Facts 

Overview
Tunnel under Lake Keechelus Snowshed on I-90
Location
Kittitas County, Washington
Status
Open to traffic
History
Built 1950
Design
Tunnel
Dimensions
Total length: 500.0 ft.
Recognition
Posted to the National Register of Historic Places on May 24, 1995
Inventory numbers
NRHP 95000627 (National Register of Historic Places reference number)
BH 34355 (Bridgehunter.com ID)
Inspection
Average daily traffic (as of 2002)
11,553

Categories 

Built 1950 (244)
Built during 1950s (1,399)
I-90 (15)
Kittitas County, Washington (10)
NR-listed (1,469)
Open (21,591)
Owned by state (6,524)
Total length 500-1000 feet (996)
Tunnel (253)
Washington (541)