Santa Clara River Bridge (Washington County, Utah)
Built 1957
Steel arch bridge over Santa Clara River on UT 18
Open to traffic

Sarratt Creek Bridge (Cherokee County, South Carolina)
Built 1958
Steel arch bridge over Sarratt Creek on SC 150
Open to traffic

Saugatuck River Bridge (Fairfield County, Connecticut)
Built 1938; rehabilitated 1990
Steel arch bridge over Saugatuck River on CT 15 in Westport
Open to traffic

Schaefer Brook Bridge (Warren County, New York)
Built 1940
Steel arch bridge over Schaefer Brook on CR 16 (E. River Drive) in Lake Luzerne-Hadley
Open to traffic

Schenley Drive Bridge (Allegheny County, Pennsylvania)
Built 1896; rehabilitated 1994
Steel arch bridge over CSX Railroad and Boundary Street on Schenley Drive in Pittsburgh
Open to traffic

SE 137th Avenue Bridge (Marion County, Florida)
Built 1940
Steel arch bridge over Creek on SE 137th Avenue
Open to traffic

Sebastian Canal Bridge (Brevard County, Florida)
Built 1938
Steel arch bridge over Sebastian Canal on Micco Road in Micco
Open to traffic

Second Avenue Bridge (Davidson County, Tennessee)
Built 1968
Steel arch bridge over Second Avenue (TN 1) on I-40 in Nashville
Open to traffic

Secor Road Bridge (Monroe County, Michigan)
Built 1948
Steel arch bridge over Lockwood Drain on Secor Road
Open to traffic

Shannon-Wenonah Road Bridge (Jefferson County, Alabama)
Built 1935
Steel arch bridge over Little Shades Creek on Shannon-Wenonah Road in Birmingham
Open to traffic

Shawnee Road Bridge (Wyandotte County, Kansas)
Built 1933; rehabilitated 1976 and 2005
Steel arch bridge over 7th Street Trafficway on Shawnee Road in Kansas City
Open to traffic

Silver Mills Road Bridge (Penobscot County, Maine)
Built 1935
Steel arch bridge over Sebasticook River on Silver Mills Road in Dexter
Open to traffic

Silver Spring Creek Bridge (Wabasha County, Minnesota)
Built 1947
Steel arch bridge over Silver Spring Creek on CR 6
Open to traffic

Six Mile Creek Bridge (Lancaster County, South Carolina)
Built 1937
Steel arch bridge over Six Mile Creek on C-29-92
Open to traffic

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

Skellinger Road Bridge (Sussex County, New Jersey)
Built 1942; rehabilitated 1970
Steel arch bridge over Big Flat Brook on Skellinger Road
Open to traffic

Slade Creek Bridge (Saratoga County, New York)
Built 1957; rehabilitated 1965
Steel arch bridge over Slade Creek on NY 29 in Saratoga Springs
Open to traffic

Snake River Bridge (Teton County, Wyoming)
Built 1950
Steel arch bridge over Snake River on US 26 in Hoback
Open to traffic

Snyder Park Road Bridge (Clark County, Ohio)
Built 1897; rehabilitated 1995
Steel arch bridge over Buck Creek on Snyder Park Road N. in Springfield
Open to traffic

Soldiers Road Bridge (Hennepin County, Minnesota)
Built 1908
Steel arch bridge over Minnehaha Creek on Soldiers Road in Minneapolis
Open to pedestrians only

South Branch Of Wildcat Creek Bridge (Lancaster County, South Carolina)
Built 1939
Steel arch bridge over South Branch of Wildcat Creek on S-29-39
Open to traffic

South Fork Willis Creek Bridge (Brown County, Texas)
Built 1950
Steel arch bridge over South Fork of Willis Creek on SF Austin Drive in Brownwood
Open to traffic

South Fork Willis Creek Bridge (Brown County, Texas)
Built 1950; rehabilitated 1982
Steel arch bridge over South Fork of Willis Creek on Milam Drive in Brownwood
Open to traffic

South Platte River I-25 Bridge (Denver County, Colorado)
Built 1951; rehabilitated 1970
Steel deck arch bridge over South Platte River on I-25 in Denver
Open to traffic

South Street Bridge (New Haven County, Connecticut)
Built 1964
Steel arch bridge over I-84 on South Street in Middlebury
Open to traffic

Split Rock Creek Bridge (Minnehaha County, South Dakota)
Built 1966
Steel arch bridge over Split Rock Creek on 5th Street in Garretson
Open to traffic

Spring Creek Bridge (Ashtabula County, Ohio)
Built 1942
Steel arch bridge over Spring Creek
Open to traffic

Spring Draw Bridge (Randall County, Texas)
Built 1989
Steel arch bridge over Spring Draw on FM 2590
Open to traffic

Standish Road Bridge (Clinton County, New York)
Built 1937
Steel arch bridge over Separator Brook on Standish Road in Lyon Mountain
Open to traffic

Stony Creek Bridge (Oneida County, New York)
Built 1937; rehabilitated 1990
Steel arch bridge over Stony Creek on NY 31
Open to traffic

Stony Creek Bridge (Bath County, Virginia)
Built 1932
Steel arch bridge over Stony Creek on Route 629
Open to traffic

Strawberry Mansion Bridge (Philadelphia County, Pennsylvania)
Built 1897; rehabilitated 1998
Steel arch bridge over Schuylkill River on Strawberry Mansion in Philadelphia
Open to traffic

Sturgeon River Bridge (Baraga County, Michigan)
Built 1947; rehabilitated 1998
Steel arch bridge over Sturgeon River on US 41
Open to traffic

Sugar Run Bridge (Union County, Ohio)
Built 1939
Steel arch bridge over Sugar Run on TR 23
Open to traffic

Sunkauissia Creek Bridge (Rensselaer County, New York)
Built 1938
Steel arch bridge over Sunkauissia Creek on CR 109
Open to traffic

Sunrise Road Bridge (Pierce County, Washington)
Built 1931
Steel arch bridge over Fryingpan Creek on Sunrise Road
Open to traffic

Tavernor Road Bridge (Sacramento County, California)
Built 1981
Steel arch bridge over Pasture Creek on Tavernor Road in Wilton
Open to traffic

Thurston Avenue Bridge (Tompkins County, New York)
Built 1960
Steel arch bridge over Fall Creek on Thurston Avenue in Ithaca
Open to traffic

Tobey Hill Road Bridge (Litchfield County, Connecticut)
Built 1956
Steel arch bridge over Whiting River on Tobey Hill Road in North Canaan
Open to traffic

Tully Road Bridge (Franklin County, Massachusetts)
Built 1940
Steel arch bridge over West Branch Tully River on Tully Road in Orange
Open to traffic

Turtle Creek Bridge (Todd County, Minnesota)
Built 1940
Steel arch bridge over Turtle Creek on CR 411
Open to traffic

Turtle Creek Bridge (Todd County, Minnesota)
Built 1935
Steel arch bridge over Turtle Creek on CR 357
Open to traffic

Tygart River Bridge (Marion County, West Virginia)
Southbound bridge built 1960; northbound bridge built 1966
Pair of steel arch bridges over Tygart River on I-79 in Pleasant Valley
Open to traffic

Virgin River Bridge (Washington County, Utah)
Built 1937; rehabilitated 2003
Steel arch bridge over Virgin River on UT 9 in Hurricane
Open to traffic

Walden Lane Bridge (Lake County, Illinois)
Built 1914; rehabilitated 1995
Steel arch bridge over a ravine on Walden Lane in Lake Forest
Open to traffic

Walden Lane Bridge No. 2 (Lake County, Illinois)
Built 1914; rehabilitated 1995
Steel arch bridge over a ravine on Walden Lane in Lake Forest
Open to traffic

Warrior-Trafford Road Bridge (Jefferson County, Alabama)
Built 1940
Steel arch bridge over Hoagland Creek on Warrior-Trafford Road in Warrior
Open to traffic

Washington Bridge (New York County, New York)
Built 1888; rehabilitated 1992
Two-span steel arch bridge over Harlem River on 181st Street in New York
Open to traffic

Washington Crossing Bridge (Allegheny County, Pennsylvania)
Built 1923-24
Three-span steel arch bridge over Allegheny River on Fortieth Street (Route 2124) in Pittsburgh
Open to traffic

Washington Street Bridge (Walworth County, Wisconsin)
Built 1930
Steel arch bridge over Swan Creek on Washington Street in Delavan
Open to traffic

Welch Road Bridge (St. Lawrence County, New York)
Built 1917
Steel arch bridge over White Creek on Welch Road
Open to traffic

West Branch Milwaukee River Bridge (Fond du Lac County, Wisconsin)
Built 1940
Steel arch bridge over West Branch Milwaukee River on Main Street
Open to traffic

West Fork Humptulips River Bridge (Grays Harbor County, Washington)
Built 1951
Steel arch bridge over West Fork Humptulips River
Open to traffic

Wilson Canyon Bridge (Coconino County, Arizona)
Built 1938
Steel arch bridge over Wilson Canyon on AZ A89
Open to traffic

Wilson Creek Bridge (Bath County, Virginia)
Built 1932
Steel arch bridge over Wilson Creek on Route 629
Open to traffic

Wilson Creek Bridge (Matagorda County, Texas)
Built 1960
Steel arch bridge over Wilson Creek on 4th Street in Waco
Open to traffic

Wilson Creek Bridge (Bath County, Virginia)
Built 1932
Steel arch bridge over Wilson Creek on Route 629
Open to traffic

Wilson Creek Bridge (Bath County, Virginia)
Built 1932
Steel arch bridge over Wilson Creek on Route 629
Open to traffic