Red River LA 2 Bridge (Bossier Parish, Louisiana)
Built 1955; rehabilitated 1992
Five-span through truss bridge over Red River on LA 2
Open to traffic

Red River US 71 Bridge (Rapides Parish, Louisiana)
Built 1936
Through truss bridge over Red River on US 71 at Fort Buhlow
Open to traffic

Red River US 82 Bridge (Miller County, Arkansas)
Built 1931; replaced 1990
Lost through truss over Red River on US 82 at Garland City in Garland
Replaced by a new bridge

Redings Mill Bridge (Newton County, Missouri)
Built 1930 by contractor M.E. Gillioz
Closed three-span open-spandrel arch bridge over Shoal Creek on MO 86 south of Joplin in Joplin
Bypassed by new bridge; open to pedestrians only

Reid Creek Bridge (Iron County, Missouri)
Built 1925
Bridge over Reid Creek on Mo Route 21
Open to traffic

Republican River Bridge (Webster County, Nebraska)
Built 1935
Truss bridge over Republican River on US 281, 2 mi. south of Red Cloud
Open to traffic

Republican River US 24 Bridge (Clay County, Kansas)
Built 1928; rehabilitated 1983; replaced 2005
Lost(?) cantilevered through truss bridge over Republican River on US 24
No longer exists

Rex T. Barber Bridge (Jefferson County, Oregon)
Built 2000
Concrete arch bridge over Crooked River on US 97
Open to traffic

Rich Fountain Bridge (Osage County, Missouri)
Two-span stone arch bridge over Brush Creek on Route E in Rich Fountain
Open to two-lane traffic

Richland Creek Bridge (Morgan County, Missouri)
Built 1957
Pony truss bridge over Richland Creek on Route JJ, southwest of Syracuse
Open to one-lane traffic

River Aux Vases Route B Bridge (Ste. Genevieve County, Missouri)
Built 1936
Through truss bridge over River Aux Vases on Route B southwest of Ste. Genevieve
Open to one-lane traffic

River Aux Vases US 61 Bridge (Ste. Genevieve County, Missouri)
Built 1925; replaced July 2004
Lost through truss bridge over River Aux Vases between Ste. Genevieve and St. Mary
Replaced by a new bridge

Riverside Bridge (St. Clair County, Alabama)
Built 1930; rehabilitated 1972
Through truss swing bridge over Coosa River (Logan Martin Lake) on US 78 at Riverside
Open to traffic

Roadside Ditch Bridge No. 1 (Lawrence County, Missouri)
Built ca. 1930
Wooden bridge over a roadside ditch on CR 1208, just off MO 174
Open to one-lane traffic

Roadside Ditch Bridge No. 2 (Lawrence County, Missouri)
Built 1948
Wooden bridge over a branch of Turnback Creek on a private lane just off MO 174
Open to one-lane traffic

Roasting Ear Creek Bridge (Stone County, Arkansas)
Built 1936 by the Civilian Conservation Corps
Small three-span stone arch bridge over Roasting Ear Creek on AR 263
Open to two-lane traffic

Rocheport I-70 Bridge (Boone County, Missouri)
Built 1960; rehabilitated 1993
Cantilevered through truss bridge over Missouri River and Katy trail on I-70 west of Columbia and south of Rocheport
Open to four lanes of traffic

Rock Valley US 18 Bridge (Sioux County, Iowa)
Built 2002
Stringer bridge over Rock River on US 18
Open to traffic

Rockport Bridge (Hot Spring County, Arkansas)
Built 1900 by Stupp Brothers Bridge & Iron Co.; destroyed by flooding in 1990
Lost three-span through truss bridge over Ouachita River on AR 84 in Malvern
Destroyed by flooding

Rocky Creek Bridge (Lincoln County, Oregon)
Built 1927; rehabilitated 2001
Concrete arch bridge over Rocky Creek on US 101 Frontage Road
Open to traffic

Rocky Point Bridge (Jackson County, Oregon)
Built 1919
Concrete arch bridge over Rogue River on OR 99
Open to traffic

Rolling Fork KY 289 Bridge (Marion County, Kentucky)
Built 1923; rehabilitated 1972
Through truss bridge over Rolling Fork on KY 289
Open to traffic

Rollins Ferry Bridge (Osage County, Missouri)
Most likely replaced by a state highway bridge in the 1930's when MO 89 was constructed. The current bridge here was built 1964.
Lost three-span through truss over Gasconade River where MO 89 now crosses, east of Rich Fountain
No longer exists

Root River MN 250 Bridge (Fillmore County, Minnesota)
Originally built 1931 in Rochester; relocated here in 1960 to replace a similar bridge that had collapsed
Through truss bridge over Root River on MN 250 north of Lanesboro
Open to traffic

Ross Island Bridge (Multnomah County, Oregon)
Built 1926
Steel arch bridge over Willamette River on US 26 in Portland
Open to traffic

Roubidoux Bridge (Pulaski County, Missouri)
Built 1923; rehabilitated 1939
Five-span concrete arch bridge over Roubidoux Creek on MO 17 in Waynesville
Open to two-lane traffic

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

Route O Bridge (Mississippi County, Missouri)
Built 1936
Stringer bridge over a drainage ditch on Route O
Open to one-lane traffic

Ruby Street Bridge (Will County, Illinois)
Built 1935; rehabilitated 1972
Bascule bridge over Des Plaines River on IL 53 (Old US 66) in Joliet
Open to four-lane traffic

Rulo Bridge (Richardson County, Nebraska)
Built 1938
Through truss bridge over Missouri River on US 159 at Rulo
Open to traffic

Sabula Bridge (Iron County, Missouri)
Built 1922; rehabilitated 1945
Two-span open-spandrel arch bridge over Big Creek on MO 49 north of Sabula
Open to traffic

Sacramento River Bridge (Shasta County, California)
Built 1941; rehabilitated 1967
Deck truss bridge over Sacramento River on I-5 in Lakehead-Lakeshore
Open to traffic

Sacramento River Bridge (Siskiyou County, California)
Built 1955; rehabilitated 1983
Concrete arch bridge over Sacramento River on I-5 in Dunsmuir
Open to traffic

Salado Creek US 167 Bridge (Independence County, Arkansas)
Lost two-span stone arch bridge over Salado Creek on US 167
No longer exists

Saline Creek MO 17 Bridge (Miller County, Missouri)
Built 1925
Through truss bridge over Saline Creek on MO 17, northeast of Tuscumbia
Open to two-lane traffic

Saline Creek MO 72 Bridge (Madison County, Missouri)
Built 1923; rehabilitated 1975
Pony truss bridge over Saline Creek on MO 72 east of Fredericktown
Open to traffic

Saline Creek US 61 Bridge (Ste. Genevieve County, Missouri)
Built 1925; replaced Aug. 2004
Lost through truss bridge over Saline Creek on US 61 north of St. Mary
Replaced by a new bridge

Saline River AR 229 Bridge (Saline County, Arkansas)
Built 1928; replaced 1999
Lost two-span open-spandrel arch bridge over Saline River on AR 229 (Old US 67/70) just west of Benton in Benton
Replaced by a new bridge

Saline River AR 24 Bridge (Sevier County, Arkansas)
Built 1929 by contractor Reynolds & Sutton; replaced 1991
Lost through truss over Saline River on AR 24 (later renamed US 371)
Replaced by a new bridge

Saline River US 183 Bridge (Ellis County, Kansas)
Built 1933; rehabilitated 1963
Seven-span open-spandrel arch bridge over Saline River on US 183, 13.85 mi. north of I-70
Open to traffic

Saline River US 278 Bridge (Bradley County, Arkansas)
Built 1949; replaced 2002
Lost pony and deck truss bridge over Saline River on US 278 (formerly AR 4) east of Warren
No longer exists

Saline River US 63 Bridge (Bradley County, Arkansas)
Built 1929 by the Lakeside Bridge & Steel Company; replaced 1991
Lost two-span through truss bridge over Saline River on US 63 (formerly AR 15)
Replaced by a prestressed concrete bridge

Saline River US 70 Bridge (Sevier County, Arkansas)
Lost two-span pony truss bridge over Saline River on US 70 west of Dierks
Replaced by a new bridge in 1950

Saline River US 79 Bridge (Cleveland County, Arkansas)
Replaced 1956
Lost through truss bridge over Saline River on AR 3 (later US 79) south of Rison
Replaced by a new bridge

Salladasburg Bridge (Lycoming County, Pennsylvania)
Built 1941; rehabilitated 1993
Through truss bridge over Larrys Creek on PA 287 in Salladasburg
Open to two-lane 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 Katy Trail Bridge (Howard County, Missouri)
Wooden trestle over Salt Creek on the Katy Trail next to US 40
Open to pedestrians

Salt Creek US 30 Bridge (Porter County, Indiana)
Built 1938
Concrete arch bridge over Salt Creek on US 30
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

Salt River KY 55 Bridge (Spencer County, Kentucky)
Built 1932
Through truss bridge over Salt River on KY 55 in Taylorsville
Open to traffic

San Gabriel Canyon Road over the San Gabriel River (Los Angeles County, California)
Built 1933
Deck truss bridge over San Gabriel River on CA 39 in Azusa
Open to traffic

San Pedro Terminal Island Bridge (Los Angeles County, California)
Built 1963; rehabilitated 1990
Suspension bridge over San Pedro Terminal Island on CA 47 in Los Angeles
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

Sandy Creek MO 79 Bridge (Lincoln County, Missouri)
Built 1938
Through truss bridge over Sandy Creek on MO 79 near Foley
Open to traffic

Santa Fe Avenue Bridge (Pueblo County, Colorado)
Built 1924 by the Pueblo Bridge Co.
Through truss bridge over the Arkansas River on eastbound US 50 (Santa Fe Avenue) in Pueblo
Open to two lanes of traffic

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

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

Second Street Bridge (Bartholomew County, Indiana)
Built 1999
Cable-stayed bridge over East Fork White River on IN 46
Open to traffic

Sedgewickville Bridge (Bollinger County, Missouri)
Built 1936
Three-span pony plate-girder bridge over Whitewater River on Route K north of Sedgewickville
Open to two-lane traffic

Selah Creek Bridge (Yakima County, Washington)
Built 1969
Concrete arch bridge over Selah Creek on I-82
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

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

Severn Creek KY 355 Bridge (Owen County, Kentucky)
Built 1942
Through truss bridge over Severn Creek on KY 355
Open to traffic

Shasta River Bridge (Siskiyou County, California)
Built 1931
Concrete arch bridge over Shasta River on CA 263
Open to traffic

Shasta River Bridge (Siskiyou County, California)
Built 1928
Concrete tee beam bridge over Shasta River on State Route 263
Open to traffic

Shepperds Dell Bridge (Multnomah County, Oregon)
Built 1914
Concrete arch bridge over Shepperds Dell on Historical Columbia River Highway
Open to traffic

Sherman Minton Bridge (Jefferson County, Kentucky)
Built 1961; rehabilitated 1997
Two-span steel through arch bridge over Ohio River on I-64 between New Albany and Louisville in Louisville
Open to traffic

Shippingsport Bridge (La Salle County, Illinois)
Lost 7 span through truss vertical lift bridge, replaced with a modern span.
Lost through truss bridge over Illinois River on once carried US 51 and later IL 351
Replaced by new bridge

Shirley AR 9 Bridge (Van Buren County, Arkansas)
Lost through truss bridge over Middle Fork Little Red River on AR 9 at Shirley
Replaced by a new bridge in 1960

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

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

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

Sinking Creek KY 144 Bridge (Breckinridge County, Kentucky)
Built ca. 1950
Through truss bridge over Sinking Creek on KY 144
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

Smackover Creek AR 7 Bridge (Union County, Arkansas)
Replaced 1990
Lost pony truss bridge over Smackover Creek on AR 7 (northbound)
Replaced by a new bridge

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

Smiths Creek Bridge (Franklin County, Arkansas)
Built 1928 by the Virginia Bridge & Iron Co.; replaced and relocated to a nearby field
Pony truss bridge formerly over Smiths Creek on AR 309
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

Soden Grove Bridge (Lyon County, Kansas)
Built 1923; made obsolete by new bridge in 1987
Marsh arch bridge over Cottonwood River at Emporia
Open to pedestrians only

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

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 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 Bridge (Garland County, Arkansas)
Built 1928 by a county work crew for $3,500. Made obsolete by a new bridge in 1985 and closed to traffic.
Two-span concrete arch bridge over South Fork Saline River, next to AR 128
Open to pedestrians only

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 Root River Bridge (Fillmore County, Minnesota)
Built 1931
Pony truss bridge over South Fork Root River on MN 43
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 Fork US 65 Bridge (Van Buren County, Arkansas)
Built 1931 by M.K. Orr of Little Rock; rehabilitated 1962
Three-span cantilevered deck truss bridge over South Fork Little Red River on US 65 in Clinton
Open to traffic

South Harpeth River TN 100 Bridge (Davidson County, Tennessee)
Built 1929
Through truss bridge over South Harpeth River on TN 100 in Nashville
Open to traffic

South Holston River Bridge (Sullivan County, Tennessee)
Built ca. 1930
Three-span arch bridge over South Holston River on State Highway 36 in Kingsport
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 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 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 Grand Avenue Bridge (Clay County, Iowa)
Built 1915; rehabilitated 1951
Lost concrete arch bridge over Little Sioux River on US 18/71 (Grand Avenue) in Spencer
Replaced by a new bridge

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