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Battery Street Tunnel


Approach View Of South Tunnel Portal, Looking East From Southbound Lanes.

Photo taken by Historic American Engineering Record

View photos at Library of Congress

BH Photo #197274

Street View 


Tunnel under city streets on WA 99 in Seattle
King County, Washington
Replaced by a new bridge
Built 1954
Total length: 2,140.2 ft. (0.4 mi.)
Approximate latitude, longitude
+47.61892, -122.34361   (decimal degrees)
47°37'08" N, 122°20'37" W   (degrees°minutes'seconds")
Approximate UTM coordinates
10/549322/5274154 (zone/easting/northing)
Quadrangle map:
Seattle South
Average daily traffic (as of 2010)
Inventory number
BH 34261 (Bridgehunter.com ID)
Inspection report (as of March 2015)
Overall condition: Fair
Superstructure condition rating: Satisfactory (6 out of 9)
Substructure condition rating: Satisfactory (6 out of 9)
Deck condition rating: Satisfactory (6 out of 9)
Sufficiency rating: 70.2 (out of 100)
View more at BridgeReports.com

Update Log 

  • April 12, 2011: New photos from K. A. Erickson

Related Bridges 


  • K. A. Erickson
  • HAER WA-184 - Alaskan Way Viaduct and Battery Street Tunnel, Seattle, King, WA


Battery Street Tunnel
Posted May 15, 2021, by Robert Petersen (heyrob [at] usa [dot] net)

Posted 12/10/2019 HistoryLink.org Essay 20937

At 10 p.m. on Friday, February 1, 2019, the Battery Street Tunnel, which connects the Alaskan Way Viaduct to Aurora Avenue underneath Seattle's Belltown neighborhood, is permanently closed to traffic. Along with the venerable Alaskan Way Viaduct, both having been replaced by the new State Route 99 tunnel, also known as the Alaskan Way Viaduct replacement tunnel, is a bored highway tunnel, 2-miles long,in a double-decker tunnel configuration which carries a section of State Route 99 under Downtown Seattle from SoDo in the south to South Lake Union in the north. It opened to traffic on February 4, 2019.

Battery Street Tunnel
Posted April 9, 2019, by Anonymous

Battery Street Tunnel is officially closed. The new SR-99 Tunnel has been opened replacing the Battery Street Tunnel.