Poor Condition Bridges in New Hampshire
192 bridges rated Poor condition in New Hampshire. FHWA National Bridge Inventory.
Bridges Rated Poor Condition
A bridge is rated Poor when one or more of its major components (deck, superstructure, or substructure) has a condition rating of 4 or below on the FHWA 0-9 scale. Poor condition does not mean imminent danger of collapse, but indicates significant deterioration requiring priority maintenance or replacement. There are 192 such bridges in New Hampshire.
| Bridge | State | Condition | Year Built | ADT | Length |
|---|---|---|---|---|---|
| LITTLE HARBOR | New Hampshire | 1942 | 3,359 | 77.3 m | |
| EXETER RIVER | New Hampshire | 1978 | 3,259 | 24.1 m | |
| MARTIN BROOK | New Hampshire | 1929 | 2,956 | 8.2 m | |
| SMITH RIVER | New Hampshire | 1940 | 2,913 | 32.3 m | |
| NEWFOUND RIVER | New Hampshire | 1949 | 2,878 | 21.9 m | |
| MAD RIVER | New Hampshire | 1979 | 2,828 | 164.6 m | |
| LOST RIVER | New Hampshire | 1931 | 2,784 | 21.0 m | |
| CONNECTICUT RIVER | New Hampshire | 1866 | 2,722 | 136.9 m | |
| GUNSTOCK RIVER | New Hampshire | 1941 | 2,690 | 7.6 m | |
| NHRR(ABD) | New Hampshire | 1929 | 2,674 | 54.6 m | |
| SUCKER BROOK | New Hampshire | 1929 | 2,674 | 8.5 m | |
| SUCKER BROOK | New Hampshire | 1929 | 2,674 | 8.5 m | |
| BLACKWATER RIVER | New Hampshire | 1933 | 2,652 | 22.9 m | |
| ASH BROOK | New Hampshire | 1970 | 2,610 | 9.1 m | |
| MONADNOCK MILL CANAL | New Hampshire | 1922 | 2,233 | 8.5 m | |
| NHRR(ABD) | New Hampshire | 1930 | 2,191 | 22.6 m | |
| CONNECTICUT RIVER | New Hampshire | 1937 | 2,160 | 143.6 m | |
| SMITH RIVER | New Hampshire | 1929 | 2,087 | 21.3 m | |
| AMMONOOSUC RIVER | New Hampshire | 1960 | 2,087 | 67.7 m | |
| LITTLE COHAS BROOK | New Hampshire | 1974 | 1,964 | 7.3 m | |
| PEMIGEWASSET RIVER | New Hampshire | 1928 | 1,917 | 66.1 m | |
| PISCATAQUOG RIVER | New Hampshire | 1940 | 1,866 | 35.7 m | |
| SOUHEGAN RIVER | New Hampshire | 1938 | 1,866 | 52.7 m | |
| EXETER RIVER | New Hampshire | 1932 | 1,854 | 9.4 m | |
| COCHECO RIVER | New Hampshire | 1953 | 1,773 | 19.5 m | |
| WARNER RIVER | New Hampshire | 1937 | 1,581 | 37.5 m | |
| CONNECTICUT RIVER | New Hampshire | 1934 | 1,508 | 162.5 m | |
| BLACKWATER RIVER | New Hampshire | 1941 | 1,472 | 50.6 m | |
| INDIAN RIVER | New Hampshire | 1948 | 1,436 | 10.7 m | |
| BLACK BROOK | New Hampshire | 1994 | 1,387 | 12.8 m | |
| SUGAR RIVER | New Hampshire | 1974 | 1,376 | 59.1 m | |
| I-89 SB WARNER RIVER | New Hampshire | 1966 | 1,372 | 74.7 m | |
| BOG BROOK | New Hampshire | 1929 | 1,193 | 12.2 m | |
| MINNEWAWA BROOK | New Hampshire | 1939 | 1,191 | 27.4 m | |
| BLOOD BROOK | New Hampshire | 1901 | 1,167 | 14.9 m | |
| AMMONOOSUC RIVER | New Hampshire | 1927 | 1,167 | 37.8 m | |
| PARTRIDGE BROOK | New Hampshire | 1937 | 1,167 | 44.9 m | |
| GRANT BROOK | New Hampshire | 1952 | 1,132 | 12.5 m | |
| HODGSON BROOK | New Hampshire | 1940 | 1,096 | 11.3 m | |
| BLOODS BROOK | New Hampshire | 1952 | 1,089 | 19.8 m | |
| E BR SACO RIVER | New Hampshire | 1928 | 1,078 | 24.4 m | |
| OLIVERIAN BROOK | New Hampshire | 1960 | 1,072 | 16.5 m | |
| SUGAR RIVER | New Hampshire | 1967 | 1,067 | 85.6 m | |
| BAKER POND BROOK | New Hampshire | 1929 | 826 | 7.3 m | |
| BRACKETT BROOK | New Hampshire | 1929 | 826 | 12.2 m | |
| WHITE BROOK | New Hampshire | 1940 | 826 | 7.0 m | |
| COCHECO RIVER | New Hampshire | 1926 | 770 | 11.9 m | |
| CONTOOCOOK RIVER | New Hampshire | 1933 | 712 | 68.3 m | |
| PEMIGEWASSET RIVER | New Hampshire | 1939 | 674 | 55.8 m | |
| INDIAN RIVER | New Hampshire | 1930 | 655 | 16.5 m |
About Poor Condition Bridge Ratings
FHWA rates bridge components on a 0-9 scale. A rating of 4 or below on any major component (deck, superstructure, substructure) classifies the bridge as Poor condition. The bridge remains open to traffic but requires priority attention. Bridges rated 0-2 are immediately closed.