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

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

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

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

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

Dry Canyon Creek Bridge (Wasco County, Oregon)
Built 1921
Concrete arch bridge over Dry Canyon Creek on Historical Columbia River Highway
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

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

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

High Level Bridge (Marion County, West Virginia)
Built 1921; rehabilitated 2000
Concrete arch bridge over Monongahela River on Jefferson Street (CR 19/73) in Fairmont
Open to traffic

Kansas Avenue Bridge (Wyandotte County, Kansas)
Built 1921; rehabilitated 1978 and 2007
Deck truss bridge over Kansas River on Kansas Avenue in Kansas City
Open to four-lane traffic

Liberty Street Bridge (Clay County, Missouri)
Built 1921
Arch bridge over Wilkerson Creek on Liberty Street near Smithville
Open to traffic

Lincoln Highway Bridge (Chester County, Pennsylvania)
Built 1921
Concrete arch bridge over East Branch Brandywine Creek on Lincoln Highway in Downingtown
Open to traffic

Main Street Bridge (Allen County, Indiana)
Built 1921; rehabilitated 1997
Three-span arch bridge over St. Marys River on Main Street in Fort Wayne
Open to traffic

Mill Creek Bridge (Reynolds County, Missouri)
Built 1921; abandoned ca. 2002; razed 2004-05
Lost concrete slab bridge on CR 360 (Old MO 21) over Mill Creek east of Lesterville
No longer exists

Mississippi County Road 307 Bridge (Mississippi County, Missouri)
Built 1921
Pony truss on CR 307 (Old US 60) near Birds Point over a drainage ditch emptying into Brewer Lake in Wyatt
Open to traffic on a paved road with a 20 ton weight limit

Mott Bridge (Hettinger County, North Dakota)
Built 1921; replaced 1982
Lost two-span rainbow arch bridge over North Fork Cannonball River on First Street in Mott
Replaced by new bridge

North Avenue Viaduct (Milwaukee County, Wisconsin)
Built 1921; Replaced 1991
Lost Open-spandrel arch bridge over Milwaukee River on E North Avenue in Milwaukee
Replaced by new bridge

North Yamhill River Bridge (Yamhill County, Oregon)
Built 1921
Deck truss bridge over North Yamhill River on Southbound OR 99W
Open to traffic

Paoli Pike Bridge (Floyd County, Indiana)
Built 1921
Two-span concrete arch bridge over Little Indian Creek on Paoli Pike
Open to traffic

Pea River Bridge (Dale County, Alabama)
Opened Aug. 3, 1921
Concrete arch bridge over Pea River on US 231
Open to pedestrians only

POC over Fern Dell Creek (Los Angeles County, California)
Built 1921; rehabilitated 1927
Wooden POC
Open to Pedistrians

Republican River Bridge (Republic County, Kansas)
Built 1921
Through truss bridge over Republican River, 1.0 mi. south and 1.0 mi. west of Republic
Open to traffic

Rock Creek Bridge (Skamania County, Washington)
Built 1921
Concrete tee beam bridge over Rock Creek on Rock Creek Drive in Stevenson
Open to traffic

Rock Creek Bridge (Creek County, Oklahoma)
Built 1921
Through truss bridge over Rock Creek on Ozark Trail (Old Rt. 66) in Sapulpa
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 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

Thompson River 3rd Street Bridge (Grundy County, Missouri)
Built 1921
Two-span through truss bridge over Thompson River on 3rd Street (Old MO 6) west of Trenton
Open to traffic

West Beaver Creek Lincoln Highway Bridge (Greene County, Iowa)
Built 1921
Concrete bridge over West Beaver Creek on a local road
Open to traffic

Whittier Boulevard over the Rio Hondo in Montebello (Los Angeles County, California)
Built 1921; rehabilitated 1927
Deck truss bridge over Rio Hondo on Whittier Boulevard (CA 72) in Montebello
Open to traffic

Wilby Creek Bridge (Butler County, Missouri)
Built 1921
Concrete slab bridge over Wilby Creek on Route O (formerly US 67)
Open to traffic