 ft.
Approximate latitude, longitude: +47.65287, -122.32248 (decimal degrees)
47°39'10" N, 122°19'21" W (degrees°minutes'seconds")
Approximate UTM coordinates: 10/550877/5277941 (zone/easting/northing)
Quadrangle map:: Seattle North
Inventory number: BH 34301 (Bridgehunter.com ID)
Inspection (as of 07/2015): Deck condition rating: Satisfactory (6 out of 9)
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Good (7 out of 9)
Appraisal: Functionally obsolete
Sufficiency rating: 68.7 (out of 100)
Average daily traffic (as of 2012): 187,213