List of tunnels documented by the Historic American Engineering Record in Oregon

This is a list of tunnels documented by the Historic American Engineering Record in the US state of Oregon. ^[1]

Tunnels

Survey No.	Name (as assigned by HAER)	Built	Documented	Carries	Crosses	Location	County	Coordinates
OR-3	Portland and Southwestern Railroad Tunnel	1910	1982	Portland and Southwestern Railroad	Nehalem Divide	Chapman	Columbia	45°49′56″N123°03′02″W / 45.83222°N 123.05056°W / 45.83222; -123.05056 (Portland and Southwestern Railroad Tunnel)
OR-36-L	Historic Columbia River Highway, Oneonta Tunnel	1914	1995	Historic Columbia River Highway	Oneonta Point	Troutdale	Multnomah	45°35′23″N122°04′29″W / 45.58972°N 122.07472°W / 45.58972; -122.07472 (Historic Columbia River Highway, Oneonta Tunnel)
OR-36-O	Historic Columbia River Highway, Toothrock Tunnel	1932	1995	Historic Columbia River Highway	Toothrock	Troutdale	Multnomah	45°38′18″N121°56′09″W / 45.63833°N 121.93583°W / 45.63833; -121.93583 (Historic Columbia River Highway, Toothrock Tunnel)
OR-36-R	Historic Columbia River Highway, Mitchell Point Tunnel and Viaduct	1915	1995	Historic Columbia River Highway	Lower Mitchell Point	Troutdale	Multnomah	45°42′15″N121°37′01″W / 45.70417°N 121.61694°W / 45.70417; -121.61694 (Historic Columbia River Highway, Mitchell Point Tunnel and Viaduct)
OR-36-T	Historic Columbia River Highway, Mosier Twin Tunnels	1920	1995	Historic Columbia River Highway	Unnamed point	Troutdale	Multnomah	45°41′06″N121°25′18″W / 45.68500°N 121.42167°W / 45.68500; -121.42167 (Historic Columbia River Highway, Mosier Twin Tunnels)
OR-92	Southern Pacific Railroad Natron Cutoff, Tunnel 3	1925	1997	Southern Pacific Railroad, Cascade Subdivision	Pengra Pass	Odell Lake	Klamath	43°35′21″N122°03′07″W / 43.58917°N 122.05194°W / 43.58917; -122.05194 (Southern Pacific Railroad Natron Cutoff, Tunnel 3)
OR-93	Southern Pacific Railroad Natron Cutoff, Tunnel 5	1927	1997	Southern Pacific Railroad, Cascade Subdivision	Unnamed point	McCredie Springs	Lane	43°37′18″N122°09′23″W / 43.62167°N 122.15639°W / 43.62167; -122.15639 (Southern Pacific Railroad Natron Cutoff, Tunnel 5)
OR-94	Southern Pacific Railroad Natron Cutoff, Tunnel 22	1910	1997	Southern Pacific Railroad, Cascade Subdivision	Unnamed ridge	Oakridge	Lane	43°44′59″N122°29′04″W / 43.74972°N 122.48444°W / 43.74972; -122.48444 (Southern Pacific Railroad Natron Cutoff, Tunnel 22)
OR-95	Southern Pacific Railroad Natron Cutoff, Tunnel 23	1910	1997	Southern Pacific Railroad, Cascade Subdivision	Unnamed point	Westfir	Lane	43°47′36″N122°32′46″W / 43.79333°N 122.54611°W / 43.79333; -122.54611 (Southern Pacific Railroad Natron Cutoff, Tunnel 23)

See also

• List of bridges documented by the Historic American Engineering Record in Oregon

References

1. Library of Congress. "Prints and Photographs Online Catalog: Historic American Buildings Survey/Historic American Engineering Record/Historic American Landscapes Survey" . Retrieved December 3, 2022.