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 |
|---|---|---|---|---|---|
| SOUTH STREET | New Hampshire | 1959 | 46,612 | 16.8 m | |
| STARK WAY | New Hampshire | 1956 | 46,106 | 9.1 m | |
| NHRR CONSTITUTION AV. | New Hampshire | 1958 | 45,555 | 47.5 m | |
| PENNICHUCK BROOK | New Hampshire | 1954 | 44,365 | 27.4 m | |
| FORT EDDY RD | New Hampshire | 1980 | 40,527 | 21.3 m | |
| BLACK BROOK | New Hampshire | 1956 | 24,101 | 22.6 m | |
| MERRIMACK RIVER | New Hampshire | 1966 | 23,721 | 160.0 m | |
| COCHECO RIVER | New Hampshire | 1957 | 23,607 | 81.4 m | |
| COCHECO RIVER | New Hampshire | 1957 | 22,560 | 81.4 m | |
| I-93 | New Hampshire | 1958 | 22,391 | 50.9 m | |
| CONNECTICUT RIVER NECRR | New Hampshire | 1966 | 22,288 | 258.2 m | |
| NH108 CSX(ABD) | New Hampshire | 1957 | 22,163 | 62.8 m | |
| BLACK BROOK | New Hampshire | 1956 | 22,005 | 22.6 m | |
| NH108 CSX(ABD) | New Hampshire | 1957 | 21,323 | 91.4 m | |
| CONNECTICUT RIVER NECRR | New Hampshire | 1966 | 21,268 | 257.9 m | |
| TURKEY POND | New Hampshire | 1959 | 20,703 | 73.2 m | |
| TURKEY POND | New Hampshire | 1959 | 20,387 | 73.2 m | |
| WINNICUT RIVER | New Hampshire | 1959 | 17,736 | 19.8 m | |
| CSX | New Hampshire | 1935 | 15,436 | 12.8 m | |
| ISINGLASS RIVER | New Hampshire | 1951 | 14,407 | 36.3 m | |
| CSX(ABD) | New Hampshire | 1936 | 14,314 | 36.6 m | |
| NH155A | New Hampshire | 1968 | 13,387 | 25.3 m | |
| MERRIMACK R CSX RD RAMP | New Hampshire | 1970 | 13,150 | 311.8 m | |
| BABOOSIC BROOK | New Hampshire | 1933 | 13,024 | 9.1 m | |
| MASCOMA RIVER | New Hampshire | 1977 | 12,803 | 27.1 m | |
| SOUHEGAN RIVER | New Hampshire | 1931 | 12,799 | 34.1 m | |
| OTTER BROOK | New Hampshire | 1933 | 11,538 | 25.0 m | |
| MERRYMEETING RIVER | New Hampshire | 1934 | 10,346 | 10.7 m | |
| HAMPTON RIVER | New Hampshire | 1949 | 9,402 | 365.5 m | |
| NHRR | New Hampshire | 1949 | 9,117 | 44.2 m | |
| S BRANCH ASHUELOT RIVER | New Hampshire | 1941 | 8,976 | 11.0 m | |
| CSX | New Hampshire | 1890 | 8,749 | 19.8 m | |
| CONNECTICUT RIVER | New Hampshire | 1920 | 8,535 | 90.5 m | |
| CONNECTICUT RIVER | New Hampshire | 1920 | 8,535 | 103.3 m | |
| NHRR(ABD) | New Hampshire | 1957 | 8,066 | 21.6 m | |
| MILL BROOK | New Hampshire | 1941 | 6,478 | 6.5 m | |
| FEE TPK | New Hampshire | 1954 | 6,359 | 50.9 m | |
| PEMIGEWASSET RIVER | New Hampshire | 1933 | 6,210 | 26.8 m | |
| SALMON FALLS RIVER | New Hampshire | 1950 | 6,132 | 149.0 m | |
| BEAVER BROOK | New Hampshire | 1900 | 6,111 | 14.0 m | |
| NORTH MILL POND | New Hampshire | 1940 | 5,829 | 7.6 m | |
| CONTOOCOOK RIVER | New Hampshire | 1942 | 5,773 | 53.6 m | |
| NEWFOUND RIVER | New Hampshire | 1924 | 5,690 | 18.3 m | |
| NHRR(ABD) | New Hampshire | 1969 | 5,317 | 8.5 m | |
| POOR FARM BROOK | New Hampshire | 1966 | 5,227 | 9.1 m | |
| SPICKET RIVER | New Hampshire | 1900 | 4,883 | 8.8 m | |
| PEA BROOK | New Hampshire | 1932 | 4,334 | 8.5 m | |
| NORTH RIVER | New Hampshire | 1925 | 3,719 | 7.0 m | |
| BLACK BROOK | New Hampshire | 1961 | 3,502 | 7.0 m | |
| STONY BROOK | New Hampshire | 1929 | 3,496 | 7.0 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.