Bellshaw Bridge (Grant County, Oregon)
Built 1966; rehabilitated 1982
Through truss bridge over John Day River on CR 44 (Bellshaw Creek Road)
Open to traffic

Bob Cummings Bridge (Perry County, Indiana)
Opened December 21, 1966
Steel through arch bridge over the Ohio River on IN 237 and KY 69 in Cannelton
Open to two-lane traffic

Boeuf River LA 132 Bridge (Richland Parish, Louisiana)
Built 1966
Through truss bridge over Boeuf River on LA 132
Open to traffic

Branch Des Moines River Bridge (Van Buren County, Iowa)
Built 1966; rehabilitated 2000
Pony truss bridge over a branch of Des Moines River on a local road
Open to traffic

Branch South Otter Creek Bridge (Lucas County, Iowa)
Built 1966
Pony truss bridge over a branch of South Otter Creek on a local road
Open to traffic

Branch Whitebreast Creek Bridge (Lucas County, Iowa)
Built 1966
Pony truss bridge over Branch Whitebreast Creek on a local road
Open to traffic

Bridge Avenue Bridge (Freeborn County, Minnesota)
Built 1966 Previous spans: Closed spandrel concrete bridge built in 1912; Riveted Warren pony truss bridge built in 1895 (at span of 64 ft.)- collapsed in 1912; wooden trestle built in 1867
Stringer bridge over Fountain Lake on 107(Bridge Ave)
Open to traffic

Bridge Avenue Bridge (Freeborn County, Minnesota)
Built 1966 Previous spans: Closed spandrel concrete bridge built in 1912; Riveted Warren pony truss bridge built in 1895 (at span of 64 ft.)- collapsed in 1912; wooden trestle built in 1867
Stringer bridge over Fountain Lake on 107(Bridge Ave)
Open to traffic

Burns Road Bridge (Ray County, Missouri)
Built 1966
Arch bridge over an unnamed creek on Burns Road
Open to traffic

Cache Creek Bridge (Comanche County, Oklahoma)
Built 1966
Pony truss bridge over Cache Creek on IRR E1690 in Lawton
Open to traffic

Cape County Road 522 Bridge (Cape Girardeau County, Missouri)
Built 1966
Plank bridge on CR 522 over a branch of Shawnee Creek northeast of Pocahontas
Open to one-lane traffic on a gravel road with an 8 ton weight limit

Chequest Creek Bridge (Van Buren County, Iowa)
Built 1966
Through truss bridge over Chequest Creek on a local road
Open to traffic

Clarks Creek Bridge (Cass County, Iowa)
Built 1966
Pony truss bridge over Clarks Creek on a local road
Open to traffic

Columbia River Bridge (Clatsop County, Oregon)
Built 1966
Through truss bridge over Columbia River on US 101 in Astoria
Open to traffic

Columbia River Bridge (Clatsop County, Oregon)
Built 1966
Through truss bridge over Columbia River on US 101
Open to traffic

Columbia River Bridge (Pacific County, Washington)
Built 1966
Through truss bridge over Columbia River on US 101
Open to traffic

Cottonwood Creek Bridge (Hutchinson County, Texas)
Built 1966
Steel arch bridge over Cottonwood Creek on FM 1526
Open to traffic

Creek Bridge (Grand Forks County, North Dakota)
Built 1966
Pony truss bridge over an unnamed creek on a county highway, 3 mi. north and 4 mi. east of Thompson in Walle Township
Open to traffic

Despain Gulch Road Bridge (Umatilla County, Oregon)
Built 1966
Truss bridge over Despain Gulch on Despain Gulch Road
Open to traffic

Ditch No. 8 Bridge (Cape Girardeau County, Missouri)
Built 1966
Small wooden plank bridge over Ditch No. 8 on CR 260 near the Bollinger County line
Open to one-lane traffic with an 11 ton weight limit

Fox River Bridge (Davis County, Iowa)
Built 1966
Pony truss bridge over Fox River on a local road
Open to traffic

Harry McGee Road Bridge (Massac County, Illinois)
Built 1966
Wooden bridge over Sevenmile Creek on Harry McGee Road
Open to traffic

Highland Avenue Bridge (Jefferson County, Alabama)
Built 1966
Tunnel over US 31 on Highland Avenue in Birmingham
Open to traffic

Hillsboro Inlet Bridge (Broward County, Florida)
Built 1966
Bascule bridge over Hillsboro Inlet on FL A1A in Pompano Beach
Open to traffic

I-80 Tunnel (Sweetwater County, Wyoming)
Built 1966
Pair of tunnels on I-80
Open to traffic

Intracoastal Waterway Bridge (Sarasota County, Florida)
Built 1966
Bascule bridge over Intracoastal Waterway on Business US 41 in South Venice
Open to traffic

Intracoastal Waterway Bridge (Pinellas County, Florida)
Built 1966
Bascule bridge over Intracoastal Waterway on FL 693 (Corey Avenue) in Gulfport
Open to traffic

Intracoastal Waterway Bridge (Sarasota County, Florida)
Built 1966
Bascule bridge over Intracoastal Waterway on Venice Avenue (CR 772) in Venice
Open to traffic

Kedzie Avenue Bridge (Cook County, Illinois)
Built 1966
Through truss bridge over Cal Sag Channel on Kedzie Avenue in Chicago
Open to traffic

Kiamichi River Bridge (Le Flore County, Oklahoma)
Built 1966
Pony truss bridge over Kiamichi River on 4044C
Open to traffic

King Road West Bridge (Lane County, Oregon)
Built 1966; rehabilitated 1992
Covered bridge over Mckenzie River on King Road West
Open to traffic

Little Turkey River Bridge (Chickasaw County, Iowa)
Built 1966
Pony truss bridge over Little Turkey River on a local road
Open to traffic

Marquam Bridge (Clackamas County, Oregon)
Built 1966
Deck truss bridge over Willamette River on I-5 in Portland
Open to traffic

Middle Soldier River Bridge (Crawford County, Iowa)
Built 1966
Pony truss bridge over Middle Soldier River on a local road
Open to traffic

Naches River Bridge (Yakima County, Washington)
Built 1966
Through truss bridge over Naches River on US 12 in Yakima
Open to traffic

Natchez Trace MS 18 Bridge (Claiborne County, Mississippi)
Built 1966
Arch bridge over Natchez Trace Parkway on MS 18
Open to traffic

New Chair of Rocks Westbound (Madison County, Illinois)
Built 1966
Bridge over Mississippi River on I 270 W
Open to traffic

New Madrid County Road 510 Bridge (New Madrid County, Missouri)
Built 1966
Wooden deck bridge over Little River on CR 510 west of Lilbourn
Open to traffic

New Madrid County Road 630 Bridge (New Madrid County, Missouri)
Built 1966; rehabilitated 1995
Wooden deck bridge over Ash Slough Ditch on CR 630 at Route AE
Open to one-lane traffic

North Fork Stillaguamish River Bridge (Snohomish County, Washington)
Built 1966
Steel through arch bridge over North Fork Stillaguamish River on WA 530
Open to traffic

Orleans Bridge (Humboldt County, California)
Built 1966
Suspension bridge over Klamath River on CA 96
Open to traffic

Rio Grande Bridge (Sierra County, New Mexico)
Built 1966
Pony truss bridge over Rio Grande on CR B038
Open to traffic

Rudio Bridge (Grant County, Oregon)
Built 1966
Through truss bridge over North Fork John Day River on CR 1
Open to traffic

South Branch Turtle River Bridge (Grand Forks County, North Dakota)
Built 1966
Pony truss bridge over South Branch Turtle River on a county highway, 1 mi. west and 3 mi. north of Larimore in Elm Grove Township
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

Stutts Creek Bridge (Schoolcraft County, Michigan)
Built 1966
Wooden deck truss bridge over Stutts Creek on CR P448
Open to traffic

Thompson Mill Road Bridge (Barrow County, Georgia)
Built 1966
Pony truss bridge over Little Mulberry River on Thompson Mill Road
Open to traffic

Timber Creek Bridge (Spink County, South Dakota)
Built 1966
Pony truss bridge over Timber Creek on 173rd Street
Open to traffic

Unnamed Creek Bridge (Fayette County, Iowa)
Built 1966
Pony truss bridge over an unnamed creek on a local road
Open to traffic

Unnamed Creek Bridge (Montgomery County, Iowa)
Built 1966
Pony truss bridge over an unnamed creek on a local road
Open to traffic

Unnamed Creek Bridge (Guthrie County, Iowa)
Built 1966
Pony truss bridge over an unnamed creek on a local road
Open to traffic

Walnut Creek Bridge (Montgomery County, Iowa)
Built 1966
Through truss bridge over Walnut Creek on a local road
Open to traffic

Warn Creek Bridge (Fulton County, Arkansas)
Built or relocated here in 1966
Through truss bridge over Warn Creek on AR 289
Open to two-lane traffic

Weldon River Bridge (Decatur County, Iowa)
Built 1966
Through truss bridge over Weldon River on a local road
Open to traffic

West Bow Creek Bridge (Knox County, Nebraska)
Built 1966; rehabilitated 1991
Pony truss bridge over West Bow Creek on a township road, 6.7 mi. east and 5.5 mi. north of Bloomfield
Open to traffic

West Fork Nodaway River Bridge (Adair County, Iowa)
Built 1966
Through truss bridge over West Fork Nodaway River on a local road
Open to traffic

West Nishnabotna River Bridge (Shelby County, Iowa)
Built 1966
Through truss bridge over West Nishnabotna River on a local road
Open to traffic

Western Avenue Bridge (Cook County, Illinois)
Built 1966; rehabilitated 1999
Through truss bridge over Cal Sag Channel on Western Avenue in Chicago
Open to traffic

Wheeling Tunnel (Ohio County, West Virginia)
Built 1966
Pair of tunnels on I-70 in Wheeling
Open to traffic