Structurally deficient

Old Five Road Bridge (Morgan County, Missouri)
Built 1922
Pony truss on Old Five Road over a branch of Little Gravois Creek
Open to traffic

Old Kankakee River Bridge (Starke County, Indiana)
Built ca. 1910
Through truss bridge over Old Kankakee River on CR 1100 West
Closed to all traffic

Old Mines Bridge (Washington County, Missouri)
Built 1923; rehabilitated 1933; replaced Summer 2007
Lost pony truss bridge over Old Mines Creek on MO 21
Replaced by a new bridge

Old Monroe Bridge (Lincoln County, Missouri)
Built 1930
Three-span through truss bridge over Cuivre River on Main Street (Old MO 79) in Old Monroe
Open to one-lane traffic

Old National Road Bridge (Vigo County, Indiana)
Built 1919
Concrete arch bridge over Clear Creek on Old National Road
Open to traffic

Old Red Covered Bridge (Gibson County, Indiana)
Built 1875 by William T. Washer
Covered bridge over Big Bayou on Barnes Road
Open to pedestrians

Old Richardsville Road Bridge (Warren County, Kentucky)
Built 1889
Three span Bowstring Arch Truss bridge over Barren River on Old Richardsville Road in Bowling Green
Open to traffic

Old River Road Bridge (Warrick County, Indiana)
Built 1893
Through truss bridge over Little Pigeon Creek on Old River Road
Open to traffic

Old Route E Bridge (Newton County, Missouri)
Built 1922; made obsolete by bridge on new alignment in 1974
Five-span arch bridge over Shoal Creek on Old Route E, northwest of Granby
Open to traffic

Old Scotland Bridge (Boone County, Indiana)
Built 1901
Three-span stone arch bridge over Sugar Creek on CR 200E
Open to traffic

Old State Road Bridge (Clinton County, Illinois)
Built ca. 1930
Pony truss bridge over Beaver Creek on Old State Road (TR 109)
Open to one-lane traffic with a 6 ton weight limit

Old US 50 Viaduct (Cooper County, Missouri)
Built 1924
Tee beam bridge over the Union Pacific Railroad on Old US 50, just north of current US 50
Open to traffic

Olin Covered Bridge (Ashtabula County, Ohio)
Built 1873; reconstructed 1993
Covered bridge over Ashtabula River on Dewey Road (TH 334) in Edgewood
Open to traffic

Opossum Creek Bridge (Scott County, Virginia)
Built 1932
Pony truss bridge over Opossum Creek on Route 714
Open to traffic

Orange Road Bridge (Delaware County, Ohio)
Built 1898 by the Toledo Bridge Co.; rehabilitated 1970
Through truss bridge over Olentangy River on Orange Road (TR 114) in Powell
Open to one-lane traffic

Orange Street Bridge (Missoula County, Montana)
Built 1937; replaced 2003
Lost deck truss bridge over Clark Fork on Orange Street in Missoula
Replaced by new bridge

Oregon Creek Covered Bridge (Yuba County, California)
Built 1860 by Thomas Freeman
Covered bridge over Oregon Creek on Alleghany Road at Oregon Creek Campground
Closed to all traffic

Oriole Bridge (Cape Girardeau County, Missouri)
Built 1953
Stringer bridge with steel and wood piers over Little Indian Creek on Route V at Oriole
Open to two-lane traffic

Orr Road Bridge (Washington County, Arkansas)
Built 1924
Through truss bridge over Illinois River on Orr Road (CR 67) just off AR 265, southeast of Prairie Grove
Open to one-lane traffic

Orten Creek Bridge (Scott County, Arkansas)
Built 1915; rehabilitated 1984
Pony truss bridge over Orten Creek on CR 60
Open to one-lane traffic

Osage Creek Bridge (Benton County, Arkansas)
Built 1911 by the Youngstown Bridge Co. of Youngstown, Ohio
Through truss bridge over Osage Creek on CR 71 southeast of Healing Springs
Open to one-lane traffic

Osage Fork MO 32 Bridge (Laclede County, Missouri)
Built 1933
Through truss bridge over Osage Fork on MO 32
Open to traffic

Osage Fork MO 5 Bridge (Laclede County, Missouri)
Built 1932
Three-span pony truss bridge over Osage Fork on MO 5 in Twin Bridges
Open to traffic

Osage Valley Road Bridge (Cooper County, Missouri)
Built 1913; rehabilitated 1993
Pony truss bridge over Petite Saline Creek on Osage Valley Road
Open to traffic

Osiris Bridge (Cedar County, Missouri)
Built ca. 1910; replaced 2006
Lost pony truss bridge over Horse Creek on CR 1600
Replaced by a new bridge

Oswald Bridge (Madison County, Illinois)
Built 1937
Pony truss bridge over Sugar Creek on Michael Road, east of Highland, 1.5 mi. east of Highland
Open to traffic

Ottawa Street Bridge (Newton County, Missouri)
Built by the Canton Bridge Co.
Pony truss bridge over Little Lost Creek on Ottawa Street in Seneca
Open to traffic

Otter Creek Bridge (Chautauqua County, Kansas)
Built 1936 by the Works Progress Administration
Through truss bridge over Otter Creek, 4.2 mi. north of Cedarvale
Open to traffic

Otter Creek Covered Bridge (Ripley County, Indiana)
Built 1884 by Thomas A. Hardman; closed to traffic 1996
Covered bridge over Otter Creek on CR 850 West
Open to pedestrians only

Ouachita River CR 76 Bridge (Polk County, Arkansas)
Built 1914
Pony truss bridge over Ouachita River on CR 76
Open to one-lane traffic

Owens Creek Main City Road Bridge (Cass County, Missouri)
Built ca. 1940
Pony truss bridge over Owens Creek on Main City Road
Open to traffic

Owens Mill Bridge (Cedar County, Missouri)
Built ca. 1910 by the Canton Bridge Co.
Through truss bridge over Bear Creek on CR 1801
Open to one-lane traffic

Owl Creek Bridge (Allen County, Kansas)
Built 1909
Pony truss bridge over Owl Creek, 3.4 mi. west of Humboldt
Open to traffic

Oxly Military Road Bridge (Ripley County, Missouri)
Built ca. 1930
Wooden deck bridge over Logan Creek on CR 142E-30 (Old Military Road), just south of Oxly
Open to one-lane traffic

Ozark Mill Bridge (Christian County, Missouri)
Two-span through truss bridge over Finley Creek on W. McCracken Street (Old US 65) in Ozark
Open to traffic

Pa Fork of Fish Creek Bridge (Marshall County, West Virginia)
Built 1924
Through truss bridge over Pa Fork of Fish Creek on US 250
Open to traffic

Park Avenue Bridge (Greenlee County, Arizona)
Built 1918 by the Midland Construction Co.
Through truss bridge over San Francisco River on Park Avenue in Clifton
Open to traffic

Parr's Mill Covered Bridge (Columbia County, Pennsylvania)
Built 1865
Covered bridge over Roaring Creek on Parrs Mill Road, south of Catawissa
Open to traffic

Patoka River Bridge (Orange County, Indiana)
Built 1884
Through truss bridge over Patoka River on CR 850 South
Open to traffic

Patoka River Bridge (Orange County, Indiana)
Built 1888
Through truss bridge over Patoka River on CR 180 East
Open to traffic

Patton Bridge (Bollinger County, Missouri)
Built 1922
Two-span pony truss bridge over Little Whitewater River on MO 51 in Patton
Open to two-lane traffic on a paved road

Payette River Bridge (Payette County, Idaho)
Built 1927
Through truss bridge over Payette River on US 95
Open to traffic

Pedro Bridge (Benton County, Arkansas)
Built 1917 by the Pope Construction Co. of Jefferson City, MO
Through truss bridge over Illinois River on CR 196 between US 412 and Old AR 68
Closed to traffic

Pemiscot County Road 411 Bridge (Pemiscot County, Missouri)
Partially collapsed wooden bridge over Main Ditch No. 8 on CR 411 northeast of Deering
Closed to traffic, with middle span partially collapsed

Pemiscot County Road 413 Bridge (Pemiscot County, Missouri)
Wooden bridge over Main Ditch No. 8 on CR 413 northeast of Deering
Open to traffic

Pennsylvania Ave. Overpass (Oklahoma County, Oklahoma)
Built 1954, rehabilitated 1980.
Bridge over Pennsylvania Ave. on I-44 in Oklahoma City
Open to traffic

Perry Bridge (Jefferson County, Kansas)
Built 1926 by the Midland Bridge Co.
Through truss bridge over Delaware River on Bridge Street (Old US 24) just west of Perry in Perry
Open to two-lane traffic

Perry Highway Bridge (Mercer County, Pennsylvania)
Built 1928; rehabilitated 1975
Through truss bridge over Neshannock Creek on PA 19 (Perry Highway)
Open to traffic

Peterson Ford Bridge (Delaware County, Indiana)
Built 1902; rehabilitated 1985
Through truss bridge over Mississinewa River on CR 850 North
status pending

Petroleum Center Bridge (Venango County, Pennsylvania)
Built 1884 by the Morse Bridge Co.; rehabilitated 1984
Two-span through truss bridge over Oil Creek on PA 1004 (Eagle Rock Road)
Open to one-lane traffic

Petticoat Lane Bridge (Orange County, New York)
Built 1884 by the Groton Iron Bridge Co.
Through truss bridge over Shawangunk Kill on Petticoat Lane, northeast of Bloomingburgh
Open to traffic

Phillips Covered Bridge (Parke County, Indiana)
Built 1909 by J.A. Britton
Covered bridge over Rocky Run on CR 450W, southeast of Montezuma
Open to traffic

Pigeon Creek Bridge (Iroquois County, Illinois)
Built 1904
Lost through truss bridge over Pigeon Creek on TR 146, 0.5 mi. east of Cissna Pk
Replaced by a new bridge

Pikes Peak Bridge (Pulaski County, Missouri)
Built 1932
Through truss bridge over Gasconade River on MO 17 north of Waynesville
Open to two-lane traffic, but in very poor condition

Pin Oak Bridge (Madison County, Illinois)
Built ca. 1901; rehabilitated 1968
Pony truss bridge over Silver Creek on TR 236 (Pin Oak Road), 4.0 mi. northwest of Marine
Open to traffic

Pine Street Bridge (Snyder County, Pennsylvania)
Built 1952; rehabilitated 1992
Three-span pony truss bridge over Penns Creek on E. Pine Street (PA 1011) in Selinsgrove
Open to traffic

Pinhook Bridge (Putnam County, Indiana)
Built ca. 1910; rehabilitated 1984
Through truss bridge over Big Walnut Creek on CR 125 North
Closed

Pioneer Bridge (Siskiyou County, California)
Built 1931
Deck truss bridge over Shasta River on CA 263
Open to traffic

Pipe Creek Bridge (Ottawa County, Kansas)
Built 1915
Through truss bridge over Pipe Creek on P.7-7 Local, 2.7 mi. east and 6.0 mi. north of Minneapolis
Open to traffic

Plainview Road Bridge (Franklin County, Arkansas)
Built 1940; rehabilitated 1976
Pony truss bridge over an unnamed creek on Plainview Road (CR 537)
Open to traffic

Plass Ditch Bridge (Knox County, Indiana)
Built 1925
Pony truss bridge over Plass Ditch on CR 1350 South
Open to traffic

Platt Street Bridge (Hillsborough County, Florida)
Built 1926
Bascule bridge over Hillsborough River on Platt Street in Tampa
Open to traffic

Platte Purchase Bridge (Platte County, Missouri)
Built 1957; rehabilitated 1997
Through truss bridge over the Missouri River on Northbound US 69 in Kansas City
Open to northbound traffic

Platte River MO 45 Bridge (Platte County, Missouri)
Built 1933
Three-span through truss bridge over Platte River on MO 45 in Farley
Open to traffic with a 45 ton limit

Plattsmouth Bridge (Mills County, Iowa)
Built 1929
Through truss toll bridge over Missouri River on US 34 at Plattsmouth
Open to traffic

Pleasant Ridge Road Bridge (Caldwell County, Missouri)
Bedstead pony truss bridge over Cottonwood Creek on N.E. Pleasant Ridge Road
Open to traffic

Pleasant Street Bridge (Milwaukee County, Wisconsin)
Built 1972; improvements made in 1990
Bascule bridge over Milwaukee River on E. Pleasant Street in Milwaukee
Open to traffic

Plum Creek Bridge (Brown County, Kansas)
Built 1945
Pony truss bridge over Plum Creek, 0.4 mi. south and 5.6 mi. west of Powhattan
Open to traffic

Plummer Creek Bridge (Greene County, Indiana)
Built ca. 1910
Pony truss bridge over Plummer Creek on CR 150 East
Open to traffic

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

Pocahontas Bridge (Randolph County, Arkansas)
Built 1934 by the Pittsburgh-Des Moines Steel Co., replacing an earlier through truss structure located closer to the railroad bridge. Parallel bridge built 1986.
Through truss bridge with a center swing span over Black River on US 67 at Pocahontas
Open to two lanes of westbound traffic; eastbound traffic is carried by a parallel deck girder bridge

Point Remove Creek AR 124 Bridge (Conway County, Arkansas)
Built 1957-58
Through truss bridge over West Fork Point Remove Creek on AR 124
Open to traffic

Polk Road Bridge (Jefferson County, Indiana)
Built 1905
Pony truss bridge over Little Creek on Polk Road (CR 100S)
Open to one-lane traffic

Pomeroy-Mason Bridge (Meigs County, Ohio)
Built 1928; rehabilitated 1976
Cantilevered through truss bridge over Ohio River on OH 833 (formerly US 33) between Pomeroy, OH, and Mason, WV
Open to traffic

Pomme de Terre River Bridge (Polk County, Missouri)
Built 1914 by the Canton Bridge Co.
Through truss bridge over Pomme de Terre River on 117th Road, just beyond the end of Route NN
Open to traffic

Pomme de Terre River CR 273 Bridge (Hickory County, Missouri)
Through truss bridge over Pomme de Terre River on CR 273
Open to traffic

Pomme de Terre Route H Bridge (Polk County, Missouri)
Built 1946
Open-spandrel arch bridge over Pomme de Terre River on Route H
Open to traffic

Pondtown Mill Bridge (Adams County, Pennsylvania)
Built ca. 1880
Three-span stone arch bridge over Bermudian Creek on PA 1005 (Lattimore Valley Road) in Lake Meade
Open to traffic

Ponn Humpback Covered Bridge (Vinton County, Ohio)
Built 1874 by Martin McGrath & Lyman Wells; rehabilitated 1932
Covered bridge over Raccoon Creek on Wilkesville Road (TR 4)
Open to pedestrians only

Pony Creek Bridge (Brown County, Kansas)
Built ca. 1910
Pony truss bridge over Pony Creek, 0.7 mi. west and 1.7 mi. north of Morill
Open to traffic

Pony Creek Bridge (Brown County, Kansas)
Built 1935
Pony truss bridge over Pony Creek, 1.8 mi. east and 3.8 mi. north of Sabetha
Open to traffic

Popolopen Creek Bridge (Orange County, New York)
Built 1937; rehabilitated 1992
Deck truss bridge over Popolopen Creek on US 9W in West Point
Open to traffic

Port Arthur Street Bridge (Sevier County, Arkansas)
Built 1923
Small arch bridge over Little Bear Creek on Port Arthur Street in De Queen
Open to traffic

Portland Bridge (Fremont County, Colorado)
Built 1927
Deck truss over the Arkansas River on CO 120 at Portland in Penrose
Open to traffic

Possum Run Road Bridge (Warren County, Indiana)
Built 1925; rehabilitated 1965
Pony truss bridge over Possum Run on Possum Run Road
Open to traffic

Possum Trot Road Bridge (Moniteau County, Missouri)
Built ca. 1940
Pony truss bridge over Factory Creek on Possum Trot Road
Open to traffic

Poteau River Bridge (Le Flore County, Oklahoma)
Built 1946
Through truss bridge over Poteau River on US 271 in Pocola
Open to traffic

Pott's Ford Bridge (Cloud County, Kansas)
Built 1884 by the Wrought Iron Bridge Co.
Through truss bridge over Solomon River on a local road, southwest of Glasco
Open to one-lane traffic

Pottawatomie Creek Bridge (Miami County, Kansas)
Built 1932; rehabilitated 1995
Three span through arch bridge over Pottawatomie Creek on Old KS 7 in Osawatomie
Open to traffic

Powell Bridge (McDonald County, Missouri)
Through truss bridge over Big Sugar Creek on Cowan Ridge Road (CR SE-E-58), just southwest of Route E near Powell
Open to one-lane traffic with a 3 ton weight limit

Prairie Creek Bridge (Linn County, Iowa)
Built 1906; rehabilitated 1989
Through truss bridge over Prairie Creek on Old Bridge Road in Cedar Rapids
Open to traffic

Prairie Dog Creek Bridge (Phillips County, Kansas)
Built ca. 1910
Pony truss bridge over Prairie Dog Creek, 0.5 mi. north and 0.5 mi. east of Long Island
Open to traffic

Prairie Dog Creek Bridge (Phillips County, Kansas)
Built 1924
Pony truss bridge over Prairie Dog Creek, 1.5 mi. south and 1.0 mi. west of Long Island
Open to traffic

Prairie Dog Creek Bridge (Phillips County, Kansas)
Pony truss bridge over Prairie Dog Creek, 3.0 mi. north and 4.0 mi. east of Long Island
Open to traffic

Prairie Fork Bridge (Christian County, Illinois)
Pony truss bridge over Prairie Fork on TR 297
Open to traffic

Pretty Prairie Road Bridge (Tippecanoe County, Indiana)
Built 1925; rehabilitated 1977
Four-span concrete arch bridge over Tippecanoe River on Pretty Prairie Road
Open to traffic

Prospect Bridge (Marion County, Ohio)
Built 1913 by the Standard Engineering Co.; rehabilitated 1985
Lost through truss bridge over Scioto River on OH 47 in Prospect
Replaced

Pruitt Bridge (Newton County, Arkansas)
Built 1931 by the Virginia Bridge & Iron Co.
Through truss bridge over Buffalo River on AR 7
Open to traffic

Purdy Marsh Bridge (Knox County, Indiana)
Built 1905
Pony truss bridge over Purdy Marsh on CR 1050 East
Closed to all traffic

Purgatoire River US 350 Bridge (Las Animas County, Colorado)
Built 1937
Pony truss bridge over Purgatoire River on US 350
Open to two-lane traffic on a major state highway