Checked
North Dakota Bridge Conditions
Highway bridges longer than 20 feet in the 2025 National Bridge Inventory
Yearly inspection ratings. A poor rating does not mean a bridge is unsafe to use.
- Highway bridges
- 4,250
- Good condition
- 41.9%
- 1,782
- Poor condition
- 11.1%
- 470
- Weight-limited or closed
- 824
Bridges by county
| County | Bridges | Good | Poor | Weight-limited | Avg. year built |
|---|---|---|---|---|---|
| Adams County | 44 | 36.4% | 11.4% (5) | 7 | 1973 |
| Barnes County | 79 | 54.4% | 5.1% (4) | 6 | 1978 |
| Benson County | 40 | 50% | 17.5% (7) | 1 | 1983 |
| Billings County | 60 | 61.7% | 3.3% (2) | 2 | 1979 |
| Bottineau County | 123 | 28.5% | 21.1% (26) | 37 | 1974 |
| Bowman County | 69 | 63.8% | 4.3% (3) | 3 | 1984 |
| Burke County | 29 | 24.1% | 10.3% (3) | 3 | 1972 |
| Burleigh County | 113 | 48.7% | 2.7% (3) | 4 | 1979 |
| Cass County | 369 | 53.7% | 3.3% (12) | 23 | 1989 |
| Cavalier County | 65 | 23.1% | 29.2% (19) | 10 | 1974 |
| Dickey County | 43 | 62.8% | 0% (0) | 0 | 1986 |
| Divide County | 13 | 23.1% | 15.4% (2) | 1 | 1975 |
| Dunn County | 73 | 63% | 1.4% (1) | 5 | 1988 |
| Eddy County | 27 | 59.3% | 11.1% (3) | 1 | 1979 |
| Emmons County | 68 | 64.7% | 2.9% (2) | 9 | 1976 |
| Foster County | 19 | 47.4% | 5.3% (1) | 1 | 1980 |
| Golden Valley County | 34 | 41.2% | 0% (0) | 3 | 1970 |
| Grand Forks County | 337 | 31.2% | 10.7% (36) | 51 | 1977 |
| Grant County | 59 | 39% | 10.2% (6) | 24 | 1970 |
| Griggs County | 22 | 63.6% | 9.1% (2) | 2 | 1974 |
| Hettinger County | 64 | 32.8% | 14.1% (9) | 22 | 1964 |
| Kidder County | 10 | 10% | 0% (0) | 0 | 1962 |
| LaMoure County | 60 | 48.3% | 11.7% (7) | 5 | 1972 |
| Logan County | 13 | 69.2% | 15.4% (2) | 3 | 1978 |
| McHenry County | 112 | 20.5% | 30.4% (34) | 51 | 1961 |
| McIntosh County | 11 | 54.5% | 9.1% (1) | 0 | 1979 |
| McKenzie County | 136 | 64.7% | 0.7% (1) | 7 | 1999 |
| McLean County | 58 | 39.7% | 3.4% (2) | 10 | 1974 |
| Mercer County | 71 | 33.8% | 5.6% (4) | 10 | 1977 |
| Morton County | 269 | 42.8% | 9.7% (26) | 63 | 1973 |
| Mountrail County | 28 | 53.6% | 3.6% (1) | 1 | 1991 |
| Nelson County | 23 | 30.4% | 17.4% (4) | 2 | 1975 |
| Oliver County | 23 | 47.8% | 4.3% (1) | 5 | 1974 |
| Pembina County | 203 | 19.7% | 23.2% (47) | 59 | 1969 |
| Pierce County | 5 | 40% | 20% (1) | 1 | 1956 |
| Ramsey County | 48 | 43.8% | 8.3% (4) | 3 | 1987 |
| Ransom County | 35 | 57.1% | 11.4% (4) | 4 | 1971 |
| Renville County | 24 | 25% | 12.5% (3) | 3 | 1972 |
| Richland County | 196 | 35.7% | 12.2% (24) | 44 | 1971 |
| Rolette County | 18 | 61.1% | 0% (0) | 2 | 1971 |
| Sargent County | 31 | 54.8% | 19.4% (6) | 4 | 1980 |
| Sheridan County | 8 | 87.5% | 0% (0) | 0 | 1974 |
| Sioux County | 22 | 54.5% | 4.5% (1) | 1 | 1970 |
| Slope County | 43 | 83.7% | 0% (0) | 2 | 1989 |
| Stark County | 156 | 39.1% | 5.1% (8) | 16 | 1977 |
| Steele County | 93 | 53.8% | 8.6% (8) | 21 | 1976 |
| Stutsman County | 78 | 41% | 9% (7) | 7 | 1971 |
| Towner County | 57 | 35.1% | 24.6% (14) | 6 | 1978 |
| Traill County | 147 | 31.3% | 17.7% (26) | 55 | 1972 |
| Walsh County | 257 | 26.5% | 21% (54) | 86 | 1969 |
| Ward County | 125 | 46.4% | 6.4% (8) | 10 | 1982 |
| Wells County | 41 | 61% | 7.3% (3) | 3 | 1980 |
| Williams County | 99 | 37.4% | 23.2% (23) | 15 | 1974 |
Frequently asked questions
- How many bridges in North Dakota are in poor condition?
- In the 2025 National Bridge Inventory, 470 of 4,250 highway bridges in North Dakota were rated poor (11.1% of rated bridges).
- Which North Dakota counties have the most bridges in poor condition?
- Among counties with at least 30 bridges, the highest shares rated poor are McHenry County (30.4%), Cavalier County (29.2%), Towner County (24.6%), Pembina County (23.2%), Williams County (23.2%).
Source: Federal Highway Administration, National Bridge Inventory · 2025 data