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Southern Pacific Railroad

Reporting mark: SP
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UP - Sabine River Bridge (Logansport) (De Soto Parish, Louisiana)
Through truss bridge over Sabine River on Southern Pacific Railroad
Open

UP - Sacramento Arm Bridge (Shasta County, California)
Built 1939
Warren deck truss bridge over Sacramento Arm of Lake Shasta on Union Pacific Railroad
Open to traffic

UP - Sacramento River Bridge (Tehama County, California)
Built 1898, 1901 Approach Rehabilitation, 1929 Approach truss replacments
Pratt through truss bridge over Sacramento River on Union Pacific Railroad
Open to traffic

UP - Sacramento River Bridge (Siskiyou County, California)
Built 1901
Pin-connected Pratt through truss bridge over Sacramento River on Union Pacific Railroad
Open to traffic

UP - Sacramento River Bridge (Shasta County, California)
Built 1901
Camelback through truss bridge over Sacramento River on Union Pacific Railroad
Open to traffic

UP - Sacramento River Bridge (Shasta County, California)
Built 1901
Pratt through truss bridge over Sacramento River on Union Pacific Railroad
Open to traffic

UP - Sacramento River Bridge (Shasta County, California)
Built 1901
Pratt through truss bridge over Sacramento River on Union Pacific Railroad
Open to traffic

UP - Salt Creek Bridge (Shasta County, California)
Built 1942
Warren deck truss with all verticals bridge over Salt Creek (Shasta Lake) on Union Pacific Railroad
Open to traffic

UP - Salt Creek Bridge (Riverside County, California)
Deck plate girder bridge over Salt Creek on Union Pacific Railroad
Open to traffic

UP - Salt Creek Bridge (Limestone County, Texas)
Built 1912
Closed-spandrel arch bridge over Salt Creek on Road
Open to traffic

UP - Salt Creek Trestle (Lane County, Oregon)
Built in 1924
Steel stringer bridge over Salt Creek & Oregon Route 58 on Union Pacific Railroad
Open to traffic

UP - Salt River Bridge (Maricopa County, Arizona)
Built 1915
Pratt through truss bridge over Salt River on UP Railroad and Amtrak in Tempe
Open to traffic

UP - San Antonio Pony Truss Turntable (Bexar County, Texas)
Warren pony truss bridge over Pit on Union Pacific Railroad
Open to traffic

UP - San Fernando Tunnel (Los Angeles County, California)
Built 1875
Tunnel on Union Pacific Railroad
Open to traffic

UP - San Gabriel River Bridge (Bellflower) (Los Angeles County, California)
Built 1963
Lost Bridge over San Gabriel River on Pacific Electric Railway
Abandoned

UP - San Jacinto River Bridge (Barrett) (Harris County, Texas)
Through truss bridge over San Jacinto River on Railroad
Open to traffic

UP - San Joaquin River Bridge (San Joaquin County, California)
Warren through truss bridge over San Joaquin River on Railroad (UP)
Open to traffic

UP - San Joaquin River Bridge (Madera County, California)
Warren deck truss bridge over San Joaquin River on Union Pacific Railroad
Open to traffic

UP - San Marcos River Bridge (Guadalupe County, Texas)
Through truss bridge over San Marcos River on Railroad
Open

UP - Sandy Fork Creek Bridge (Gonzales County, Texas)
Built 1914
Pratt through truss bridge over Sandy Fork Creek on Union Pacific Railroad Co,, Glidden Subdivision
Open

UP - Santa Ana River Viaduct (Riverside County, California)
Built 1904
Closed-spandrel arch bridge over Santa Ana River on Union Pacific Railroad
Open to traffic

UP - Santiam River Bridge (Marion County, Oregon)
Built 1906
Pratt through truss bridge over Santiam River on Union Pacific Railroad in Jefferson
Open to traffic

UP - Sespe Creek Bridge (Ventura County, California)
Built 1902
Through truss bridge over Sespe Creek on Union Pacific Railroad in Fillmore
Open to traffic

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 - Springfield Bridge (Lane County, Oregon)
Built 1910-11, Parker span built 1925
Parker through truss bridge over Willamette River on Union Pacific Railroad in Springfield
Open to traffic

UP - St. Mary's Street Underpass (N) (Bexar County, Texas)
Built 1936 for the T&NO Railroad
Deck plate girder over St. Mary's Street on UP (T&NO) Railroad
Open to traffic

UP - Stanislaus River Bridge (Ripon) (Stanislaus County, California)
Deck plate girder bridge over Stanislaus River on BNSF Railraod
Open to traffic

UP - Stenner Creek Trestle (San Luis Obispo County, California)
Built 1894
Deck plate girder bridge over Stenner Creek/Stenner Creek Road on Union Pacific Railroad/Amtrak
Open to traffic

UP - Stone Avenue Overpass (Pima County, Arizona)
Built 1936
Concrete rigid frame bridge over Stone Avenue on Union Pacific Railroad (formerly Southern Pacfic Railroad)
Open to traffic

UP - Stone Culvert (Limestone County, Texas)
Stone culvert bridge over Unknown Stream on Railroad
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 - Sycamore Creek Bridge (Tarrant County, Texas)
Built 1906
Pratt through truss bridge over Sycamore Creek on Union Pacific Railroad
Open to traffic

UP - Sycamore Creek Bridge (E) (Kinney County, Texas)
Six-panel Pratt through truss and six-panel Warren through truss with all verticals bridge over Sycamore Creek on railroad
Open

UP - Sycamore Creek Bridge (W) (Val Verde County, Texas)
Warren through truss with all verticals bridge over Sycamore Creek on Railroad
Open

UP - Tehuacana Creek Bridge (Limestone County, Texas)
Pony/through plate girder bridge over Tehuacana Creek on 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 - Tijiguas Trestle (Santa Barbara County, California)
Deck plate girder bridge over Arroyo Hondo Creek on Southern Pacific RR Coast Line
Open to traffic

UP - Timber Creek Bridge (McLean County, Illinois)
Built 1902
Deck plate girder bridge over Timber Creek on Union Pacific Railway (former Southern Pacific))
Open

UP - Trinity River Bridge (Rochester Park) (Dallas County, Texas)
Warren through truss bridge over Trinity River on Railroad (UP)
Open to traffic

UP - Truckee River Bridge (Washoe County, Nevada)
Deck plate bridge over Truckee River on Union Pacific Railroad
Open to traffic

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 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 16 (Jefferson County, Colorado)
Built 1903
Tunnel 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 (Placer County, California)
Built 1908
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 28 (Gilpin County, Colorado)
Built 1903
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 (Jefferson 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 34 (Grand County, Colorado)
Tunnel on Union Pacific Railroad
Open to traffic

UP - Tunnel 34 (Placer County, California)
Built 1913
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 35 (Grand County, Colorado)
Built 1906-7
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 (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