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Middlesex County
Aiken Street Bridge [Map · Street View] Five-span lenticular through truss bridge over Merrimack River on Aiken Street in LowellOpen to trafficBuilt 1883 by the Berlin Iron Bridge Co.; Rehabilitated 1998
Andover Road Bridge [Map] Wooden bridge over MBTA/BMRR on Andover Road in BillericaReplaced by a new bridgeBuilt 1927; rehabilitated 1980; replaced 2006
B&A - Charles River Bridge [Map] Lost Lattice deck truss bridge over Charles River on Boston & Albany RailroadReplaced by a new bridgeBuilt 1893; replaced 1916
Beaver Street Bridge [Map] Deck plate girder bridge over Beaver Brook on Beaver StreetIntact but closed to all trafficBuilt 1971
Bedford Bridge [Map] Concrete tee beam bridge over Concord River on Massachusetts Route 225 (Carlisle Road)Open to trafficBuilt 1955
BM - Bruces Pond Bridge [Map] Abandoned timber stringer bridge over Bruce's Pond on B&M Central Mass BranchDerelict/abandonedBuilt 1932
BM - Clark Street Bridge [Map] Lost Howe pony truss bridge over Boston & Maine RR on Clark StreetReplaced by a new pedestrian bridgeBuilt 1908
BM - I-95/MA-128 Bridge [Map · Street View] Abandoned pony/through plate girder bridge over MA-128/I-95 on B&M Central Massachusetts Branch (abandoned)Derelict/abandonedBuilt 1960, rehabilitated 1988
BM - MBTA Fitchburg Line Overpass [Map] Abandoned lattice through truss bridge over MBTA Fitchburg Line on B&M Central Massachusetts Branch (abandoned)Derelict/abandonedBuilt 1896, Abandoned 1987
BM - Mystic River Drawbridge [Map] Warren deck truss bridge over Mystic River on Boston & Maine RailroadReplaced by a new bridgeBuilt 1893-4; Deck trusses added 1917; Tower rebuilt 1933; Stringers added 1955-56; Replaced 1989
BM - Stony Brook Bridge [Map] Stone arch bridge over Stony Brook on B&M Central Mass BranchIntact but closed to all trafficBuilt 1881
Boden Lane Bridge [Map · Street View] Pony truss bridge over CSX Railroad/MBTA on Boden Lane in NatickRemoved but not replacedBuilt 1891; rehabilitated 1993; closed and demolished in 2020
Brooks Bridge [Map] Lost Stone arch bridge over Middlesex Canal on Brooks Road in Medford.Removed but not replacedBuilt 1821
Canalwalk Bridge [Map · Street View] Deck plate girder bridge over Pawtucket Canal on Canalwalk (Formerly Boston & Maine Railroad)Open to pedestrians only
Charles River Dam Bridge [Map · Street View] Bascule bridge over Charles River on MA 28 in BostonReplaced by a new bridgeBuilt 1910 as a pair of parallel single leaf bascules; entire superstructure and mechanics demolished and replaced in 1962 with double-leaf bascule; rehabilitated 1992; entire superstructure replaced 2010-2011 with fixed trunnion bascule.
Chester Waterous Bridge [Map] Lost covered bridge over Nashua River on Groton Street in PepperellReplaced by a new bridgeBuilt 1962, replaced 2010
Commercial Avenue Bridge [Map] Lost deck plate girder bridge over Lechmere Canal on Commercial AvenueNo longer existsBuilt 1907; major rebuild 1938; fixed closed 1974; replaced 1986
Concord River Bridge [Map] Pair of concrete arch bridges over Concord River on US 3 in BillericaReplaced by a new bridgeBuilt 1953
Concord Road Bridge [Map] Deck arch bridge over B&M Central Mass Branch (abd) on Concord RoadOpen to trafficBuilt 1911
Cook's Bridge [Map · Street View] Stone arch bridge over Charles River on Elliot StreetOpen to trafficBuilt 1857; Widened 1897; rehabilitated in 2016
Dana Bridge [Map] Steel stringer bridge over Mystic River on MBTA Orange Line & Commuter Rail Haverhill LineOpen to traffic
Eliot Bridge [Map · Street View] Brick-faced concrete arch bridge over Charles River on Eliot Bridge in BostonOpen to trafficBuilt 1950
Fitch's Bridge [Map] Double-intersection Warren through truss bridge over Nashua River on Fitch Bridge RoadDemolished and replaced with an ugly pedestrian MOB (Mail Order Bridge).Built 1898; Closed to traffic 1965; Demolished 2013
George Brown Street Bridge [Map] Wooden bridge over MBTA/BMRR on George Brown Street in BillericaReplaced by a new bridgeBuilt 1927, replaced 2005
Hale Street Bridge [Map] Lost Pennsylvania through truss bridge over Boston & Maine Railroad/Massachusetts Bay Transportation Authority on YMCA Drive/Hale StreetReplaced by a new bridgeBuilt 1892; rehabilitated 1965; Replaced 1997
Hammond Street Bridge (Old) [Map] Lost Double-intersection Warren pony truss bridge over MBTA Green Line on Hammond StreetSuperstructure replacedBuilt 1893, rehabilitated 1939, trusses replaced 1990
Harvard Bridge [Map · Street View] Deck plate girder bridge over Charles River on MA 2A (Massachusetts Avenue)Open to trafficBuilt 1891; reconstructed 1990
Hemlock Gorge Bridge [Map] Concrete arch bridge over Hemlock Gorge on MA 9 (Boylston Street) in NewtonOpen to trafficBuilt 1932
High Street Bridge [Map] Lost Double-intersection Warren pony truss bridge over Boston & Albany Railroad on High StreetReplaced by a new bridge; trusses relocated to MillburyBuilt 1890; rehabilitated 1921; replaced 1999; relocated to Blackstone River Bikeway 2001
Howe Street Bridge [Map] Lost Warren pony truss with no verticals bridge over Boston & Albany Railroad on Howe StreetReplaced by a new bridgeBuilt 1891 by R.F. Hawkins Iron Works; replaced 1990
Hunts Falls Bridge [Map] Deck plate girder bridge over Merrimack River on Nesmith StreetOpen to trafficBuilt 1954; rehabilitated 2012
John D. Hand Memorial Bridge [Map] Deck plate girder bridge over Mystic River on Pedestrian Walkway & water supply pipelinesOpen to pedestrians onlyBuilt 1897
Lawrence Street Bridge [Map] Concrete stringer bridge over Concord River on Lawrence StreetOpen to trafficBuilt 1850; rehabilitated 1951
Lechmere Canal Bridge [Map] Closed-spandrel arch bridge over Lechmere Canal on Edwin H. Land BoulevardOpen to trafficBuilt 1986 to replace previous Commerical Avenue Bridge
Longfellow Bridge [Map · Street View] Steel arch bridge over Charles River on Mass. Hwy 3 (Cambridge Street) and MBTA Red Line in Boston and CambridgeOpen to trafficBuilt 1906; rehabilitated 1959 and 2011
Lowell Road Bridge [Map] Deck plate girder bridge over Concord River on Lowell RoadOpen to trafficBuilt 1964
Lower Falls Trail Bridge [Map] Deck plate girder bridge over Charles River on Charles River Bike PathOpen to pedestrians onlyBuilt 1910, Abandoned 1970
Main Street Bridge [Map · Street View] Bowstring pony truss bridge over Sudbury River on Main Street in FraminghamOpen to trafficBuilt 1878; rehabilitated 1952; Rehabbed in 2009
Main Street Bridge [Map] Pony truss bridge over MBTA on Main Street SR 27Replaced by a new bridgeBuilt 1906; replaced 1997
Marion Street Bridge [Map · Street View] Pony truss bridge over CSX Railroad/MBTA on Marion Street in NatickReplaced by a new bridgeBuilt 1896; rehabilitated 2003; replaced 2017
Martins Brook Bridge [Map] Concrete arch bridge over Martins Brook on MA 28 (Main Street) in North ReadingOpen to trafficBuilt 1903; rehabilitated 1992
MBTA - Beaver Brook Bridge [Map] Deck arch bridge over Beaver Dam Brook on MBTA Worcester LineOpen to railway traffic, but passenger underpass closed.Built 1906
MBTA - Concord River Bridge [Map · Street View] Stone arch bridge over Concord River on MBTA Lowell LineOpen to trafficBuilt 1832; extensively modified and encased in concrete 1908; timber trestle added 1931
MBTA - High Line Bridge [Map · Street View] Warren through truss with sub-panels bridge over MBTA Yard Tracks on MBTA Lowell LineOpen to trafficBuilt 1927; rehabilitated 1946 & 1956; scheduled for replacement in 2021
MBTA - Lechmere Viaduct [Map · Street View] Closed-spandrel arch bridge over Charles River, Museum Way, and Charlestown Avenue on MBTA Green LineOpen to trafficBuilt 1910; Rehabilitated in-kind as part of Green Line Extension 2019-2022
MBTA - Park Road Overpass [Map · Street View] Pony/through plate girder bridge over Park Road on MBTA Worcester LineOpen to railway trafficBuilt in 1893 by the Pennsylvania Steel Co.; rebuilt in 1914.
MBTA - Pawtucket Canal Bridge [Map] Warren through truss bridge over Pawtucket Canal on MBTA (Nee Boston & Maine Railroad)Open to trafficBuilt 1928 by the Boston Bridge Works
MBTA - Route 62 Overpass [Map · Street View] Pony/through plate girder bridge over Route 62/Main Street on MBTA Fitchburg LineReplaced by a new bridgeBuilt 1927 by Boston Bridge Works; replaced 2015
MBTA - Shawsheen River Bridge [Map] Stone arch bridge over Shawsheen River on MBTA Lowell LineOpen to trafficBuilt 1835, steel liner arch added 1940, scheduled for rehabilitation
McGrath Highway Bridge [Map · Street View] Through truss bridge over MBTA/BMRR on MA 28 (McGrath Highway) in SomervilleOpen to trafficBuilt 1926 (NBI says 1908); rehabilitated 1983
Memorial Drive Bridge [Map] Girder bridge over Brookline Street on US 3 (Memorial Drive)Open to trafficBuilt 1940; rehabilitated 1982
Morton Street Bridge [Map] Wooden bridge over BMRR on Morton Street in LowellReplaced by a new bridgeBuilt 1929; rehabilitated 1982; replaced 2010
NA&B - Salmon Brook Bridge [Map] Abandoned stone arch bridge over Salmon Brook on Nashua, Acton & Boston RailroadDerelict/abandonedBuilt 1872; RR abandoned 1925
NA&B - Stony Brook Bridge [Map · Street View] Stone arch bridge over Stony Brook on Hiking trail (former Nashua, Acton & Boston Railroad)Open to pedestrians onlyBuilt 1872; RR abandoned 1925; seems to be open as a trail
Nashua River Bridge [Map] Steel stringer bridge over Nashua River on St113 Main StreetOpen to trafficBuilt 1937; rehabilitated 1976
New Boston Street Bridge [Map] Lost Timber stringer bridge over MBTA on New Boston StreetRemoved but not replacedDamaged by fire in 1977
North Bank Bridge [Map] Modern Pratt pony truss bridge over Millers River Basin on Charles River Esplanade NorthOpen to pedestrians
North Bridge [Map] Historic timber stringer bridge over Concord River on Old Groton Road (pedestrian path)Open to pedestriansFirst bridge built ca 1760; site of Battle of Concord 1775; demolished 1788; rebuilt 1875, 1889, 1909, 1956; rehabilitated 2005
Old Danforth Street Bridge [Map] Pratt pony truss bridge on an old alignment of Danforth Street over Sudbury River in Framingham.Open to pedestriansBuilt 1890 by Dean & Westbrook; bypassed 1982
Pawtucket Street Bridge [Map] Deck plate girder bridge with decorative queenpost deck trusses over Pawtucket Canal on Pawtucket StreetClosed to all traffic with demolition and replacement in progressFirst bridge at this location dates to 1796. Current bridge built 1927 & replaced 2019-2021
Pelham Island Road Bridge [Map] Concrete arch bridge over Sudbury River on Pelham Island Road in WaylandOpen to trafficBuilt 1930; bridge appears to have been replaced in 2012
Power Canal Bridge [Map] Stone arch bridge over Power Canal on MA 62 (Main Street) in ConcordOpen to trafficBuilt 1885; rehabilitated 1978
Riverside Park Pedestrian Bridge [Map · Street View] Arched Warren pony truss bridge over Charles River on Pony Truss Trail in Newton.Built ca. 1920; Closed 2003; Dismantled and rehabilitated 2012-13; Reopened 2014; Trail reconstruction completed September 2020
Rourke Bridge (1983) [Map · Street View] Bailey pony truss over Merrimack River on Wood StreetOpen to traffic with a weight limitBuilt 1983 as a temporary bridge but never replaced by permenant structure
Sargent Bridge [Map] Open-spandrel arch bridge over Charles River on Footpath in Natick.
Saugus River Bridge [Map] Concrete arch bridge over Saugus River on I-95 in LynnfieldOpen to trafficBuilt 1940; rehabilitated 1960
School Street Bridge [Map] Steel stringer bridge over Merrimack River on School StreetOpen to trafficBuilt 1917; rehabilitated 1968
Sherman's Bridge [Map] Timber stringer bridge over Sudbury River on Lincoln RoadOpen to trafficBuilt 1992
Spot Pond Brook Bridge [Map] Stone arch bridge over Spot Pond Brook on Virginia Wood Trail in Stoneham.Open to pedestrians only
ST - Nashua River Bridge [Map] Abandoned pratt through truss bridge over Nashua River on B&M Greenville BranchDerelict/abandonedBuilt 1883
Stone's Bridge [Map · Street View] Stone arch bridge over Sudbury River on Old Stonebridge Road (formerly) in WaylandIntact but closed to all trafficBuilt in 1858; truncated in 1955 after Hurricane Diane
Stoney Brook Bridge [Map] Stone arch bridge over Stoney Brook on MA 30 (Pleasant Street) in FraminghamOpen to trafficBuilt 1895
Sycamore Street Bridge [Map] Lost pony truss bridge over MBTA/BMRR on Sycamore Street in SomervilleReplaced by a new bridgeBuilt 1902; rehabilitated 1957; replaced 2006
Town Farm Lane Bridge [Map] Wooden bridge over MBTA/BMRR on Town Farm Lane in BillericaOpen to trafficBuilt 1925; rehabilitated 1984
Tyngsborough Bridge [Map · Street View] Steel through arch bridge over Merrimack River on MA 113/MA 3A in TyngsboroughOpen to trafficBuilt 1931 by the Boston Bridge Works; rehabilitated 1975 and 2012
Tyngsborough Bridge (Old) [Map] Lost Whipple deck truss bridge over Merrimack River on Frost RoadReplaced by a new bridgeBuilt 1893; replaced 1930
University Avenue Bridge [Map · Street View] Lost deck truss bridge over Merrimack River on University Avenue in LowellDemolished and replaced.Built 1895 by Groton Bridge Co.; Rehabilitated 1965; Demolished 2014
VFW Highway Beaver Brook Bridge [Map] Deck plate girder bridge over Beaver Brook on VFW Highway (Merrimack River Parkway)Closed to all traffic with replacement in progress. Temporary bridge in placeBuilt 1949; demolished and replaced 2019-2020
Wellington Bridge [Map] Steel stringer (and former bascule) bridge over Mystic River on Fellsway (Massachusetts Route 28)Open to trafficBuilt 1935; rehabilitated 1979
Western Canal Bridge [Map] Lost Steel stringer bridge over Western Canal on Moody StreetReplaced by a new bridgeBuilt 1913; reconstructed 1996
Westvale Bridge [Map] Lost Closed-spandrel arch bridge over Assabet River on Main StreetReplaced by a new bridgeBuilt 1901; Replaced 1978
Woods Memorial Bridge [Map] Bascule bridge over Malden River on MA 16 in EverettReplaced by a new bridgeBuilt 1954; rehabilitated 1973