Facts 

Overview
Tunnel under Tooth Rock on I-84
Location
Multnomah County, Oregon
Status
Open to traffic
History
Built 1936
Design
Tunnel
Dimensions
Total length: 827.1 ft.
Inventory number
BH 30117 (Bridgehunter.com ID)

Categories 

Built 1936 (483)
Built during 1930s (5,130)
I-84 (6)
Multnomah County, Oregon (35)
Open (21,590)
Oregon (370)
Owned by state (6,524)
Total length 500-1000 feet (996)
Tunnel (253)