List of crossings of the Merrimack River

This is a list of bridges and other crossings of the Merrimack River from its mouth in the Gulf of Maine at Newburyport, Massachusetts, upstream to its source at the merger of two rivers in Franklin, New Hampshire. Some pedestrian bridges and abandoned bridges are also listed.

Crossings
{| class=wikitable ! Crossing ! Carries ! Location ! Built ! Coordinates ! References !colspan=6|

Massachusetts
!colspan=6|
 * Gillis Memorial Bridge
 * rowspan=2|Newburyport and Salisbury
 * 42.81608°N, -70.87341°W
 * Newburyport Railroad Bridge
 * Newburyport Railroad
 * 42.81594°N, -70.87285°W
 * Chain Bridge
 * Spofford Street (south bank to Deer Island)
 * rowspan=3|Newburyport and Amesbury
 * 42.83366°N, -70.90681°W
 * Derek S. Hines Memorial Bridge
 * Spofford Street (north bank to Deer Island)
 * 42.83543°N, -70.90749°W
 * John Greenleaf Whittier Bridge
 * 2019 (Replaces bridge built in 1951)
 * 42.83448°N, -70.91173°W
 * Rocks Village Bridge
 * East Main Street
 * Haverhill and West Newbury
 * 42.81071°N, -70.99991°W
 * Bates Bridge
 * Groveland Street
 * Haverhill and Groveland
 * 42.76386°N, -71.03414°W
 * Basiliere Bridge
 * (Main Street / South Main Street)
 * rowspan=4|Haverhill
 * 42.77373°N, -71.07624°W
 * MBTA Commuter Rail: Haverhill Line
 * 42.77099°N, -71.08621°W
 * Joseph C. Comeau Bridge
 * Railroad Avenue
 * 42.77058°N, -71.08695°W
 * Antonio Franciosa Memorial Bridge
 * 42.75444°N, -71.12732°W
 * O'Reilly Memorial Bridge
 * Lawrence and North Andover
 * 42.70665°N, -71.13855°W
 * Duck Bridge
 * South Union Street
 * rowspan=4|Lawrence
 * 42.70431°N, -71.15337°W
 * Joseph W. Casey Bridge
 * Parker Street
 * 42.70355°N, -71.16037°W
 * E.F. O'Leary Bridge
 * 42.7012°N, -71.16554°W
 * Merrimack-Methuen Bridge
 * Methuen and Andover
 * 42.70051°N, -71.2098°W
 * Hunts Falls Bridge
 * rowspan=6|Lowell
 * 1959
 * 42.64688°N, -71.29927°W
 * John E. Cox Memorial Bridge
 * Bridge Street
 * 1937 (Crossing dates to 1830s )
 * 42.64814°N, -71.30515°W
 * Ouellette Memorial Bridge
 * Aiken Street / Aiken Avenue
 * 1883
 * 42.65473°N, -71.31542°W
 * Richard P. Howe Bridge
 * University Avenue
 * 2013
 * 42.6516°N, -71.32476°W
 * O'Donnell Bridge
 * School Street / Mammoth Rd
 * 2005 (Rebuilt from a bridge built in 1917, crossing dates to 1792 )
 * 42.64954°N, -71.33055°W
 * Rourke Bridge
 * Wood Street
 * 1983
 * 42.63849°N, -71.35675°W
 * The bridge is a "temporary" structure, but it might be replaced by a permanent structure soon.
 * Tyngsborough Bridge
 * rowspan=1|Tyngsborough
 * 1932, Rebuilt 1975
 * 42.67602°N, -71.4212°W
 * Duck Bridge
 * South Union Street
 * rowspan=4|Lawrence
 * 42.70431°N, -71.15337°W
 * Joseph W. Casey Bridge
 * Parker Street
 * 42.70355°N, -71.16037°W
 * E.F. O'Leary Bridge
 * 42.7012°N, -71.16554°W
 * Merrimack-Methuen Bridge
 * Methuen and Andover
 * 42.70051°N, -71.2098°W
 * Hunts Falls Bridge
 * rowspan=6|Lowell
 * 1959
 * 42.64688°N, -71.29927°W
 * John E. Cox Memorial Bridge
 * Bridge Street
 * 1937 (Crossing dates to 1830s )
 * 42.64814°N, -71.30515°W
 * Ouellette Memorial Bridge
 * Aiken Street / Aiken Avenue
 * 1883
 * 42.65473°N, -71.31542°W
 * Richard P. Howe Bridge
 * University Avenue
 * 2013
 * 42.6516°N, -71.32476°W
 * O'Donnell Bridge
 * School Street / Mammoth Rd
 * 2005 (Rebuilt from a bridge built in 1917, crossing dates to 1792 )
 * 42.64954°N, -71.33055°W
 * Rourke Bridge
 * Wood Street
 * 1983
 * 42.63849°N, -71.35675°W
 * The bridge is a "temporary" structure, but it might be replaced by a permanent structure soon.
 * Tyngsborough Bridge
 * rowspan=1|Tyngsborough
 * 1932, Rebuilt 1975
 * 42.67602°N, -71.4212°W
 * 42.65473°N, -71.31542°W
 * Richard P. Howe Bridge
 * University Avenue
 * 2013
 * 42.6516°N, -71.32476°W
 * O'Donnell Bridge
 * School Street / Mammoth Rd
 * 2005 (Rebuilt from a bridge built in 1917, crossing dates to 1792 )
 * 42.64954°N, -71.33055°W
 * Rourke Bridge
 * Wood Street
 * 1983
 * 42.63849°N, -71.35675°W
 * The bridge is a "temporary" structure, but it might be replaced by a permanent structure soon.
 * Tyngsborough Bridge
 * rowspan=1|Tyngsborough
 * 1932, Rebuilt 1975
 * 42.67602°N, -71.4212°W
 * 42.63849°N, -71.35675°W
 * The bridge is a "temporary" structure, but it might be replaced by a permanent structure soon.
 * Tyngsborough Bridge
 * rowspan=1|Tyngsborough
 * 1932, Rebuilt 1975
 * 42.67602°N, -71.4212°W
 * 1932, Rebuilt 1975
 * 42.67602°N, -71.4212°W

New Hampshire

 * Sagamore Bridge
 * Circumferential Highway
 * rowspan=3|Nashua and Hudson
 * 1973 (twinned in 2000)
 * 42.72417°N, -71.43806°W
 * WN&R / B&M RR Bridge
 * 1847
 * 42.75806°N, -71.74056°W
 * WN&R Railroad - Abutments remain
 * Taylor Falls Bridge
 * 1970 (Taylor Falls/eastbound span) & 1973 (Veterans Memorial/westbound span)
 * 42.76333°N, -71.44361°W
 * Pearl Harbor Memorial Bridge
 * Manchester Airport Access Road (Raymond Wieczorek Drive)
 * Bedford and Manchester
 * 2011
 * 42.91333°N, -71.45306°W
 * Queen City Bridge
 * rowspan=4|Manchester
 * 1923
 * 42.97417°N, -71.47194°W
 * Granite Street Bridge
 * 1981
 * 42.98528°N, -71.46972°W
 * Notre Dame Bridge
 * 1988 (twinned in 1990)
 * 42.99417°N, -71.46944°W
 * Amoskeag Memorial Bridge
 * 1970
 * 43.00361°N, -71.46972°W
 * Main Street Bridge
 * Hooksett
 * 1976
 * 43.09556°N, -71.46444°W
 * Korea Veterans Memorial Bridge
 * rowspan=4|Concord
 * 1998
 * 43.19306°N, -71.52389°W
 * World War II Veterans Memorial Bridge
 * 1966
 * 43.20889°N, -71.53056°W
 * Vietnam & Gulf War Veterans Memorial Bridge
 * 1978
 * 43.21944°N, -71.52306°W
 * Sewalls Falls Road Bridge
 * 1915
 * 43.27111°N, -71.56472°W
 * New Hampshire Veterans Memorial Bridge
 * Penacook
 * 2005
 * 43.29°N, -71.58762°W
 * Boscawen-Canterbury Bridge
 * Boscawen and Canterbury
 * 1907
 * 43.31759°N, -71.61806°W
 * Bridge removed in 2014
 * }
 * 43.09556°N, -71.46444°W
 * Korea Veterans Memorial Bridge
 * rowspan=4|Concord
 * 1998
 * 43.19306°N, -71.52389°W
 * World War II Veterans Memorial Bridge
 * 1966
 * 43.20889°N, -71.53056°W
 * Vietnam & Gulf War Veterans Memorial Bridge
 * 1978
 * 43.21944°N, -71.52306°W
 * Sewalls Falls Road Bridge
 * 1915
 * 43.27111°N, -71.56472°W
 * New Hampshire Veterans Memorial Bridge
 * Penacook
 * 2005
 * 43.29°N, -71.58762°W
 * Boscawen-Canterbury Bridge
 * Boscawen and Canterbury
 * 1907
 * 43.31759°N, -71.61806°W
 * Bridge removed in 2014
 * }
 * 43.27111°N, -71.56472°W
 * New Hampshire Veterans Memorial Bridge
 * Penacook
 * 2005
 * 43.29°N, -71.58762°W
 * Boscawen-Canterbury Bridge
 * Boscawen and Canterbury
 * 1907
 * 43.31759°N, -71.61806°W
 * Bridge removed in 2014
 * }
 * Boscawen and Canterbury
 * 1907
 * 43.31759°N, -71.61806°W
 * Bridge removed in 2014
 * }
 * }

River source at confluence of the Pemigewasset and Winnipesaukee rivers in Franklin, New Hampshire at 43.43667°N, -71.64833°W.


 * An italicized entry in the "name" column means that the real name is missing.