210th Street Bridge (Bremer County, Iowa)
Built 1921
Pony truss bridge over Buck Creek on 210th Street
Open to traffic

Adams Creek Bridge (Okmulgee County, Oklahoma)
Built 1921
Pony truss bridge over Adams Creek on 5608C
Open to traffic

Anahulu Stream Bridge (Honolulu County, Hawaii)
Built 1921
Rainbow arch bridge over Anahulu Stream on Kamehameha Highway in Haleiwa
Open to traffic

Anderson Hill Road Bridge (Adams County, Ohio)
Built 1921; rehabilitated 1988
Pony truss bridge over Mill Creek on Anderson Hill Road (TR 157)
Open to traffic

Appenzell Creek Bridge (Monroe County, Pennsylvania)
Built 1921
Stone arch bridge over Appenzell Creek on PA 3018
Open to traffic

AR 282 Bridge (Crawford County, Arkansas)
Built 1921
Girder bridge over AR 282 on the Arkansas & Missouri Railroad
Open to traffic

Auxvasse Creek Old US 54 Bridge (Callaway County, Missouri)
Built 1921; rehabilitated 1993
Two-span deck truss bridge over Auxvasse Creek on Old US 54 between Auxvasse and Kingdom City
Open to two-lane traffic

Bakerstown Road Bridge (Allegheny County, Pennsylvania)
Built 1921; rehabilitated 1991
Deck truss bridge over B&LE Railroad on Bakerstown Road in Curtisville
Open to traffic

Barrel Spring Creek Bridge (Montague County, Texas)
Built 1921; rehabilitated 1991
Pony truss bridge over Barrel Spring Creek on Wood Road (CR 300)
Open to traffic

Battle Creek Bridge (Eaton County, Michigan)
Built 1921
Concrete arch bridge over Battle Creek on Business I-69 in Charlotte
Open to traffic

Bayou Boeuf LA 1177 Bridge (Avoyelles Parish, Louisiana)
Built 1921
Pony truss bridge over Bayou Boeuf on LA 1177
Open to traffic

Beach-Garland Bridge (Genesee County, Michigan)
Built 1921 by the Illinois Bridge Co.
Two-span Luten arch bridge over Flint River on Beach and Garland Streets in Flint
Open to traffic

Bear Creek Bridge (Garrett County, Maryland)
Built 1921
Concrete arch bridge over Bear Creek on Accident Bear Creek Road
Open to traffic

Bear River Bridge (Bear Lake County, Idaho)
Built 1921
Through truss bridge over Bear River on a county road west of Georgetown
Open to traffic

Beaver Creek Bridge (Martin County, Indiana)
Built 1921; rehabilitated 1995
Pony truss bridge over Beaver Creek on CR 130 North
Open to traffic

Berry State Aid Bridge (Cherry County, Nebraska)
Built 1920-21 by the Pioneer Construction Co.; rehabilitated 1995
Through truss bridge over Niobrara River on a county road, 9 mi. east of Valentine
Open to traffic

Big Cedar Creek Bridge (Calhoun County, Iowa)
Built 1921
Pony truss bridge over Big Cedar Creek Ditch 181 on a local road
Open to traffic

Big Cove Road Access Bridge (Swain County, North Carolina)
Built 1921
Concrete arch bridge over Raven Fork on Big Cove Road Access
Open to traffic

Big Creek Bridge (Campbell County, Tennessee)
Built 1921
Arch bridge over Big Creek on TN 9 in La Follette
Open to traffic

Big Elm Creek Bridge (Bell County, Texas)
Built 1921
Pony truss bridge over Big Elm Creek on Old TX 81
Open to traffic

Big Moccasin Creek Bridge (Scott County, Virginia)
Built 1921
Pony truss bridge over Big Moccasin Creek on Route 613
Open to traffic

Big Wind River Bridge (Fremont County, Wyoming)
Built 1921
Through truss bridge over Big Wind River on CN10-238
Open to traffic

Black River Bridge (Clark County, Wisconsin)
Replaced 1995
Lost Bridge over Black River on Grand Avenue in Neillsville
Replaced by new bridge

Blue River Bridge (Bryan County, Oklahoma)
Built 1921
Through truss bridge over Blue River on 0748C
Open to traffic

Boulder Creek Bridge (Santa Cruz County, California)
Built 1921
Concrete arch bridge over Boulder Creek on CA 236 in Boulder Creek
Open to traffic

Boulder Creek Bridge (Santa Cruz County, California)
Built 1921
Concrete arch bridge over Boulder Creek on CA 236 in Boulder Creek
Open to traffic

Boyd Run Bridge (Preston County, West Virginia)
Built 1921
Concrete arch bridge over Boyd Run on CR 29/1
Open to traffic

Bradley Fork Bridge (Swain County, North Carolina)
Built 1921
Concrete arch bridge over Bradley Fork on Maintenance Road
Open to traffic

Branch Grasshopper Creek Bridge (Atchison County, Kansas)
Built 1921; replaced 2003
Lost pony truss bridge over a branch of Grasshopper Creek, 5.2 mi. north and 1.5 mi. east of Muscotah
No longer exists

Branch Iowa River Bridge (Wright County, Iowa)
Built 1921
Pony truss bridge over a branch of Iowa River on a local road
Open to traffic

Branch Mill Creek Old US 67 Bridge (Madison County, Missouri)
Built 1921
Concrete slab bridge over a branch of Mill Creek on CR 401 (Old US 67)
Open to traffic

Branch Mud Creek Bridge (Polk County, Iowa)
Built 1921; rehabilitated 1955
Pony truss bridge over Branch Mud Creek on a local road
Open to traffic

Bridge Street Bridge (Clinton County, New York)
Built 1921
Concrete arch bridge over Saranac River on Bridge Street in Plattsburgh
Open to traffic

Bridge Street Bridge (Aroostook County, Maine)
Built 1921; rehabilitated 2001
Through truss bridge over St. John River on Bridge Street in Madawaska
Open to traffic

Brown Road Bridge (Allegheny County, Pennsylvania)
Built 1921
Concrete arch bridge over Pine Creek North Branch on Brown Road
Open to traffic

Browns Creek Bridge (Harrison County, West Virginia)
Built 1921
Concrete arch bridge over Browns Creek on CR 25
Open to traffic

Browns Creek Bridge (Harrison County, West Virginia)
Built 1921
Concrete arch bridge over Browns Creek on CR 25
Open to traffic

Browns Creek Bridge (Pocahontas County, West Virginia)
Built 1921
Concrete arch bridge over Browns Creek on CR 39/3
Open to traffic

Brush Creek Bridge (Westmoreland County, Pennsylvania)
Built 1921
Concrete arch bridge over Brush Creek on PA 4012 in Manor
Open to traffic

Cache Creek Bridge (Yolo County, California)
Built 1921; replaced 2003
Lost concrete arch bridge over Cache Creek on CR 99W
No longer exists

Caddo Creek Bridge (Bryan County, Oklahoma)
Built 1921
Through truss bridge over Caddo Creek on E2080
Open to traffic

Camp Creek Bridge (Calhoun County, Iowa)
Built 1921
Pony truss bridge over Camp Creek on a local road
Open to traffic

Camp Grade Road Bridge (Lafayette County, Florida)
Built 1921; rehabilitated 1989
Pony truss bridge over Steinhatchee River on Camp Grade Road
Open to traffic

Campbell Drive Bridge (Clay County, Missouri)
Built 1921
Arch bridge over Shoal Creek on Campbell Drive in Kansas City
Open to traffic

Capistrano Avenue Bridge (San Luis Obispo County, California)
Built 1921; rehabilitated 1955
Concrete arch bridge over Atascadero Creek on Capistrano Avenue in Atascadero
Open to traffic

Carbon River Bridge (Pierce County, Washington)
Built 1921; rehabilitated 1945
Steel arch bridge over Carbon River on WA 165
Open to traffic

Catawissa Creek Bridge (Schuylkill County, Pennsylvania)
Built 1921
Concrete arch bridge over Catawissa Creek on TR 455 (Foose Lane)
Open to traffic

Cauterskill Road Bridge (Greene County, New York)
Built 1921; rehabilitated 1970
Through truss bridge over Kaaterskill Creek on Cauterskill Road
Open to traffic

Charles River Bridge (Norfolk County, Massachusetts)
Built 1921
Stone arch bridge over Charles River on MA 109 (Bridge Street) in Dedham
Open to traffic

Chattahoochee River Bridge (Muscogee County, Georgia)
Built 1921
Concrete arch bridge over Chattahoochee River on 14th Street in Columbus
Bridge is preserved as part of Columbus, GA and Phenix City, AL's Riverwalk Park

Chickies Creek Bridge (Lancaster County, Pennsylvania)
Built 1921
Concrete arch bridge over Chickies Creek on TR 793 (Chiques Road) in Salunga-Landisville
Open to traffic

Cimarron River Bridge (Kingfisher County, Oklahoma)
Built 1921
Through truss bridge over Cimarron River on N2830
Open to traffic

City Street Bridge (McHenry County, North Dakota)
Built 1921; rehabilitated 1968
Through truss bridge over Mouse River on a city street in Velva
Open to traffic

Clay Lick Creek Bridge (Metcalfe County, Kentucky)
Built 1921
Pony truss bridge over Clay Lick Creek on Glasgow Street in Edmonton
Open to traffic

Clay Street Bridge (Clinton County, Indiana)
Built 1921
Concrete arch bridge over Prairie Creek on Clay Street in Frankfort
Open to traffic

Clear Creek Bridge (Marshall County, Iowa)
Built 1921
Pony truss bridge over Clear Creek on a local road
Open to traffic

Colliery Street Bridge (Schuylkill County, Pennsylvania)
Built 1921
Concrete arch bridge over Mill Creek on Colliery Street in St. Clair
Open to traffic

Coon Creek Bridge (Webster County, West Virginia)
Built 1921
Concrete arch bridge over Coon Creek on WV 20 F in Camden-on-Gauley
Open to traffic

County Line Road Bridge (McHenry County, Illinois)
Built 1921
Concrete bridge over Kishwaukee River on County Line Road
Open to traffic

County Trail Bridge (Walsh County, North Dakota)
Built 1921
Pony truss bridge over an unnamed creek on a county trail, 7 mi. west and 5 mi. south of Grafton
Open to traffic

Creek Bridge (Walsh County, North Dakota)
Built 1921
Pony truss bridge over an unnamed creek on a county highway, 2 mi. north of Grafton in Grafton Township
Open to traffic

Crellin Underwood Bridge (Garrett County, Maryland)
Built 1921
Concrete arch bridge over Snowy Creek on Crellin Underwood
Open to traffic

Dead River Bridge (Marquette County, Michigan)
Built 1921
Through truss bridge over Dead River on CR 510
Open to traffic

Deer Creek Bridge (Tehama County, California)
Built 1921; rehabilitated 1953; replaced 2002
Lost concrete arch bridge over Deer Creek on CA 99
No longer exists

Drainage Ditch No. 175 Bridge (Palo Alto County, Iowa)
Built 1921
Pony truss bridge over Drainage Ditch No. 175 on a local road
Open to traffic

Dry Canyon Creek Bridge (Wasco County, Oregon)
Built 1921
Concrete arch bridge over Dry Canyon Creek on HWY 100
Open to traffic

Dry Creek Bridge (Walla Walla County, Washington)
Built 1921
Concrete arch bridge over Dry Creek on WA 125
Open to traffic

Eagle Chief Creek Bridge (Woods County, Oklahoma)
Built 1921
Pony truss bridge over Eagle Chief Creek on E0220
Closed to all traffic

East Broadway Street Bridge (Jackson County, Ohio)
Built 1921; rehabilitated 1986
Two-span arch bridge over Salt Lick Creek on East Broadway Street in Jackson
Open to traffic

East Fork Little Muddy Creek Bridge (Williams County, North Dakota)
Built 1921
Pony truss bridge over East Fork Little Muddy Creek on a county highway
Open to traffic

Elk Creek Bridge (Harrison County, West Virginia)
Built 1921
Concrete arch bridge over Elk Creek on Southbound WV 20 in Clarksburg
Open to traffic

Elk Creek Bridge (Decatur County, Iowa)
Built 1921; rehabilitated 1967
Pony truss bridge over Elk Creek on a local road
Open to traffic

Elkhorn Creek Bridge (McDowell County, West Virginia)
Built 1921
Concrete arch bridge over Elkhorn Creek on CR 17 in Northfork
Open to traffic

Elkins Bridge (Washington County, Arkansas)
Built 1921 by the Luten Bridge Co.
Three-span concrete arch bridge over White River on CR 44 (Mt. Olive Road) in Elkins
Open to one-lane traffic

Ellington Bridge (Reynolds County, Missouri)
Built 1921; replaced when the new alignment of MO 21 was built in 1967
Lost five-span pony truss bridge over Logan Creek on MO 21 at Ellington
Replaced by a new bridge

Elm Street Bridge (Cheshire County, New Hampshire)
Built 1921; rehabilitated 1995
Pony truss bridge over Ashuelot River on Elm Street in Winchester
Open to traffic

Emerson Street Bridge (McLean County, Illinois)
Built 1921; rehabilitated 1980
Lost pony truss bridge over the Union Pacific Railroad on Emerson Street in Bloomington
Replaced by a new bridge

Entiat River Bridge (Chelan County, Washington)
Built 1921
Concrete arch bridge over Entiat River on CR 47670
Open to traffic

Entrance Road Bridge (Washington County, Pennsylvania)
Built 1921
Concrete arch bridge over Chartiers Creek on Entrance Road in Canonsburg
Open to traffic

Farrington Road Bridge (Miami County, Ohio)
Built 1921
Stone arch bridge over Drake Ditch on Farrington Road (CR 31)
Open to traffic

Feather River Bridge (Butte County, California)
Built 1921; rehabilitated 1962; replaced 2000
Lost through truss bridge over Feather River on CA 162 in Oroville
No longer exists

Finger Lakes Bridge (Onondaga County, New York)
Built 1921
Concrete arch bridge over NY 174 on Finger Lakes
Open to traffic

Fish Creek Bridge (Hughes County, Oklahoma)
Built 1921
Pony truss bridge over Fish Creek on E1200
Open to traffic

Five Point Creek Bridge (Union County, Oregon)
Built 1921
Through truss bridge over Five Point Creek on I-84 Frontage Road
Open to traffic

Florence Main Street Bridge (Fremont County, Colorado)
Built 1921
Concrete arch bridge over Coal Creek on CO 115 in Florence
Open to traffic

Foothill Blvd over Big Tujunga Wash (Los Angeles County, California)
Built 1921; rehabilitated 1937
Concrete tee beam bridge over N Chan Big Tujunga Wash on Foothill Blvd in Los Angeles
Open to traffic

Fourth Street Bridge (Allen County, Indiana)
Built 1921
Concrete arch bridge over Spy Run Creek on Fourth Street in Fort Wayne
Open to traffic

Fox Farm Road Bridge (Lincoln County, Wyoming)
Built 1921
Pony truss bridge over Ham's Fork River on Fox Farm Road
Open to traffic

Foxburg Bridge (Armstrong County, Pennsylvania)
Built 1921; rehabilitated 1981/1985; demolished July 24, 2008
Lost through truss bridge over Allegheny River on PA 58 in Foxburg
Replaced by a new bridge

Freeman Springs Road Bridge (Whitfield County, Georgia)
Built 1921
Concrete arch bridge over East Chickamauga Creek on Freeman Springs Road
Open to traffic

French River Bridge (St. Louis County, Minnesota)
Built 1921
Concrete arch bridge over French River on CR 61
Open to traffic

Frost Creek Bridge (Limestone County, Texas)
Built 1921
Pony truss bridge over Frost Creek on CR 786 in Groesbeck
Open to traffic

Gilroy Hot Springs Road Bridge (Santa Clara County, California)
Built 1921; rehabilitated 1993
Through truss bridge over Coyote Creek on Gilroy Hot Spgs Road
Open to traffic

Glen Echo Ravine Bridge (Franklin County, Ohio)
Built 1921
Concrete arch bridge over Glen Echo Ravine on OH 23 in Columbus
Open to traffic

Glenmere Lake Bridge (Essex County, Massachusetts)
Built 1921
Wooden bridge over Glenmere Lake on MA 107 (Western Avenue) in Lynn
Open to traffic

Grand River Bridge (Ingham County, Michigan)
Built 1921; replaced 2003
Lost concrete arch bridge over Grand River on Elm Avenue
No longer exists

Harrison Avenue Bridge (Lackawanna County, Pennsylvania)
Built 1921-22
Open-spandrel arch bridge over Roaring River on PA 6011 (Harrison Avenue) in Scranton
Open to traffic

Healdsburg Avenue Bridge (Sonoma County, California)
Built 1921
Through truss bridge over Russian River on Healdsburg Avenue in Healdsburg
Open to traffic

Heins Road Bridge (Linn County, Iowa)
Built 1921
Pony truss bridge over East Blue Creek on Heins Road
Open to traffic

High Falls Road Bridge (Greene County, New York)
Built 1921
Concrete arch bridge over Kaaterskill Creek on High Falls Road
Open to traffic