Oldest Bridges in New Hampshire

The oldest bridge in New Hampshire is the West Bath Road over Ammonoosuc R Nhrr(abd) in Grafton County, built in 1832.

Age, drawn to scale

The 10 oldest in New Hampshire, one timeline

1850190019502000today

1West Bath Road over Ammonoosuc R Nhrr(abd)NH · 1832 · 96/day 2Main Street over Ashuelot RiverNH · 1832 · 2.2k/day 3Coombs Bridge RD over Ashuelot RiverNH · 1837 · 618/day 4New Market Road over Warner RiverNH · 1840 · 428/day 5Corbin Bridge Road over Croydon Branch Sugar RNH · 1845 · 545/day 6Porter Road over Wild Ammonoosuc RiverNH · 1849 · 529/day 7W Hopkinton Road over Contoocook RiverNH · 1853 · 558/day 8Joppa Road West over Warner RiverNH · 1853 · 100/day 9Bradford Center RD over W Br Warner RiverNH · 1854 · 96/day 10Passaconaway Road over Swift RiverNH · 1858 · 292/day For scale: the Brooklyn BridgeNY · 1883 · 111k/day

Each bar runs from the year the bridge was built to today, colored by its overall condition (green good, orange fair, red poor). A white notch marks a recorded reconstruction; many of these bridges have been rebuilt or widened more than once, and the inventory keeps only the most recent date. Daily traffic is the latest count.

When the bridges were built

every bridge in New Hampshire by the decade it was built

Before 1900pre12%

1900s'0023%

1910s'105%

140

1920s'2021%

278

1930s'3013%

151

1940s'4018%

283

1950s'5014%

378

1960s'604%

300

1970s'705%

232

1980s'803%

199

1990s'902%

207

2000s'000%

219

2010s'100%

2020s'200%

bridges builtshare rated poor

goodfairpoor

Bars are stacked by today's condition rating. 2,546 bridges are counted. Build years before 1900 are counted only when credible. 30 of the 39 bridges in the 1900s bar are recorded as built in exactly 1900, which is likely an estimate rather than a date.

The Oldest Bridges in New Hampshire

Bridge	County	Built	Rebuilt	Material	Daily Traffic	Condition
West Bath Road over Ammonoosuc R Nhrr(abd)	Grafton	1832	2014	Wood or Timber	96	Fair
Main Street over Ashuelot River	Cheshire	1832	1993	Wood or Timber	2,191	Fair
Coombs Bridge RD over Ashuelot River	Cheshire	1837	1997	Wood or Timber	618	Fair
New Market Road over Warner River	Merrimack	1840	1970	Wood or Timber	428	Fair
Corbin Bridge Road over Croydon Branch Sugar R	Sullivan	1845	1994	Wood or Timber	545	Fair
Porter Road over Wild Ammonoosuc River	Grafton	1849	1999	Wood or Timber	529	Fair
W Hopkinton Road over Contoocook River	Merrimack	1853	1996	Wood or Timber	558	Fair
Joppa Road West over Warner River	Merrimack	1853	1963	Wood or Timber	100	Fair
Bradford Center RD over W Br Warner River	Merrimack	1854	2021	Wood or Timber	96	Good
Passaconaway Road over Swift River	Carroll	1858	1970	Wood or Timber	292	Good
Brooklyn Bridge over I278 Fdr Drive Fdr Dri		1883	2016		110,939	Poor
Mechanic Street over Israel River	Coos	1862	2006	Wood or Timber	750	Fair
Westport Road over Ashuelot River	Cheshire	1862	2001	Wood or Timber	792	Fair
Surry RD over Ashuelot River	Cheshire	1863	1951	Masonry	1,167	Fair
Gunn Mountain Road over Ashuelot River	Cheshire	1864	1999	Wood or Timber	821	Good
Cornish Toll Br RD over Connecticut River	Sullivan	1866	1989	Wood or Timber	2,722	Poor
Blair Road over Pemigewasset River	Grafton	1869	2014	Wood or Timber	1,584	Fair
Durgin Bridge Road over Cold River	Carroll	1869	1960	Wood or Timber	164	Poor
Carlton Road over South Brook	Cheshire	1869	1997	Wood or Timber	500	Fair
Nh 16a over Ellis River	Carroll	1876	2004	Wood or Timber	2,280	Fair
Bumps Intervale over Beebe River	Grafton	1877	1972	Wood or Timber	96	Fair
Squag City Road over Blow-me-down Brook	Sullivan	1877	2002	Wood or Timber	19	Fair
Colby Hill Road over Bloods Brook	Sullivan	1880	1963	Steel	137	Fair
Bridge Road over Blackwater River	Merrimack	1882		Wood or Timber	96	Poor
Root Hill Road over Mill Brook	Sullivan	1883		Wood or Timber	92	Fair
Nh202a over Cocheco River	Strafford	1883	2012	Masonry	14,115	Fair
River Road over Clay Brook	Grafton	1885	1970	Wood or Timber	154	Fair
Flume Bus Route over Pemigewasset River	Grafton	1886		Steel	50	Fair
East Side Road over Saco River	Carroll	1890	1989	Wood or Timber	2,490	Fair
Oak Street over Csx	Strafford	1890	1928	Steel	8,749	Poor
Allds Street over Salmon Brook	Hillsborough	1892		Masonry	9,118	Fair
Nh149 over Contoocook River	Hillsborough	1893	1940	Concrete	4,507	Fair
Bog Road over Connecticut River	Coos	1893	2005	Steel	303	Fair
Nh 3a So Main ST over Piscataquog River	Hillsborough	1894	2003	Masonry	12,740	Good
River Road over Clay Brook	Grafton	1900	1960	Concrete Continuous	96	Poor
Nh 11 over Connecticut River	Sullivan	1900	2016	Steel	6,519	Fair
Thrasher Road over Red Water Brook	Sullivan	1900	2008	Concrete	505	Good
Us302 Nh 16 over Artist Falls Brook	Carroll	1900	1964	Concrete	13,702	Good
Tunnel Brook Road over Wild Ammonoosuc River	Grafton	1900	1959	Steel	52	Poor
Stinson Lake Road over Sucker Brook	Grafton	1900	1993	Concrete	258	Good
Stinson Lake Road over Brown Brook	Grafton	1900	1994	Steel	258	Good
Park Street over Csx	Rockingham	1900	2004	Steel	782	Fair
Nh 75 over Mad River	Strafford	1900	1992	Steel	871	Fair
Belknap Mt Road over Gunstock River	Belknap	1900	1992	Concrete	886	Good
North Shore Road over Georges Brook	Grafton	1900	1995	Concrete	1,167	Good
Gleason Falls Road over Beards Brook	Hillsborough	1900		Masonry	96	Poor
Beard Road over Beards Brook	Hillsborough	1900		Masonry	96	Fair
Second Nh Tpk over Brook	Hillsborough	1900	2001	Masonry	721	Fair
Second Nh Tpk over Brook	Hillsborough	1900	2001	Masonry	721	Good
Jones Road over Beards Brook	Hillsborough	1900		Masonry	96	Poor
Nh127 over Tail Race	Merrimack	1900		Concrete	3,434	Fair
Granite Street over Recreation Trail	Hillsborough	1900	1973	Steel	603	Fair
Cohas Avenue over Cohas Brook	Hillsborough	1900		Masonry	2,560	Good
Main Street over Beaver Brook	Hillsborough	1900	1929	Masonry	6,111	Poor
Nh 28 (s Broadway) over Spicket River	Rockingham	1900	1986	Concrete	20,229	Fair
Bridge Street over Spicket River	Rockingham	1900	1959	Steel	4,883	Poor
Brook Road over Salmon Brook	Belknap	1900	2012	Concrete	96	Poor
Tilton Bridge Road over Salmon Brook	Belknap	1900	2012	Concrete	96	Good
Bearcamp Pond Road over Bearcamp River	Carroll	1900	1953	Steel	96	Good
North Road over Androscoggin River	Coos	1900	1959	Steel	281	Poor
Lower Main Street over Sugar River	Sullivan	1900	2016	Wood or Timber	557	Good
Mountain Road over Cold Brook	Carroll	1900	2024	Steel	41	Fair
Broad Brook Road over Broad Brook	Cheshire	1900	2014	Prestressed Concrete	96	Good
Nh109 over Smith River	Carroll	1900	1995	Prestressed Concrete	7,358	Good
Great Hollow Road over Mink Brook	Grafton	1901		Masonry	2,168	Fair
Temple Road over Blood Brook	Hillsborough	1901		Masonry	1,167	Poor
Nh132 over Squam River	Grafton	1905	1995	Prestressed Concrete	3,488	Fair
Valley Cross Road over Wildcat Brook	Carroll	1905	1983	Steel	151	Fair
Nutting Road over Contoocook River	Cheshire	1905		Masonry	96	Fair
Nutting Road over Contoocook River	Cheshire	1905	2024	Masonry	1,804	Good
Nh 31 over Stony Brook	Hillsborough	1905		Masonry	2,883	Fair
Washington Street over Csx	Strafford	1907		Masonry	5,525	Fair
Bridge Street over Suncook River	Merrimack	1909	1996	Concrete	96	Good
Bennett Road over Csx	Strafford	1910	2020	Wood or Timber	657	Fair
Dow Avenue over Gale River	Grafton	1910	1999	Steel	235	Fair
Winn Hill Road over Sugar River	Sullivan	1910	2004	Wood or Timber	96	Fair
Nh123 over Connecticut River	Cheshire	1910	1989	Steel	8,425	Fair
Tannery Lane over Tannery Pond Outlet	Merrimack	1910	1985	Steel	96	Fair
Old Route 3a over Needle Shop Brook	Merrimack	1910		Steel	1	Fair
Mt Orne Road over Connecticut River	Coos	1911	1988	Wood or Timber	642	Fair
Columbia Bridge RD over Connecticut River	Coos	1912	1981	Wood or Timber	180	Fair
Packers Falls Road over Lamprey River	Strafford	1912	2003	Concrete	1,378	Good
Walker Street over Piscataqua R Back Chan	Rockingham	1913	2015	Steel	7,000	Fair
Depot Street over Relief	Hillsborough	1914	2013	Concrete	1,065	Good
Dudley Road over Lamprey River	Rockingham	1914	1972	Concrete	547	Poor
Old Town Road over Ammonoosuc River	Coos	1915	2008	Steel	96	Good
Patterson Hill RD over Contoocook River	Merrimack	1915	2001	Steel	147	Fair
Second Street over Piscataquog (north Br)	Hillsborough	1915	1970	Steel	5,707	Fair
US 3 Elm ST over Csx(abd)	Hillsborough	1915		Steel	11,812	Fair
Owen Road over Bishop Brook	Coos	1915	2023	Steel	96	Fair
Wilton Road over Souhegan River	Hillsborough	1917	1952	Masonry	6,406	Fair
Shedd Road over Shedd Brook	Hillsborough	1919	1936	Concrete	96	Fair
Saw Mill Road over Beards Brook	Hillsborough	1919	1931	Concrete	592	Fair
Yeaton Road over Spencer Brook	Grafton	1919	1981	Steel	313	Fair
Nh123 over Cold River	Cheshire	1919		Steel	2,804	Fair
Griffin Hill Road over Warren Brook	Cheshire	1920	2004	Concrete	96	Good
Eastern Corner RD over Beebe River	Grafton	1920	2011	Steel	96	Fair
Old Deerfield Road over Brook	Rockingham	1920		Masonry	250	Poor
Washburn Road over Mohawk River	Coos	1920	2011	Prestressed Concrete	96	Good
Giles Road over Csx	Rockingham	1920	1992	Wood or Timber	208	Good

Oldest bridges in the United States · Longest bridges in New Hampshire