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Overview.

Photo taken by Historic American Engineering Record

Overview: Deck truss bridge over Lake Union on WA 99 in Seattle
Location: Seattle, King County, Washington
Status: Open to traffic
History: Built 1931
Builders: - American Bridge Co. of New York (Steel Fabrication & Erection)
- Jacobs & Ober (Design Firm)
- N. Nygren (Contractor)
- Pacific Bridge Co. of Oakland, California (Contractor)
Design: Cantilevered deck truss
Dimensions: Length of largest span: 799.9 ft.
Total length: 2,955.2 ft. (0.6 mi.)
Deck width: 56.4 ft.
Also called: George Washington Memorial Bridge
Lake Union Bridge
Approximate latitude, longitude: +47.64666, -122.34722 (decimal degrees)
47°38'48" N, 122°20'50" W (degrees°minutes'seconds")
Approximate UTM coordinates: 10/549026/5277236 (zone/easting/northing)
USGS topographic map: Seattle North
Inventory number: BH 34298 (Bridgehunter.com ID)
Inspection (as of 08/2011): 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: 44.4 (out of 100)
Average daily traffic (as of 2010): 69,463