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 |
|---|---|---|---|---|---|
| MILL CREEK | New Hampshire | 1940 | 639 | 12.8 m | |
| BEAVER BROOK | New Hampshire | 1932 | 629 | 9.1 m | |
| I-93 US 4 | New Hampshire | 1958 | 612 | 58.5 m | |
| ROARING BROOK | New Hampshire | 1955 | 607 | 10.4 m | |
| POWWOW RIVER | New Hampshire | 1976 | 586 | 10.1 m | |
| BLOW-ME-DOWN BROOK | New Hampshire | 1954 | 574 | 22.3 m | |
| RIDDLE BROOK | New Hampshire | 2000 | 571 | 7.9 m | |
| LANCY BROOK | New Hampshire | 1987 | 559 | 6.7 m | |
| LAMPREY RIVER | New Hampshire | 1914 | 547 | 15.8 m | |
| NECRR | New Hampshire | 1992 | 534 | 21.9 m | |
| BABOOSIC BROOK | New Hampshire | 1928 | 511 | 7.0 m | |
| NHRR | New Hampshire | 1940 | 510 | 36.9 m | |
| HODGSON BROOK | New Hampshire | 1940 | 480 | 11.0 m | |
| BLACKWATER RIVER | New Hampshire | 1954 | 457 | 22.3 m | |
| MOHAWK RIVER | New Hampshire | 1935 | 451 | 17.1 m | |
| CSX | New Hampshire | 1920 | 438 | 12.5 m | |
| HAM BRANCH | New Hampshire | 1920 | 436 | 15.8 m | |
| BAKER RIVER | New Hampshire | 1928 | 410 | 31.1 m | |
| SOUCOOK RIVER | New Hampshire | 1934 | 372 | 44.5 m | |
| INDIAN RIVER | New Hampshire | 1956 | 365 | 15.5 m | |
| BEAVER BROOK | New Hampshire | 1970 | 356 | 6.1 m | |
| PATTEN BROOK | New Hampshire | 1950 | 289 | 9.1 m | |
| ANDROSCOGGIN RIVER | New Hampshire | 1900 | 281 | 55.5 m | |
| COLD BROOK | New Hampshire | 1922 | 253 | 7.3 m | |
| BROOK | New Hampshire | 1920 | 250 | 7.3 m | |
| MCDOWELL RESERVOIR | New Hampshire | 1950 | 247 | 68.3 m | |
| JACOBS BROOK | New Hampshire | 1930 | 244 | 15.8 m | |
| EXETER RIVER | New Hampshire | 1941 | 234 | 14.3 m | |
| ROARING BROOK | New Hampshire | 1950 | 233 | 13.1 m | |
| MARTINS BROOK | New Hampshire | 1940 | 219 | 8.5 m | |
| MAPLE FALLS BROOK | New Hampshire | 1850 | 208 | 8.8 m | |
| EXETER RIVER | New Hampshire | 1986 | 208 | 8.5 m | |
| POWWOW RIVER | New Hampshire | 1920 | 208 | 9.4 m | |
| PERRY STREAM | New Hampshire | 1860 | 191 | 23.8 m | |
| COLD RIVER | New Hampshire | 1869 | 164 | 29.3 m | |
| BLOW-ME-DOWN-BROOK | New Hampshire | 1950 | 112 | 7.0 m | |
| MAD RIVER | New Hampshire | 1986 | 110 | 10.7 m | |
| MEADOW BROOK | New Hampshire | 1930 | 108 | 7.3 m | |
| GREAT BROOK | New Hampshire | 1936 | 107 | 11.6 m | |
| BURNT KNOLL | New Hampshire | 1975 | 100 | 7.3 m | |
| BLACKWATER RIVER | New Hampshire | 1882 | 96 | 19.8 m | |
| WEST BRANCH BROOK | New Hampshire | 1950 | 96 | 8.2 m | |
| CLAY BROOK | New Hampshire | 1900 | 96 | 6.4 m | |
| SOUTH RIVER | New Hampshire | 1920 | 96 | 11.0 m | |
| PHILLIPS BROOK | New Hampshire | 1940 | 96 | 12.2 m | |
| ASHUELOT RIVER | New Hampshire | 1960 | 96 | 22.6 m | |
| CHICKWOLNEPY STREAM | New Hampshire | 1950 | 96 | 11.8 m | |
| STEARNS BROOK | New Hampshire | 1950 | 96 | 11.9 m | |
| NORTHEAST POND | New Hampshire | 1948 | 96 | 28.7 m | |
| SUGAR RIVER | New Hampshire | 1976 | 96 | 11.9 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.