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Tunnel

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UP - Shoshone Tunnel 1 (Garfield County, Colorado)
Built ca. 1883
Tunnel on Union Pacific Railroad
Open to traffic

UP - Shoshone Tunnel 2 (Garfield County, Colorado)
Built 1883
Tunnel on Union Pacific Railroad
Open to traffic

UP - South Bridge Bay Tunnel (Shasta County, California)
Built 1940
Tunnel under Bass Mountian Hills on Union Pacific Railroad
Open to traffic

UP - Spring Garden Tunnel (Plumas County, California)
Tunnel on Railroad (UP)
Open to traffic

UP - Summit Tunnel (Lane County, Oregon)
Built 1925
Tunnel on Union Pacific Railroad under Pengra Pass
Open to traffic

UP - Sweetwater Tunnel (Eagle County, Colorado)
Built 1932-4
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tennessee Pass Tunnel (Eagle County, Colorado)
Built 1945; unused since 1997
Railroad tunnel under Tennessee Pass north of Leadville on closed Union Pacific RR
Embargoed (unused but technically open)

UP - Thistle Tunnel (North Track) (Utah County, Utah)
Built 1983 to bypass Thistle Slide
Tunnel under Billies Mountain on UP RR
Open to traffic

UP - Thistle Tunnel (South Track) (Utah County, Utah)
Built 1983 to bypass Thistle Slide
Tunnel under Billies Mountain on UP RR
Open to traffic

UP - Toothrock Tunnel (Multnomah County, Oregon)
Built 1936 with relocation of RR due to Bonneville Dam construction
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel (Umatilla County, Oregon)
Tunnel on Union Pacific Railroad (La Grande Subdivision)
Open to traffic

UP - Tunnel (Malheur County, Oregon)
Abandoned tunnel on Union Pacific Railroad
Abandoned

UP - Tunnel 0 (Placer County, California)
Abandoned tunnel on Union Pacific Railroad
Derelict/abandoned

UP - Tunnel 1 (Placer County, California)
Built 1868
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 1 (Jefferson County, Colorado)
Built 1903; portal constructed on west end 1958
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 10 (Boulder County, Colorado)
Built 1903, wood lining burned 1943
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 11 (Boulder County, Colorado)
Built 1903
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 12 (Boulder County, Colorado)
Built 1903
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 13 (Boulder County, Colorado)
Built 1903
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 13 (Placer County, California)
Built 1868
Tunnel on Union Pacific Railroad
Open

UP - Tunnel 14 (Boulder County, Colorado)
Built 1903
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 15 (Jefferson County, Colorado)
Built 1903
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 15 (Placer County, California)
Built 1909
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 16 (Jefferson County, Colorado)
Built 1903
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 17 (Siskiyou County, California)
Built 1909
Tunnel under Under Dorris Hill on Union Pacific Railroad
Open to traffic

UP - Tunnel 17 (Boulder County, Colorado)
Built 1903
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 18 (Placer County, California)
Built 1909
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 18 (Siskiyou County, California)
Built 1909
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 18 (Boulder County, Colorado)
Built 1903
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 19 (Boulder County, Colorado)
Built 1903
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 2 (Jefferson County, Colorado)
Built 1903
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 20 (Boulder County, Colorado)
Built 1903
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 21 (Boulder County, Colorado)
Built 1903
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 22 (Boulder County, Colorado)
Built 1903
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 23 (Placer County, California)
Built 1909
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 23 (Boulder County, Colorado)
Built 1903
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 24 (Placer County, California)
Build 1910
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 24 (Boulder County, Colorado)
Built 1903
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 25 (Placer County, California)
Built 1910
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 25 (Boulder County, Colorado)
Built 1903
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 26 (Placer County, California)
Built 1909
Tunnel under Under Railroad on Union Pacific Railroad
Open to traffic

UP - Tunnel 26 (Gilpin County, Colorado)
Built 1903
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 27 (Placer County, California)
Built 1910
Tunnel on Union Pacific Railraod
Open to traffic

UP - Tunnel 28 (Gilpin County, Colorado)
Built 1903
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 28 (Placer County, California)
Built 1908
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 29 (Placer County, California)
Built 1909
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 29 (Gilpin County, Colorado)
Built 1903
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 3 (Placer County, California)
Built 1868; widened and double tracked 1921 & 1942
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 30 (Gilpin County, Colorado)
Built 1903
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 31 (Plumas County, California)
Tunnel under Cal Rte 89 on UP RR
Open to traffic

UP - Tunnel 34 (Placer County, California)
Built 1913
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 35 (Grand County, Colorado)
Built 1906-7
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 35 (Nevada County, California)
Built 1924
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 36 (Nevada County, California)
Built 1924
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 36 (Grand County, Colorado)
Built 1906-7
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 37 (Nevada County, California)
Built 1925
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 37 (Grand County, Colorado)
Built 1906-7
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 38 (Placer County, California)
Built 1924 by Central Pacific (later SP) Railroad
Tunnel on UP (former SP) Railroad
Open to traffic

UP - Tunnel 38 (Grand County, Colorado)
Built 1906-7
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 39 (Placer County, California)
Built 1924
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 39 (Grand County, Colorado)
Built 1906-7
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 4 (Placer County, California)
Built 1868; widened and double tracked 1921; widened 1942
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 4 (Jefferson County, Colorado)
Built 1903
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 40 (Grand County, Colorado)
Built 1906-7
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 41 (Placer County, California)
Built 1925
Tunnel under Donner Pass (Mount Judah) on Union Pacific Railroad
Open to traffic

UP - Tunnel 42 (Eagle County, Colorado)
Built 1907
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 5 (Boulder County, Colorado)
Built 1903
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 6 (Boulder County, Colorado)
Built 1903
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 7 (Boulder County, Colorado)
Built 1903
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 8 (Boulder County, Colorado)
Built 1903
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel No. 1 (Eureka County, Nevada)
Built1907
Tunnel on Railroad (UP)
Open to traffic

UP - Tunnel No. 1 (Kern County, California)
Tunnel under hillside on UP RR
Open to traffic

UP - Tunnel No. 10 (Kern County, California)
Built in 1876 by the SP Railroad
Tunnel on UP/BNSF railroads (formerly SP/ATSF)
Open to traffic

UP - Tunnel No. 11 (Lincoln County, Nevada)
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel No. 19 (Los Angeles County, California)
Built 1876
Tunnel under hillside on UP RR
Open to traffic

UP - Tunnel No. 2 (Kern County, California)
Built 1917
Tunnel under hillside on UP RR
Open to traffic

UP - Tunnel No. 3 (Morgan County, Utah)
Built 1927
Tunnel on Railroad (UP)
Open to traffic

UP - Tunnel No. 3 (Kern County, California)
Tunnel under hillside on UP RR
Open to traffic

UP - Tunnel No. 39 (Eureka County, Nevada)
Built 1909
Tunnel on Railroad (UP)
Open to traffic

UP - Tunnel No. 5 (Kern County, California)
Tunnel under hillside on UP RR
Open to traffic

UP - Tunnel No. 6 (Baker County, Oregon)
Built 1929
Tunnel
Open to traffic

UP - Tunnel No. 7 (Kern County, California)
Tunnel under hillside on UP RR
Open to traffic

UP - Tunnel No. 9 (Tehachapi Loop) (Kern County, California)
Built in 1876 by the SP Railroad to circumvent the extreme grade of the Tehachapi Mtns. In 1998 it was added as a Nat'l Historic Civil Enginnering Landmark
Tunnel under .73 mile loop crosses under itself on UP (former SP) Railroad
Open to traffic

UP - Tunnels No. 14-17 (Kern County, California)
4 tunnels under hillside on UP RR
Open to traffic

UP - Valley Subdivision Tunnel #1 (Shasta County, California)
Tunnel on UP RR
Open to traffic

UP - Valley Subdivision Tunnel #10 (Shasta County, California)
Tunnel on UP RR
Open to traffic

UP - Valley Subdivision Tunnel #2 (Shasta County, California)
Tunnel on UP RR
Open to traffic

UP - Valley Subdivision Tunnel #3 (Shasta County, California)
Tunnel on UP RR
Open to traffic

UP - Valley Subdivision Tunnel #4 (Shasta County, California)
Tunnel on UP RR
Open to traffic

UP - Valley Subdivision Tunnel #5 (Shasta County, California)
Tunnel on the UP
Tunnel on UP RR
Open to traffic

UP - Valley Subdivision Tunnel #6 (Shasta County, California)
Tunnel on UP RR
Open to traffic

UP - Valley Subdivision Tunnel #7 (Shasta County, California)
Tunnel on UP RR
Open to traffic

UP - Valley Subdivision Tunnel #8 (Shasta County, California)
Tunnel on UP RR
Open to traffic

UP - Valley Subdivision Tunnel #9 (Shasta County, California)
Tunnel on UP RR
Open to traffic

UP - Williams Loop Tunnel (Plumas County, California)
Built 1914
Tunnel under Railroad (UP) on Railroad (UP)
Open to traffic

UP - Yarmony Tunnel (Eagle County, Colorado)
Built 1932-4
Tunnel on Union Pacific Railroad
Open to traffic

UP Tunnel No. 11 (San Luis Obispo County, California)
Tunnel under hillside on UP RR
Open to traffic

UP Tunnel No. 17 Clark Tunnel (Placer County, California)
Tunnel under hillside on UP RR
Open to traffic

UP Tunnel No. 6 (San Luis Obispo County, California)
Tunnel under hillside on UP RR
Open to traffic

UP Tunnel No. 7 (San Luis Obispo County, California)
Tunnel under hillside on UP RR