Lost 1970

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AR42 St Francis Bay Bridge (Old) (Cross County, Arkansas)
Moved and reerected here in 1944-45, Replaced 1970
Pratt through truss bridge over St. Francis Bay Ditch on AR 42

B&M - Suncook River Town Deck Truss (Merrimack County, New Hampshire)
Built ?; Collapsed 1970
Lost Town lattice deck truss bridge over Suncook River on Boston & Maine Railroad

Beverly-Waterford Bridge (Old) (Washington County, Ohio)
Built 1913, Replaced 1970
Lost Through truss bridge over Muskingum River on Rte 339
Replaced by new bridge

Central College Bridge (Franklin County, Ohio)
Built 1898, replaced in 1970
Lost Pratt through truss Bridge over Big Walnut Creek on Central College Road
Replaced by a new bridge

Des Arc Swinging Bridge (Prairie County, Arkansas)
Built 1940-41; Removed in 1970
Lost swinging bridge over White River on AR 38 at Des Arc
No longer exists

Diversion Channel MO 91 Bridge (Bollinger County, Missouri)
Built 1922; replaced 1970
Lost bridge over the Diversion Channel on MO 91 north of Advance
No longer exists, but vestiges of old roadbed still visible

Hawk Street Viaduct (Albany County, New York)
Built 1890; Repaired 1925; Closed to everyone but pedestrians 1968; Razed 1970
Cantilevered steel arch bridge over Sheridan Hollow on Hawk Street

Hoben Bridge (Louisa County, Iowa)
Built 1889; Condemned 1963 due to the center lally column shifting; Removed 1970
Lost Pratt through truss bridge over Iowa River on Road

IC - Millrace Bridge (Black Hawk County, Iowa)
Lost 1970
Lost Deck plate girder bridge over Millrace on Illinois Central Railroad
Filled in

Main Street Bridge (Cerro Gordo County, Iowa)
Built 1910; Removed ca. 1970
Lost Closed-spandrel arch bridge over Willlow Creek on Main Street

Manchester Bridge (Allegheny County, Pennsylvania)
Built 1911; demolished 1970
Lost through truss bridge over the Allegheny River at The Point in Pittsburgh
Replaced by new bridge

McDonald Covered Bridge 37-10-01x (Douglas County, Oregon)
Built 1932, Replaced 1970
Lost covered Howe through truss bridge over Lake Creek on Elk Ridge Road
Replaced by new bridge

MILW - Park Junction Covered Bridge (Pierce County, Washington)
Built 1938 as uncovered bridge; siding added 1960s; Removed ca. 1970
Lost Howe through truss bridge over Nisqually River on former CMStP&P (Milwaukee Road)
Replaced by a new bridge

Montauk Highway Shinnecock Canal Bridge (Old) (Suffolk County, New York)
Built 1907; Replaced 1970
Lost Parker through truss bridge over Shinnecock Canal on Montauk highway
Replaced by a new bridge

Old Deschutes Road Bridge (Shasta County, California)
Pier encased in concrete 1925; Converted to road use 1944 ; Replaced 1970
Lost Pratt through truss bridge over Sacramento River on Deschutes Road
Replaced by a new bridge

Old Loomis Street Bridge (Cook County, Illinois)
Built 1904 to replace earlier swing bridge; replaced 1970
Lost Scherzer rolling lift bridge over South Branch Chicago River on Loomis Street
Replaced by a new bridge

Panther Creek Bridge (White County, Arkansas)
Built 1928 ; Replaced 1970
Lost Pony truss bridge over Panther Creek on AR 16
Replaced by new bridge

Point Bridge (2nd) (Allegheny County, Pennsylvania)
Built 1927; Replaced and closed 1959; Demolished 1970
Lost Through truss bridge over Monongahela River
Replaced by a new bridge and later removed

RI - Millrace Bridge (E) (Black Hawk County, Iowa)
Lost 1970
Lost Bridge over Millrace on Chicago, Rock Island & Pacific Railroad
Filled in

Skaggs Bridge (Pulaski County, Missouri)
Replaced by the Pikes Peak Bridge in 1932
Lost multi-span through truss bridge over Gasconade River between Crocker and Waynesville
Replaced by new bridge

Slade's Ferry Bridge (Bristol County, Massachusetts)
Built 1875; Swing span struck 1932 by a tanker and replaced with a bascule; Replaced 1970
Lost double-decker truss bridge over Taunton River on Remington Avenue

South Amana Bridge (Old) (Iowa County, Iowa)
Built 1941; Replaced 1970
Lost Bridge over Iowa River on IA 220
Replaced by a new bridge

South Windsor Covered Bridge 35-04-26x (Ashtabula County, Ohio)
The South Windsor or Plank Road Covered Bridge carried Old Plank Road across the Grand River in Windsor Township, Ashtabula County Ohio, 1870-1970.
Lost Town lattice truss bridge over Grand River on Twp Rd. 526 Old Plank Road
Destroyed by fire

Stanislaus River Bridge (NB) (San Joaquin County, California)
Built 1948; replaced 1970
Concrete Arch

TP&W - Illinois River Bridge (Tazewell County, Illinois)
Removed 1970 after being damaged by a barge tow.
Lost Pratt through truss bridge over Illinois River on Toledo Peoria & Western Railway
Destroyed by collision

US61 Skunk River Bridge (Old) (Lee County, Iowa)
Built 1928; Replaced 1970
Lost Through truss bridge over Skunk River on US 61
Replaced by a new bridge

Verdigris River Bridge (Rogers County, Oklahoma)
Built 1930s demolished 1970
K-Parker through truss bridge over Verdigris River on State Route 33
Replaced by a new bridge

Watonwan Valley Railway Viaduct (Martin County, Minnesota)
Abandoned in the 1970s when the railroad ceased service. Part of the span was removed. The railway line served Fairmont, Truman and Madelia.
Abandoned bridge over Center Creek on Watonwan Valley Railway, later Chicago, St. Paul, Minneapolis, and Omaha Railway in Fairmont