Built 1850

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Beaver Brook East Stream Bridge (Middlesex County, Massachusetts)
Built 1850; rehabilitated 1921
Stone arch bridge over Beaver Brook East Stream on MA 113 (Pleasant Street) in Dracut
Open to traffic

Beaver Brook West Stream Bridge (Middlesex County, Massachusetts)
Built 1850; rehabilitated 1921
Stone arch bridge over Beaver Brook West Stream on MA 113 (Pleasant Street) in Dracut
Open to traffic

Bells Mill Bridge (Westmoreland County, Pennsylvania)
Built 1850; rehabilitated 1988
Wooden covered bridge over Sewickley Creek
Open to light auto traffic

Belly Creek OH 24 Bridge (Henry County, Ohio)
Built 1850
Stone arch bridge over Belly Creek on OH 24
Open to traffic

Benier Creek OH 424 Bridge (Henry County, Ohio)
Built 1850
Stone arch bridge over Benier Creek on OH 424
Open to traffic

Bridge Street Bridge (Bristol County, Massachusetts)
Built 1850
Stone arch bridge over Ten Mile River on Bridge Street in Attleboro
Open to traffic

Broad Street Bridge Hatfield, PA (Montgomery County, Pennsylvania)
Built 1850; rehabilitated 1990 CA
Stone arch bridge over a branch Neshaminy Creek on Broad Street in Hatfield
Open to traffic

Buskirk Covered Bridge (Rensselaer County, New York)
Built 1850; rehabilitated 2005
Covered bridge over Hoosic River on CR 103
Open to traffic

C&O Canal Paw Paw Tunnel (Allegany County, Maryland)
Bulding began in 1836, finished 1850
Tunnel on C&O Canal
Open to pedestrians

Carpenter Road Bridge (Worcester County, Massachusetts)
Built 1850; rehabilitated 1985
Wooden bridge over PWRR on Carpenter Road in Dudley
Open to traffic

Centennial Avenue Bridge (Essex County, Massachusetts)
Built 1850; rehabilitated 1983
Wooden bridge over MBTA on Centnnial Avenue in Gloucester
Open to traffic

Coldwater Covered Bridge (Calhoun County, Alabama)
Built ca 1850 over Coldwater Creek; Relocated in 1990 to city park and placed over an outlet from Oxford Lake
Multiple Kingpost through truss bridge over inlet to Oxford Lake on Trail in Oxford
Open to pedestrians

Congress Street Bridge (Suffolk County, Massachusetts)
Built 1930; rehabilitated 2008
Bascule bridge over Fort Point Channel on Congress Street in Boston
Open to traffic

East and West Paden Bridges (Columbia County, Pennsylvania)
The Twin Bridges were constructed and named after John Paden who operated a nearby sawmill.
Queenpost through truss bridge over Huntington Creek
Open to pedestrians

East Branch Callicoon Creek Bridge (Sullivan County, New York)
Built 1850
Stone arch bridge over East Branch Callicoon Creek on TR 38 (Sickmiller Road)
Open to traffic

Farwell Street Bridge (Middlesex County, Massachusetts)
Built 1850; rehabilitated 1933
Deck truss bridge over Charles River on Farwell Street in Waltham
Open to traffic

Fishers' Point Stone Arch Bridge (Hancock County, Illinois)
Built ca 1850
Stone arch bridge on Path
Open to pedestrians

Five Mile River Bridge (Fairfield County, Connecticut)
Built 1850; rehabilitated 1927
Concrete arch bridge over Five Mile River on US 1 in Norwalk
Open to traffic

Forksville Covered Bridge (Sullivan County, Pennsylvania)
Built 1850 by Samuel Sadler Rogers; rehabilitated 2004
Covered bridge over Loyalsock Creek on PA 4012 in Forksville
Open to traffic

Hillsgrove Covered Bridge (Sullivan County, Pennsylvania)
Built 1850; rehabilitated 1963
Covered bridge over Loyalsock Creek on Covered Bridge Road (TR 357)
Open to traffic

Hitchings Road Bridge (Onondaga County, New York)
Built 1850; rehabilitated 1933
Stone arch bridge over West Branch Onondaga Creek on Hitchings Road
Open to traffic

Howlands Lane Bridge (Plymouth County, Massachusetts)
Built 1850; rehabilitated 1940
Wooden bridge over MBTA on Howlands Lane in Kingston
Open to traffic

Ipswich River Bridge (Essex County, Massachusetts)
Built 1850; rehabilitated 1922
Stone arch bridge over Ipswich River on US 1 in Topsfield
Open to traffic

Jackson Street Bridge (Hampden County, Massachusetts)
Built 1850; rehabilitated 1920
Stone arch bridge over Third Level Canal Spillway on Jackson Street in Holyoke
Open to traffic

Jediah Hill Covered Bridge (Hamilton County, Ohio)
Built 1850
Queenpost through truss bridge over West Fork, Mill Creek in Mount Healthy
Open to traffic

Leeper Covered Bridge (Guernsey County, Ohio)
Built 1850
Lost Multiple Kingpost through truss bridge over Salt Creek
Lost

MBTA (Abandoned) Bridge (Bristol County, Massachusetts)
Built 1850; rehabilitated 1950
Wooden bridge over MBTA (Abandoned) on Bay Street in Taunton
Open to traffic

Merrimack River Bridge (Essex County, Massachusetts)
Built 1850; rehabilitated 1966
Swing bridge over Merrimack River on Main Street in Amesbury
Open to traffic

Millers River Bridge (Worcester County, Massachusetts)
Built 1850; rehabilitated 1921
Pony truss bridge over Millers River on MA 32 (Chestnut Hill Avenue) in Athol
Open to traffic

Onondaga Creek Bridge (Onondaga County, New York)
Built 1850; rehabilitated 1907
Stone arch bridge over Onondaga Creek on NY 5 in Syracuse
Open to traffic

Palmer River Bridge (Bristol County, Massachusetts)
Built 1850; rehabilitated 1929
Stone arch bridge over Palmer River on US 44 (Winthrop Street) in Rehoboth
Open to traffic

Poor Meadow Brook Bridge (Plymouth County, Massachusetts)
Built 1850; rehabilitated 1937
Stone arch bridge over Poor Meadow Brook on MA 27 (Main Street) in Hanson
Open to traffic

Potter Road Bridge (Worcester County, Massachusetts)
Built 1850; rehabilitated 2002
Wooden bridge over Mumford River on Potter Road in Douglas
Open to traffic

Powwow River Bridge (Essex County, Massachusetts)
Built 1850
Stone arch bridge over Powwow River on MA 150 (Main Street) in Amesbury
Open to traffic

Quinsigamond River Bridge (Worcester County, Massachusetts)
Built 1850; rehabilitated 1994
Metal arch bridge over Quinsigamond River on MA 140 (N. Main Street) in Grafton
Open to traffic

Reeds Bridge Road Bridge (Franklin County, Massachusetts)
Built ca.1850; reconstructed 1984; replaced ?
Lost through truss bridge over South River on Reeds Bridge Road in Conway
Replaced

School Street Bridge (Middlesex County, Massachusetts)
Built 1850
Stone arch bridge over Stony Brook on School Street in Chelmsford
Open to traffic

Sequin Bridge (Chittenden County, Vermont)
Built 1850
Burr arch-truss bridge over Lewis Creek on Roscoe Road
Open to traffic

Seven Mile River Bridge (Bristol County, Massachusetts)
Built 1850; rehabilitated 1999
Wooden bridge over Seven Mile River on Pitas Street in Attleboro
Open to traffic

Sheeder Mill Road Bridge (Chester County, Pennsylvania)
Built 1887; rehabilitated 1960
Through truss bridge over French Creek on Sheeder Mill Road
Open to traffic

Shreeder-Hall Covered Bridge (Chester County, Pennsylvania)
Built 1850; rehabilitated 1996
Through truss bridge over French Creek on Hollow Road
Open to traffic

Smith Bridge Road Bridge (Grafton County, New Hampshire)
Built 1850; rehabilitated 2001
Covered bridge over Baker River on Smith Bridge Road in Plymouth
Open to traffic

Spicket River Bridge (Essex County, Massachusetts)
Built 1850
Stone arch bridge over Spicket River on MA 28 (Broadway) in Methuen
Open to traffic

Squannacook River Bridge (Middlesex County, Massachusetts)
Built 1850; rehabilitated 1976
Stone arch bridge over Squannacook River on Canal Street in Townsend
Open to traffic

Stafford Hollow Road Bridge (Hampden County, Massachusetts)
Built 1850; rehabilitated 1960
Wooden bridge over NECRR on Stafford Hollow Road in Monson
Open to traffic

Summer Street Bridge (Bristol County, Massachusetts)
Built 1850
Wooden bridge over BCRR on MA 140 (Summer Street) in Taunton
Open to traffic

Third Level Canal Bridge (Hampden County, Massachusetts)
Built 1850
Stone arch bridge over Third Level Canal on Race Street in Holyoke
Open to traffic

Town River Bridge (Plymouth County, Massachusetts)
Built 1850; rehabilitated 1974
Stone arch bridge over Town River on Arch Street in West Bridgewater
Open to traffic

Water Acushnet River Bridge (Bristol County, Massachusetts)
Built 1850; rehabilitated 1959
Stone arch bridge over Water Acushnet River on Hwy Main Street
Open to traffic

Water Powwow River Bridge (Essex County, Massachusetts)
Built 1850
Stone arch bridge over Water Powwow River on Hwy Pond Street
Open to traffic

Western & Atlantic Tunnel (Whitfield County, Georgia)
Excavation started in 1848, first train of cars passed through 1850, The Great Locomotive Chase passed through April 12th 1862 during the Civil War, abandoned 1928 when new tunnel was built just to the north, refurbished 1990's, reopened 2000
Tunnel under Chetoogeta Mountain on abandoned alignment of the Western & Atlantic, later Nashville Chattanooga & St. Louis Railroad in Tunnel Hill
Open to pedestrians per museum schedule

Wheatland Ferry (Marion County, Oregon)
Established 1850's, Current ferry built in 2001
Ferry across Willamette River on Wheatland Rd/Matheny Rd
Open to traffic