Structurally deficient

Saville Covered Bridge (Perry County, Pennsylvania)
Built 1903
Covered bridge over Buffalo Creek on PA 4001
Open to traffic

Scenic Bridge (Mineral County, Montana)
Built 1928; rehabilitated 1965
Deck truss bridge over Clark Fork on Old US 10 (CR 012)
Open to traffic

Schell City Bridge (Vernon County, Missouri)
Built 1906
Through truss bridge over Osage River on Rockville Road/Old River Road north of Schell City
Closed to all traffic

Schilpp Road Bridge (Lee County, Illinois)
Built 1915; relocated August 2006
Relocated pony truss bridge formerly over Five Mile Branch on Schilpp Road
Awaiting reconstruction at a site near Franklin Grove

Schomberg Road Bridge (Warren County, Missouri)
Built 1908; replaced 2006
Bedstead pony truss bridge over Water Run Creek on Schomberg Road
Replaced by new bridge

Scioto River CR 4 Bridge (Pickaway County, Ohio)
Built 1914 by the Oregonia Bridge Co.; rehabilitated 1983
Through truss bridge over Scioto River on CR 4
Open to traffic

Scioto-Darby Road Bridge (Pickaway County, Ohio)
Built 1910 by the The Oregonia Bridge Co., Lebanon, Oh.; rehabilitated 1986
Through truss bridge over Big Darby Creek on Scioto-Darby Road (CR 22)
Open to traffic

Scipio Covered Bridge (Jennings County, Indiana)
Built 1886; rehabilitated 1984
Covered bridge over Sand Creek on CR 575W
Open to traffic

Scottsboro Bridge (Jackson County, Alabama)
Built 1930
Cantilevered through truss bridge over Tennessee River on AL 35 at Scottsboro
Open to traffic

Seaton Bridge (Whitfield County, Georgia)
Built 1921 by the Champion Bridge Co.
Steel stringer bridge over Mills Creek on Seaton Loop Road east of Cohutta, GA
Open to traffic

Second Clark Lane Bridge (Union County, Illinois)
Built 1977
Wooden deck bridge over a branch of Dutch Creek on Clark Lane (TR 72)
Open to one-lane traffic with a 7 ton weight limit

Second Creek Road Bridge (Clay County, Missouri)
Built or relocated here ca. 1970
Pony truss bridge over Second Creek on Second Creek Road at Smithville
Open to two-lane traffic

Second Mill Creek Bridge (Reynolds County, Missouri)
Built 1921
Concrete slab bridge with ballusters on CR 360 (Old MO 21) east of Lesterville
Open to traffic with a 5 ton weight limit

Second Street Bridge (Jefferson County, Missouri)
Concrete bridge over Tanyard Branch on Second Street in De Soto
Open to two-lane traffic

Seilbeck Road Bridge (Massac County, Illinois)
Wooden bridge over the ICRR on Seilbeck Road (TR 93) north of Metropolis
Open to one-lane traffic

Seisemore Road Bridge (Deschutes County, Oregon)
Built 1914
Concrete arch bridge over Tumalo Irrigation Canal on Seisemore Road
Open to traffic

Seneca Bridge (La Salle County, Illinois)
Built 1932; rehabilitated 1986
Four-span through truss bridge over the Illinois River on IL 170 at Seneca
Open to two-lane traffic

Seven Mile Creek TR 331 Bridge (Preble County, Ohio)
Built 1906 by the Indiana Bridge Co. of Muncie, In.
Through truss bridge over Seven Mile Creek on TR 331
Open to traffic

Seven Mile Creek TR 333 Bridge (Preble County, Ohio)
Built 1931 by the Brookville Bridge Co. of Brookville, Oh.
Through truss bridge over Seven Mile Creek on TR 333
Open to traffic

Sevenmile Bridge (Mineral County, Colorado)
Built 1935; relocated 1981
Deck truss bridge over the Rio Grande at the entrance to Marshall Park Campground, just off CO 149
Open to traffic

Seventh Avenue Bridge (Langlade County, Wisconsin)
Built 1935
Stringer bridge over Spring Brook on 7th Avenue in Antigo
Open to traffic

Severn's Bridge (Gibson County, Indiana)
Built 1908 by the Indiana Bridge Co.
Through truss bridge over Patoka River on Old IN 65
Closed to all traffic

Sewalls Falls Road Bridge (Merrimack County, New Hampshire)
Built 1915
Truss bridge over Merrimack River on Sewalls Falls Road in Concord
Open to traffic

Shackelford Bridge (Cooper County, Missouri)
Built 1913
Through truss bridge over Lamine River on Shackelford Bridge Road
Open to traffic

Shaw Road Bridge (Jones County, Iowa)
Built 1924; rehabilitated 1954
Two-span through truss bridge over Wapsipinicon River on Shaw Road
Open to traffic

Shaytown Road Bridge (Eaton County, Michigan)
Built 1903
Warren through truss bridge over Thornapple Creek on Shaytown Road in Vermontville
Due to be replaced, current status unknown

Shelby Street Bridge (Davidson County, Tennessee)
Built 1907-09; rehabilitated for pedestrian use in 2003
Three-span through truss bridge over Cumberland River on Shelby Street in downtown Nashville
Open to pedestrians only

Shelbyville Cemetery Bridge (Shelby County, Illinois)
Wooden deck bridge over a gulley in Shelbyville Cemetery
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

Shell Rock River Bridge (Cerro Gordo County, Iowa)
Built 1927; replaced 2003
Lost through truss bridge over Shell Rock River on a local road
No longer exists

Sherwood Road Bridge (Cass County, Missouri)
Pony truss bridge over Big Creek on Sherwood Road
Open to traffic

Sheyenne River Bridge (Griggs County, North Dakota)
Built 1912
Through truss bridge over Sheyenne River on a county highway, 1 mi. east and 8 mi. north of Cooperstown in Romness Township
Open to traffic

Shinn Covered Bridge (Washington County, Ohio)
Built 1886 by E.B. Henderson; rehabilitated 1998
Covered bridge over West Branch Wolf Creek on Palmer Road (TR 447)
Unknown status

Shoemaker Covered Bridge (Columbia County, Pennsylvania)
Built 1881
Covered bridge over West Branch Run on Shoemaker Bridge Road (PA 4027)
Open to pedestrians only

Short Mountain Creek Bridge (Logan County, Arkansas)
Built 1928 by the Virginia Bridge & Iron Co.; rehabilitated 1976
Pony truss bridge over Short Mountain Creek on CR 64
Open to traffic

Short Road Bridge (Montgomery County, Missouri)
Built ca. 1910
Through truss bridge over Loutre River on Short Road
Open to traffic

Siam Steel Bridge (Carter County, Tennessee)
Built 1941
One lane, two-span Pratt Truss bridge over Watauga River on Steel Bridge Road (County Road 1011)
One lane bridge, open to traffic

Side Ditch Entrance Bridge (Dubuque County, Iowa)
Built 1900
Pony truss bridge over Side Ditch on an entrance road
Open to traffic

Side Street Bridge (Johnson County, Illinois)
Wooden bridge over the Union Pacific Railroad on E. Side Street in Goreville, just off IL 37
Open to one-lane traffic with a 3 ton weight limit

Silver Bridge (Franklin County, Arkansas)
Built ca. 1929 by the Lakeside Bridge & Steel Co.; rehabilitated 1976; closed to traffic Nov. 2006; Reopened Nov 2007
Three-span through truss bridge over Mulberry River on CR 67 (Wire Road) just north of I-40 in Mulberry
Open to traffic with 3 Ton weight Limit

Silver Creek Bridge (Cedar County, Missouri)
Lost pony truss bridge over Silver Creek on CR 1651
No longer exists

Silver Creek Bridge (Minnehaha County, South Dakota)
Built 1938
Through truss bridge over Silver Creek on 255th Street, 3 mi. north and 1 mi. east of Renner
Unknown status

Silver Creek Bridge (Chase County, Kansas)
Stone arch bridge over Silver Creek, 1.0 mi. north and 0.5 mi. east of Clements
Open to 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

Sim Smith Covered Bridge (Parke County, Indiana)
Built 1883 by J.A. Britton; rehabilitated 1977
Covered bridge over Leatherwood Creek on CR N50W
Open to traffic

Singer Bridge (Miller County, Missouri)
Built ca. 1910
Through truss bridge over Tavern Creek on Singer Bridge Road (CR 52-60) just off MO 52 near St. Elizabeth
Open to one-lane traffic on a gravel road

Singing Bridge (Franklin County, Kentucky)
Built 1893; rehabilitated 1956
Through truss bridge over Kentucky River on US 60 in Frankfort
Open to traffic

Siuslaw River Bridge (Lane County, Oregon)
Built 1936; rehabilitated 1977
Bascule bridge over Siuslaw River on US 101 in Florence
Open to traffic

Skalall Creek Bridge (Tulsa County, Oklahoma)
Built ca. 1910
Pony truss bridge over Skalall Creek on 176th St. N. (E0420) in Skiatook
Open to traffic

Slagle Creek Bridge (Bollinger County, Missouri)
Built ca. 1925 by Miller & Borcherding Bridge Builders of St. Louis, the company that built Hargrove Bridge using the same patented truss design
Pony truss bridge over Slagle Creek on CR 714 near the intersection with CR 720 southwest of Arab
Open to traffic on a gravel road with a 4 ton weight limit

Slough Creek Bridge (Jefferson County, Kansas)
Built 1923
Pony truss bridge over Slough Creek on McCall Drive, 1.9 mi. north of Oskaloosa
Open to traffic

Smart Ditch Bridge (Jackson County, Indiana)
Through truss bridge over Smart Ditch on CR 600 East
Open to traffic

Smith Branch MO 161 Bridge (Montgomery County, Missouri)
Built 1934
Pony truss bridge over Smith Branch on MO 161
Open to traffic

Smith Creek MO 94 Bridge (Warren County, Missouri)
Built 1934
Pony truss bridge over Smith Creek on MO 94
Open to two-lane traffic

Smith Creek Road Bridge (Moniteau County, Missouri)
Built ca. 1930
Pony truss bridge over Smith Creek on Smith Creek Road southwest of California
Open to traffic

Smith Road Bridge (Rock County, Wisconsin)
Built 1910
Single lane Pratt through truss bridge over Turtle Creek on Smith Road
Open to traffic

Smithfield Bridge (Delaware County, Indiana)
Built 1902
Through truss bridge over White River on CR 170 South
Open to 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 (Dickinson County, Kansas)
Built 1915
Through truss bridge over Smoky Hill River on Oat Road, 2.5 mi. east and 0.8 mi. south of Detroit
Closed to all traffic(?)

Sni-A-Bar Creek Bridge (Lafayette County, Missouri)
Built 1929
Through truss bridge over Sni-A-Bar Creek on MO 224 (Old US 24) at Wellington
Open to traffic

Sni-A-Bar Creek Route D Bridge (Lafayette County, Missouri)
Built 1934
Pony truss bridge over Sni-A-Bar Creek on Route D
Open to traffic

Sni-A-Bar Creek Route H Bridge (Jackson County, Missouri)
Built 1929
Pratt through truss bridge over Sni-A-Bar Creek on Route H
Open to traffic

Snow Hill Covered Bridge (Franklin County, Indiana)
Built 1894 by William Butts and John Horn; rehabilitated 1987
Covered bridge over Johnson Fork Whitewater River on Snow Hill Road
Open to traffic

Snyder Covered Bridge (Columbia County, Pennsylvania)
Built 1876
Covered bridge over Roaring Creek on Rarig Road, southeast of Catawissa
Open to traffic

Soledad Canyon Road over UPRR Tracks (Los Angeles County, California)
Built 1938
Rainbow arch bridge over UP Railroad on Soledad Canyon Road
Open to traffic

Sonora Road Bridge (Preble County, Ohio)
Built 1902
Through truss bridge over Twin Creek on TR 455
Open to traffic

South Boat Ditch Bridge (Clark County, Arkansas)
Built ca. 1928
Through truss bridge over South Boat Ditch on CR 8
Open to one-lane traffic

South Boat Ditch US 67 Bridge (Clark County, Arkansas)
Built 1931 by the Virginia Bridge & Iron Co. of Roanoke, Virginia
Pony truss bridge over South Boat Ditch on US 67
Open to two-lane traffic

South Fork 186A Bridge (Christian County, Illinois)
Pony truss bridge over South Fork Sangamon River on TR 186A, 5 mi. southwest of Rosamond
Open to traffic

South Fork Blue River Main Street Bridge (Washington County, Indiana)
Built 1884; rehabilitated 1987 and 2007
Through truss bridge over South Fork Blue River on Main Street in New Pekin
Open to traffic

South Fork Bridge (Christian County, Illinois)
Pony truss bridge over South Fork Sangamon River on TR 343, 8 mi. west of Rosamond
Open to traffic

South Fork Bridge (Christian County, Illinois)
Pony truss bridge over South Fork Sangamon River on TR 307A, 7 mi. east of Morrisonville
Open to traffic

South Fork Creek Bridge (Fayette County, Illinois)
Built ca. 1930; rehabilitated 1950
Pony truss bridge over South Fork Creek on TR 189, 6 mi. north of Brownstown
Open to traffic

South Fork Main City Road Bridge (Cass County, Missouri)
Built ca. 1920
Bedstead Pony truss bridge over South Fork on Main City Road
Closed to all traffic

South Fork TR 343 Bridge No. 2 (Christian County, Illinois)
Pony truss bridge over South Fork Sangamon River on TR 343, 8 mi. west of Rosamond
Open to traffic

South Holston River Bridge (Sullivan County, Tennessee)
Built 1950
Subdivided Warren through truss bridge over South Holston River on U.S. 421 (State Highway 34)
Open to traffic

South Island Bridge (Will County, Illinois)
Pony truss bridge over East Branch Kankakee River on West Street, 0.25 mi. north of Kahler Rd
Open to one-lane traffic

South Moreau Creek Route D Bridge (Cole County, Missouri)
Built 1956
Through truss bridge over South Moreau Creek on Route D
Open to one-lane traffic

South Wea Creek Bridge (Miami County, Kansas)
Built 1915
Concrete arch bridge over South Wea Creek, 3.0 mi. south and 0.6 mi. west of Louisburg
Open to traffic

Sparkman Street Bridge (Morgan County, Alabama)
Built 1915
Concrete arch bridge over Shoal Creek on Sparkman Street in Hartselle
Open to traffic

Sparks Ferry Bridge (Jackson County, Indiana)
Built ca. 1890; closed to traffic 2006
Two-span through truss bridge over East Fork White River on Sparks Ferry Road
Open to pedestrians only

Spillman Creek Bridge (Lincoln County, Kansas)
Built ca. 1910
Pony truss bridge over Spillman Creek, 1.3 mi. north and 2.0 mi. east of Vesper
Open to traffic

Spillman Creek Bridge (Lincoln County, Kansas)
Built 1912
Through truss bridge over Spillman Creek, 3.7 mi. west of Lincoln
Open to traffic

Spoede Road Bridge (St. Louis County, Missouri)
Built 1937
Steel stringer bridge over I-64/US 40 on Spoede Road in Frontenac
Replacement bridge to be built Summer 2008

Spring City Bridge (Rhea County, Tennessee)
Built 1931
Lost through truss bridge over Piney River on US 27/TN 29 in Spring City
No longer exists--replaced by concrete I-beam box girder bridge

Spring Creek 1700N Bridge (Iroquois County, Illinois)
Built 1898
Lost through truss bridge over Spring Creek on 1700N Road
Closed to all traffic after suffering damage in a car accident

Spring Creek Branch 1250N Bridge (Iroquois County, Illinois)
Built 1904
Two-span bedstead pony truss bridge over a branch of Spring Creek on 1250N Road
Open to one-lane traffic

Spring Creek Bridge (Rockingham County, Virginia)
Built 1925 by the Champion Bridge Co.
Pony truss bridge over Spring Creek on Route 748 at Spring Creek
Open to one-lane traffic

Spring Creek Bridge (Atchison County, Kansas)
Built ca. 1930
Pony truss bridge over Spring Creek, 1.0 mi. west and 1.6 mi. north of Arrington
Open to traffic

Spring Hill Road Bridge (Christian County, Missouri)
Built 1914 by the Canton Bridge Co.; demolished 2006
Lost through truss bridge over Finley Creek on Spring Hill Road northeast of Sparta
No longer exists

Spring River CR 1040 Bridge (Lawrence County, Missouri)
Built ca. 1930
Through truss bridge over Spring River on CR 1040
Open to traffic

Spring River CR 2130 Bridge (Lawrence County, Missouri)
Pony truss bridge over Spring River on CR 2130
Open to one-lane traffic

Spring River CR 74 Bridge (Fulton County, Arkansas)
Built 1916 by H.B. Walton
Five-span concrete deck girder bridge over Spring River on CR 74 (Old US 63) in Mammoth Spring
Open to one-lane traffic

Spring River Old US 60 Bridge (Lawrence County, Missouri)
Built 1927
Concrete tee beam bridge over Spring River on Business US 60 near Verona
Open to two-lane traffic

Spring River Route D Bridge (Jasper County, Missouri)
Pony truss bridge over Spring River on Route D southwest of Purcell
Open to two-lane traffic

Spring River Route O Bridge (Jasper County, Missouri)
Built 1935
Through truss bridge over Spring River on Route O
Open to two-lane traffic

Spring Road Bridge (Grundy County, Illinois)
Built 1910
Three-span concrete girder bridge over Mazon River on Spring Road (TR 105), .3 mi. east of Campbell Rd
Open to one-lane traffic

Spring Street Bridge (Whitman County, Washington)
Built 1915
Concrete arch bridge over South Fork Palouse River on Spring Street in Pullman
Open to traffic

Spring Street Bridge (Floyd County, Indiana)
Built ca. 1920
Four-span concrete arch bridge over Silver Creek on Spring Street in Clarksville
Open to traffic

Spring Valley Road Bridge (Miami County, Kansas)
Built ca. 1920
Pony truss bridge over North Wea Creek, 2.2 mi. north and 2.0 mi. west of Louisburg
Open to traffic