List of tunnels in the United States
name location type length ( ft ) opened notes ref
Arch Cape Tunnel US 101 , 8 mi ( 13 km ) . south of Cannon Beach automobile 1,228.1 1937 goes through Arch Cape [ 23 ] [ 24 ]
Cape Creek Tunnel Lane County on US 101 automobile 714 1931 ? refs disagree over year and length 1,228.1 ' vs. 714 ' [ 25 ] [ 26 ]
Cornelius Pass Tunnel Portland railway abandoned 4,100 ( ? ) March 21 , 1911 now owned by State of Oregon , but maintained by PWRR ; closed by fire September 1994 - July 1998 [ 27 ] [ 28 ] [ 29 ] [ 30 ]
Cornell Tunnel No . 1 Portland automobile 497.1 1940 NW Cornell Road [ 31 ] [ 32 ]
Cornell Tunnel No . 2 Portland automobile 247.1 1941 NW Cornell Road [ 33 ] [ 34 ]
Dennis L. Edwards Tunnel Sunset Highway southwest of Vernonia automobile 772 1940 formerly called Sunset Tunnel [ 35 ] [ 36 ] [ 37 ] [ 38 ]
Elk Creek Tunnel Douglas County on OR 38 automobile 1,080.1 1938 ? refs disagree over year [ 39 ] [ 40 ]
Elk Rock Tunnel Clackamas County under OR 43 rail 1,396 1921 single track S-shaped route [ 41 ] [ 42 ]
Knowles Creek Tunnel Lane County on OR 126 automobile 1,430.2 1958 [ 43 ] [ 44 ]
Mitchell Point Tunnel Columbia River Gorge west of Hood River automobile , 2 lane 385 1915 closed in 1954 , demolished in 1966 , part of Historic Columbia River Highway [ 45 ]
Mosier Twin Tunnels Columbia River Gorge east of Mosier ( near The Dalles ) automobile , 2 lane 350 ( combined ) 1921 part of Historic Columbia River Highway [ 46 ]
Oneonta Tunnel Columbia River Gorge near Multnomah Falls automobile , 2 lane 125 1914 part of Historic Columbia River Highway [ 47 ]
Robertson Tunnel Portland light commuter rail twin tunnels 16,368 1998 MAX Light Rail
Rocky Butte Tunnel NE Rocky Butte Rd . Portland automobile 370.0 ? 1939 through Rocky Butte ; refs disagree over length [ 48 ] [ 49 ]
Salt Creek Tunnel Lane County on OR 58 automobile 904.9 1939 [ 50 ] [ 51 ]
Tooth Rock Tunnel I-84 near Cascade Locks State Park automobile interstate 827.1 ? 1936 where Historic Columbia River Highway goes through Tooth Rock ; refs disagree over length [ 52 ] [ 53 ]
Vista Ridge Tunnels Sunset Highway / US 26 , Portland automobile twin tunnels 1,001.0 1969 3 lanes each direction , 6% grade , curved [ 54 ]
Walcott Tunnel Washington County at 45°42′25″N 123°15′44″W / 45.70694°N 123.26222°W / 45.70694 ; -123.26222 railroad [ 55 ]
West Burnside Tunnel Portland automobile 230.0 1940 W Burnside Road [ 56 ] [ 57 ]
West Side CSO Tunnel Portland sewer 18,000 2006 Waterfront Park
Oregon
The following is a list of some tunnels in the United States of America. More tunnels may be found in each state than are included on this list.