Aiken Street Bridge
Five-span through truss bridge over Merrimack River on Aiken Street in Lowell
Open to traffic
Built 1883 by the Corrugated Metal Co. (Berlin Iron Bridge Co.)

Andover Road Bridge
Wooden bridge over MBTA/BMRR on Andover Road in Billerica
Open to traffic
Built 1927; rehabilitated 1980

Assabet River Bridge
Concrete arch bridge over Assabet River on MA 2 (Elm Street) in Concord
Open to traffic
Built 1904; rehabilitated 1934

Assabet River Bridge
Stone arch bridge over Assabet River on MA 62 (Main Street) in Concord
Open to traffic
Built 1886; rehabilitated 1902

Assabet River Bridge
Stone arch bridge over Assabet River on MA 85 (Washington Street) in Hudson
Open to traffic
Built 1900; rehabilitated 1940

Assabet River Bridge
Stone arch bridge over Assabet River on MA 117 (Great Road) in Maynard
Open to traffic
Built 1900; rehabilitated 1922

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

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

Boden Lane Bridge
Pony truss bridge over CSX Railroad/MBTA on Boden Lane in Natick
Open to traffic
Built 1891; rehabilitated 1993

Bridge Street Bridge
Through truss bridge over Merrimack River on Bridge Street in Lowell
Open to traffic
Built 1937

Butters Row Bridge
Wooden bridge over MBTA/BMRR on Butters Row in Wilmington
Open to traffic
Built 1920; rehabilitated 1987

Charles River Bridge
Concrete arch bridge over Charles River on MA 9 (Boylston Street) in Newton
Open to traffic
Built 1900; rehabilitated 1932

Charles River Bridge
Concrete arch bridge over Charles River on MA 16 (Washington Street) in Newton
Open to traffic
Built 1929

Charles River Bridge
Concrete arch bridge over Charles River on MA 16 (Galen Street) in Watertown
Open to traffic
Built 1907

Concord River Bridge
Concrete arch bridge over Concord River on MA 3A (Boston Road) in Billerica
Open to traffic
Built 1920

Concord River Bridge
Pair of concrete arch bridges over Concord River on US 3 in Billerica
Open to traffic
Built 1953

Concord River Bridge
Stone arch bridge over Concord River on MA 110 in Lowell
Open to traffic
Built 1858; rehabilitated 1961

Concord Street Bridge
Concrete arch bridge over Sudbury River on Concord Street in Ashland
Open to traffic
Built 1920

Cross Street Bridge
Through truss bridge over MBTA/BMRR on Cross Street in Somerville
Open to traffic
Built 1928

Farwell Street Bridge
Deck truss bridge over Charles River on Farwell Street in Waltham
Open to traffic
Built 1850; rehabilitated 1933

Fort Pond Brook Bridge
Stone arch bridge over Fort Pond Brook on MA 27 (Main Street) in Acton
Open to traffic
Built 1900

Franklin Street Bridge
Concrete arch bridge over Sudbury River on Franklin Street in Framingham
Open to traffic
Built 1934

George Brown Street Bridge
Wooden bridge over MBTA/BMRR on George Brown Street in Billerica
Open to traffic
Built 1927

Groton Street Bridge
Covered bridge over Nashua River on Groton Street in Pepperell
Open to traffic
Built 1962

Hammond Street Bridge
Pony truss bridge over Green Line on Hammond Street in Newton
Open to traffic
Built 1900; rehabilitated 1939

Hemlock Gorge Bridge
Concrete arch bridge over Hemlock Gorge on MA 9 (Boylston Street) in Newton
Open to traffic
Built 1932

Jackson Street Bridge
Wooden bridge over MBTA/BMRR on Jackson Street in Waltham
Open to traffic
Built 1934; rehabilitated 1989

Land Blvd. Bridge
Bascule bridge over Broad Canal on Land Blvd. in Cambridge
Open to traffic
Built 1956

Lowell Street Bridge
Pony truss bridge over MBTA/BMRR on Lowell Street in Somerville
Closed to all traffic
Built 1910

Lowell Street Bridge
Pony truss bridge over BMRR Spur on Lowell Street in Somerville
Closed to all traffic
Built 1910

Main Street Bridge
Pony truss bridge over MBTA/BMRR on MA 2A (East Main Street) in Ayer
Open to traffic
Built 1949

Main Street Bridge
Pony truss bridge over MBTA/BMRR on US 20 (Main Street) in Waltham
Open to traffic
Built 1936; rehabilitated 1991

Malden River Bridge
Bascule bridge over Malden River on MA 16 in Everett
Open to traffic
Built 1954; rehabilitated 1973

Marion Street Bridge
Pony truss bridge over CSX Railroad/MBTA on Marion Street in Natick
Open to traffic
Built 1896; rehabilitated 2003

Martins Brook Bridge
Concrete arch bridge over Martins Brook on MA 28 (Main Street) in North Reading
Open to traffic
Built 1903; rehabilitated 1992

McGrath Highway Bridge
Through truss bridge over MBTA/BMRR on MA 28 (McGrath Highway) in Somerville
Open to traffic
Built 1908; rehabilitated 1983

Merriam Street Bridge
Wooden bridge over MBTA/BMRR on Merriam Street in Weston
Open to traffic
Built 1928; rehabilitated 1980

Merrimack River Bridge
Steel through arch bridge over Merrimack River on MA 113/MA 3A in Tyngsborough
Open to traffic
Built 1930; rehabilitated 1975

Morton Street Bridge
Wooden bridge over BMRR on Morton Street in Lowell
Open to traffic
Built 1929; rehabilitated 1982

Mystic River Bridge
Concrete arch bridge over Mystic River on MA 60 (Medford Street) in Arlington
Open to traffic
Built 1936

Mystic River Bridge
Concrete arch bridge over Mystic River on MA 16 in Medford
Open to traffic
Built 1906

Mystic River Bridge
Concrete arch bridge over Mystic River on MA 16 in Medford
Open to traffic
Built 1906

Nashawtuc Road Bridge
Stone arch bridge over Sudbury River on Nashawtuc Road in Concord
Open to traffic
Built 1883

Newton Street Bridge
Wooden bridge over MBTA/BMRR on Newton Street in Waltham
Open to traffic
Built 1930; rehabilitated 1977

Pelham Island Road Bridge
Concrete arch bridge over Sudbury River on Pelham Island Road in Wayland
Open to traffic
Built 1930

Power Canal Bridge
Stone arch bridge over Power Canal on MA 62 (Main Street) in Concord
Open to traffic
Built 1885; rehabilitated 1978

School Street Bridge
Stone arch bridge over Stony Brook on School Street in Chelmsford
Open to traffic
Built 1850

Shawsheen River Bridge
Stone arch bridge over Shawsheen River on MA 129 (Salem Road) in Billerica
Open to traffic
Built 1932

Squannacook River Bridge
Stone arch bridge over Squannacook River on Canal Street in Townsend
Open to traffic
Built 1850; rehabilitated 1976

Stoney Brook Bridge
Stone arch bridge over Stoney Brook on MA 30 (Pleasant Street) in Framingham
Open to traffic
Built 1895

Stony Brook Road Bridge
Stone arch bridge over Stony Brook on Stony Brook Road in Westford
Open to traffic
Built 1880

Sudbury River Bridge
Stone arch bridge over Sudbury River on Elm Street in Concord
Open to traffic
Built 1874; rehabilitated 1932

Sudbury River Bridge
Concrete arch bridge over Sudbury River on MA 62/MA 2A in Concord
Open to traffic
Built 1909

Sudbury River Bridge
Concrete arch bridge over Sudbury River on MA 117 in Concord
Open to traffic

Sudbury River Bridge
Concrete arch bridge over Sudbury River on MA 2 (Concord Turnpike) in Concord
Open to traffic
Built 1934

Sudbury River Bridge
Pony truss bridge over Sudbury River on Main Street in Framingham
Closed to all traffic
Built 1878; rehabilitated 1952

Sudbury Road Bridge
Wooden bridge over Assabet River on Sudbury Road in Stow
Open to traffic
Built 1902; rehabilitated 1985

Sudbury Road Bridge
Wooden bridge over Assabet River on Sudbury Road in Stow
Open to traffic
Built 1902; rehabilitated 1985

Sycamore Street Bridge
Pony truss bridge over MBTA/BMRR on Sycamore Street in Somerville
Open to traffic
Built 1902

Town Farm Lane Bridge
Wooden bridge over MBTA/BMRR on Town Farm Lane in Billerica
Open to traffic
Built 1925; rehabilitated 1984

University Avenue Bridge
Deck truss bridge over Merrimack River on Univrsty Avenue in Lowell
Open to traffic

Walker Street Bridge
Pony truss bridge over BMRR on Walker Street in Lowell
Open to traffic
Built 1910; rehabilitated 1994

Western Canal Bridge
Stone arch bridge over Western Canal on Broadway in Lowell
Open to traffic
Built 1833; rehabilitated 1923

Weston Reservoir Bridge
Concrete arch bridge over Weston Reservoir on Ash Street in Weston
Open to traffic
Built 1902

Whitcomb Avenue Bridge
Concrete arch bridge over Eastbound MA 2 on Whitcomb Avenue in Littleton
Open to traffic
Built 1950

Willard Brook Bridge
Concrete arch bridge over Willard Brook on MA 31 (State Road) in Ashby
Open to traffic
Built 1908; rehabilitated 1932

Willard Brook Bridge
Stone arch bridge over Willard Brook on MA 119 (River Road) in Townsend
Open to traffic
Built 1908; rehabilitated 1931

Willard Brook Bridge
Stone arch bridge over Willard Brook on MA 119 (River Road) in Townsend
Open to traffic
Built 1908; rehabilitated 1931

Willard Brook Bridge
Stone arch bridge over Willard Brook on MA 119 (River Road) in Townsend
Open to traffic
Built 1908; rehabilitated 1931

Winter Street Bridge
Stone arch bridge over Sudbury River on Winter Street in Framingham
Open to traffic
Built 1870