Round Spring Bridge (Shannon County, Missouri)
Built 1930
Single open-spandrel arch over Spring Valley Creek on MO 19
Open to traffic on a paved road with no posted weight limits

Rush Creek Covered Bridge (Parke County, Indiana)
Built 1904 by W.M. Hendricks; rehabilitated 1977
Covered bridge over West Fork Rush Creek on CR W900N
Open to traffic

Rye Hill Road Bridge (Sebastian County, Arkansas)
Built 1941 by the Works Progress Administration
Concrete slab bridge over Prairie Creek on Rye Hill Road (CR 90)
Open to traffic

Sac River FM 128 Bridge (Greene County, Missouri)
Concrete arch bridge over Sac River on FM 128, southwest of Bois D'Arc
Open to one-lane traffic

Sac River FM 17 Bridge (Greene County, Missouri)
Concrete bridge over Sac River on Farm Road 17
Open to traffic

Saddle Barn Road Bridge (Lawrence County, Indiana)
Built 1905; rehabilitated 1988
Through truss bridge over Leatherwood Creek on Saddle Barn Road in Bedford
Open to traffic

Salamonie River Bridge (Wells County, Indiana)
Built ca. 1910; rehabilitated 1980
Through truss bridge over Salamonie River on CR 1100 South
Open to traffic

Sale Creek Bridge (Hamilton County, Tennessee)
Built 1954
Pony truss bridge over Sale Creek on Daugherty Ferry Road
Open to traffic

Salmon Creek Bridge (Clark County, Washington)
Built 1923
Concrete arch bridge over Salmon Creek on Old WA 503 in Meadow Glade
Open to traffic

Salt Creek IN 130 Bridge (Porter County, Indiana)
Built 1932
Concrete arch bridge over Salt Creek on IN 130
Open to traffic

Salt Creek US 40 Bridge (Howard County, Missouri)
Built 1941
Deck plate girder bridge over Salt Creek and the Katy Trail on US 40
Open to traffic

San Fernando Road Bridge over the Arroyo Seco (Los Angeles County, California)
Built 1913
Concrete arch bridge over Arroyo Seco Channel on San Fernando Road in Los Angeles
Open to traffic

San Francisco Bay Bridge (Alameda County, California)
Built 1936; rehabilitated 1962
Suspension and cantilever truss bridge over San Francisco Bay on I-80 in Oakland
Open to traffic; replacement bridge under construction

San Luis Bridge (Costilla County, Colorado)
Built 1910-11 by the M.F. Levy Construction Co.
Open-spandrel arch bridge over Culebra Creek on CR 19 in San Luis
Open to pedestrians only

San Pascual Ave Over the Arroyo Seco (Los Angeles County, California)
Built 1939
Bridge over Arroyo Seco Channel on San Pascual Ave Br in Los Angeles
Open to traffic

San Rafael Avenue over the Arroyo Seco (Los Angeles County, California)
Built 1922
Concrete arch bridge over Arroyo Seco Channel on San Rafael Avenue in Pasadena
Open to traffic

Sand Creek IN 3 Bridge (Jennings County, Indiana)
Built 1935; rehabilitated 1982
Through truss bridge over Sand Creek on IN 3
Open to traffic

Sand Creek US 31 Bridge (Jackson County, Indiana)
Built 1936; rehabilitated 1995
Through truss bridge over Sand Creek on US 31
Open to traffic

Seaford Bridge (Sussex County, Delaware)
Built 1925 by the Chicago Bascule Bridge Co.
Bascule bridge over Nanticoke River on Front Street in Seaford
Open to traffic

Seigrist's Mill Covered Bridge (Lancaster County, Pennsylvania)
Built 1885
Covered bridge over Big Chickies Creek on Seigrist Road
Open to traffic

Self Creek US 70 Bridge (Pike County, Arkansas)
Built 1949 by the D.F. Jones Construction Co. of Little Rock
Three-span open-spandrel arch bridge over Self Creek (Greeson Lake) on US 70 in Daisy
Open to traffic

Seminary Fork Bridge (Union County, Illinois)
Built 1984
Wooden deck bridge over Seminary Fork on Rhine Road, southwest of Alton Pass
Open to traffic

Seneca Park Road (Jefferson County, Kentucky)
Built ca. 1930
Concrete arch bridge over Middle Fork Beargrass Creek on Seneca Park Road in Louisville
Open to traffic

Shawnee Bridge (Warren County, Indiana)
Built 1905; rehabilitated 1980
Through truss bridge over Wabash River on CR 100 East
Open to traffic

Shawnee Ford Bridge (Franklin County, Missouri)
Built ca. 1920; rehabilitated 1990
Through truss bridge over Bourbeuse River on Shawnee Ford Road beyond the end of Route AN
Open to one-lane traffic with a 19 ton weight limit

Sheboygan River Bridge (Sheboygan County, Wisconsin)
Built 1995
Bascule bridge over Sheboygan River on S. 8th Street in Sheboygan
Open to traffic

Shell Rock Bridge (Butler County, Iowa)
Built 1915
Three-span arch bridge over Shell Rock River on Cherry Street in Shell Rock
Open to traffic

Shenk's Mill Covered Bridge (Lancaster County, Pennsylvania)
Built 1855; rehabilitated 1977
Covered bridge over Big Chickies Creek on Erisnan Road
Open to traffic

Shirley Bridge (Van Buren County, Arkansas)
Built 1908 by the Wisconsin Bridge & Iron Co. as a railroad bridge; rehabilitated 1988
Through truss bridge over Middle Fork Little Red River on River Road (CR 125) just outside of Shirley in Shirley
Open to one-lane traffic

Silver Creek IN 403 Bridge (Clark County, Indiana)
Built ca. 1940; rehabilitated 1976
Through truss bridge over Silver Creek on IN 403
Open to traffic

Sinking Creek Bridge (Shannon County, Missouri)
Built 1925
Three-span open-spandrel arches over Sinking Creek on MO 19 north of Round Spring
Open to traffic on a paved road, but scheduled for future rehabilitation

Sixth Street / Whittier Blvd over the Los Angeles River (Los Angeles County, California)
Built 1932
Steel arch bridge over Los Angeles River on Sixth Street in Los Angeles
Open to traffic

Sixth Street Bridge (Minnehaha County, South Dakota)
Built 1975
Bridge over Big Sioux Rv on Sixth Street E of Phillips Ave. in Sioux Falls
Open to traffic

Skiberene Bridge (Clatsop County, Oregon)
Built 1930
Stringer bridge over Necanicum River on U.S. 101/U.S. 26
Open to traffic

Smith Covered Bridge (Rush County, Indiana)
Built 1877 by A. M. Kennedy; rehabilitated 1996
Covered bridge over Flatrock River on CR 150 North
Open to traffic

Smithfield Street Bridge (Allegheny County, Pennsylvania)
Built 1883 under the direction of engineer Gustav Lindenthal
Two-span lenticular through truss bridge over Monongahela River on Smithfield Street in Pittsburgh
Open to four lanes of traffic

Smithland Bridge (Livingston County, Kentucky)
Built 1931; rehabilitated 1954
Through truss bridge over Cumberland River on US 60 at Smithland
Open to traffic

Smoky Hill River Bridge (McPherson County, Kansas)
Built 1919; rehabilitated 1989
Through truss bridge over Smoky Hill River on Syensk Road
Open to traffic

Smoky Hill River K-147 Bridge (Trego County, Kansas)
Built 1952; rehabilitated 1993
Steel through arch over Smoky Hill River on K-147 at Cedar Bluff Lake Spillway
Open to traffic

Snag Creek Bridge (Cedar County, Missouri)
Built ca. 1910
Pony truss bridge over Snag Creek on CR 1101
Open to traffic

Soledad Canyon Road over the Santa Clara River (Los Angeles County, California)
Built 1952
Steel stringer bridge over Santa Clara River on Soledad Cyn Road
Open to traffic

Sorrel Creek Bridge (Garland County, Arkansas)
Built 1930 by the West Arkansas Construction Co. of McAlister, Oklahoma
Small concrete arch bridge over Sorrel Creek on AR 7
Open to two-lane traffic

Soto Street over Huntington Drive South (Los Angeles County, California)
Built 1936
Girder bridge over Mission Rd-Huntington So on Soto Street in Los Angeles
Open to traffic

Soto Street over Valley Blvd. (Los Angeles County, California)
Built 1936
Steel stringer bridge over Valley Blvd/Sptco on Soto Street in Los Angeles
Open to traffic

South Big River Bridge (St. Francois County, Missouri)
Built 1924; made obsolete by new bridge in 1957
Through truss bridge over Big River on Old US 67 in Desloge
Open to two-lane traffic

South Boston Road Bridge (Washington County, Indiana)
Built ca. 1930
Pony truss bridge over Middle Fork Blue River on Canton/S. Boston
Open to traffic

South Branch Little Wolf River Bridge (Waupaca County, Wisconsin)
Built 1907
Stone arch bridge over South Branch Little Wolf River on Mill Street in Scandinavia
Open to traffic

South Fork Blue River IN 60 Bridge (Washington County, Indiana)
Built 1937
Concrete arch bridge over South Fork Blue River on IN 60 in New Pekin
Open to traffic

South Fork Oats Creek Bridge (Jackson County, Arkansas)
Built ca. 1930; replaced 2005
Lost concrete arch bridge over South Fork Oats Creek on Bradford Road (CR 1)
No longer exists

South Fork Pottawatomie Creek Bridge (Anderson County, Kansas)
Built 1934
Concrete pony arch bridge over South Fork Pottawatomie Creek, 0.5 mi. south and 3.7 mi. east of Garnett
Open to traffic

South Fork Powder River Bridge (Johnson County, Wyoming)
Built 1932
Deck truss bridge over South Fork Powder River on I-25 West Service Road (Old US 87) at Milepost 246.30
Open to traffic

South Fork US 421 Bridge (Clinton County, Indiana)
Built 1940; rehabilitated 1985
Pony truss bridge over South Fork Wildcat Creek on US 421
Open to traffic

South Hamma Hamma River Bridge (Mason County, Washington)
Built 1924
Rainbow arch bridge over Hamma Hamma River on US 101
Open to traffic

South Lafave River AR 7 Bridge (Perry County, Arkansas)
Built 1933 by McEachin and McEachin, Inc., of Little Rock
Two-span pony truss bridge over South Fourche Lafave River on AR 7
Open to two-lane traffic

South River CR 402 Bridge (Marion County, Missouri)
Built ca. 1930, replacing an earlier bridge
Pony truss bridge over South River on CR 402, east of Palmyra
Open to one-lane traffic

South Umpqua River I-5 Bridge (Douglas County, Oregon)
Built 1965; rehabilitated 1983
Deck truss bridge over South Umpqua River on Southbound I-5
Open to traffic

Spencer Creek Covered Bridge (St. Charles County, Missouri)
Built 1976 by Roger Adams
Replica covered bridge over Spencer Creek at Spencer Creek Subdivision in St. Peters
Open to traffic

Spencerville Covered Bridge (De Kalb County, Indiana)
Built 1873 by John McKay
Covered bridge over Saint Joseph River on CR 68
Open to traffic

Spillman Creek Bridge (Lincoln County, Kansas)
Built ca. 1930
Stone arch bridge over Spillman Creek, 3.5 mi. south and 0.3 mi. east of Ash Grove
Open to traffic

Spring Branch Bridge (Benton County, Arkansas)
Built 1932
Small concrete bridge over Spring Branch on AR 72 in Lundell
Open to traffic

Spring Creek 1900N Bridge (Iroquois County, Illinois)
Built 1916
Through truss bridge over Spring Creek on 1900N Road
Open to traffic

Spring Creek Bridge (Lincoln County, Kansas)
Built ca. 1930
Pony truss bridge over Spring Creek, 4.0 mi. south and 3.4 mi. east of Vesper
Open to traffic

Spring Creek CR 519 Bridge (Maries County, Missouri)
Built ca. 1930
Concrete tee beam bridge over Spring Creek on CR 519
Open to traffic

Spring Creek Road Bridge (Ellis County, Texas)
Built 1890
Through truss bridge over Grove Creek on Spring Creek Road in Waxahachie
Preserved awaiting full restoration

Spring Street Bridge (Chippewa County, Wisconsin)
Built 1916; Placed on NRHP 1982
Rainbow arch bridge over Duncan Creek on Spring Street in Chippewa Falls
Open to traffic

Spring Valley Bridge (Bureau County, Illinois)
Built 1934; rehabilitated 1989
Five-span through truss bridge over the Illinois River on IL 89 south of Spring Valley
Open to two-lane traffic

St. Elmo Bridge (Chaffee County, Colorado)
Built 1953
Wooden deck bridge over Chalk Creek on CR 267 at St. Elmo
Open to one-lane traffic

St. Francis River Bridge Route W (St. Francois County, Missouri)
Built 1948
Concrete tee beam bridge over St Francis River on Route W
Open to traffic

St. Paul Avenue Lift Bridge (Milwaukee County, Wisconsin)
Built 1966
Bridge over Milwaukee River on St. Paul Avenue in Milwaukee
Open to traffic

State Bridge 1788 (Carroll County, Indiana)
Built 1935; rehabilitated 1990
Bridge over Us 421 on North Street in Delphi
Open to traffic

State Hospital Entrance Bridge (Jefferson County, Indiana)
Built 1930
Concrete arch bridge over the Madison Railroad at Madison State Hospital, just off IN 7
Open to one-lane light traffic

State Street Bridge (Cook County, Illinois)
Built 1949
Bascule bridge over Main Branch Chicago River on State Street in Chicago
Open to traffic

Steel Bridge (Multnomah County, Oregon)
Built 1912
Through truss bridge over Willamette River on OR 99W in Portland
Open to traffic

Stewart Park Road Bridge (Douglas County, Oregon)
Built 1946
Truss bridge over South Umpqua River on Stewart Park Road in Roseburg
Open to traffic

Stockheughter Covered Bridge (Franklin County, Indiana)
Built 1887 by the Smith Bridge Co.; rehabilitated 1988
Covered bridge over Salt Creek on Enochsburg Road
Open to traffic

Stoddard County Road 307 Bridge No. 2 (Stoddard County, Missouri)
Built 1922
Concrete tee beam bridge over Wolf Creek on CR 307 (Old MO 25)
Open to traffic

Stoddard County Road 307 Bridge No. 3 (Stoddard County, Missouri)
Built 1922
Concrete tee beam bridge over a branch of Wolf Creek on CR 307 (Old MO 25)
Open to traffic

Stoddard County Road 307 Bridge No. 4 (Stoddard County, Missouri)
Built 1922
Concrete tee bridge over an unnamed creek on CR 307 (Old MO 25) just north of MO 91
Open to traffic

Stonelick Covered Bridge (Clermont County, Ohio)
Built 1878; rehabilitated 1971
Covered bridge over Stonelick Creek on Stonelick Williams Corner Road (CR 116)
Open to traffic

Stones Branch Bridge (Bollinger County, Missouri)
Built 1922
Pony truss bridge over Stones Branch on MO 51, near the Route A intersection
Open to two-lane traffic on a paved road

Stony Creek Bridge (Dinwiddie County, Virginia)
Built 1926
Rainbow arch bridge over Stony Creek on Southbound US 1
Open to two lanes of southbound traffic

Stouts Creek Arch Bridge (Iron County, Missouri)
Built 1928
Open-spandrel arch bridge over Stouts Creek on MO 72 above Lake Killarney
Open to traffic

Strawberry River US 167 Bridge (Sharp County, Arkansas)
Built 1928 by Fred Luttjohann; widened in 1955
Three-span open-spandrel arch bridge over Strawberry River on US 167
Open to two-lane traffic

Stucker Creek IN 3 Bridge (Scott County, Indiana)
Built 1939; rehabilitated 1979
Pony truss bridge over Stucker Creek on IN 3
Open to traffic

Sugar Creek 331st Street Bridge (Cass County, Missouri)
Built ca. 1920
Pony truss bridge over Sugar Creek on 331st Street
Open to traffic

Sunny Valley Covered Bridge (Josephine County, Oregon)
Built 1920; rehabilitated 2001
Covered bridge over Grave Creek on Sunny Valley Loop
Open to traffic

Sunshine Skyway Bridge (Pinellas County, Florida)
Opened to traffic April 20, 1987
Cable-stayed bridge over Tampa Bay on I-275/US 19 at Saint Petersburg
Open to four lanes of traffic

Surgoinsville Bridge (Hawkins County, Tennessee)
Built 1955
Pratt Truss bridge over Holston River on County Road 2604 in Surgoinsville
Open to traffic

Table Rock Lake MO 39 Bridge (Barry County, Missouri)
Built 1958
Cantilevered through truss bridge over Table Rock Lake (White River) on MO 39 near Shell Knob
Open to two-lane traffic

Tacoma Narrows Bridge (Pierce County, Washington)
Built 1949
Suspension bridge over Tacoma Narrows on WA 16 in Tacoma
Open to traffic

Tama Lincoln Highway Bridge (Tama County, Iowa)
Built 1915 by Paul Kingsley
Concrete bridge over Mud Creek on 5th Street E in Tama
Open to traffic

Temple Street over Figuora Street (Los Angeles County, California)
Built 1940
Bridge over Figueroa Street on Temple Street in Los Angeles
Open to traffic

Tennessee Avenue Bridge (Allen County, Indiana)
Built 1912; rehabilitated 1998
Two-span arch bridge over St. Joseph River on Tennessee Avenue in Fort Wayne
Open to traffic

Terre Noire Creek US 67 Bridge (Clark County, Arkansas)
Built 1931 by the Virginia Bridge & Iron Co. of Roanoke, Virginia
Pony truss bridge over Terre Noire Creek on US 67
Open to traffic

Terre Rouge Creek US 67 Bridge (Hempstead County, Arkansas)
Built 1931 by the Virginia Bridge & Iron Co.
Pony truss bridge over Terre Rouge Creek on US 67
Open to two-lane traffic

The Old Road over the Santa Clara River (Los Angeles County, California)
Built 1928
Steel stringer bridge over Santa Clara River on The Old Road in Santa Clarita
Open to traffic

Theodosia Bridge (Ozark County, Missouri)
Built 1941; rehabilitated 1951
Ten-span through truss bridge over Little North Fork White River (arm of Bull Shoals Lake) on US 160 near Theodosia
Open to two-lane traffic

Third Avenue Bridge (New York County, New York)
Built 1900; rehabilitated 1957
Swing bridge over Harlem River on Third Avenue in New York
Open to traffic

Third Street Bridge (Ottawa County, Kansas)
Built 1915
Concrete arch bridge over Pipe Creek on 3rd Street in Minneapolis
Open to traffic

Timpas Bridge (Otero County, Colorado)
Built 1924, rehabilitated in 1966
Through truss bridge over Timpas Creek on CR N, just off US 350
Open to one-lane traffic