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