Checked
Washington 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
- 8,519
- Good condition
- 51%
- 4,342
- Poor condition
- 5.6%
- 473
- Weight-limited or closed
- 837
Bridges by county
| County | Bridges | Good | Poor | Weight-limited | Avg. year built |
|---|---|---|---|---|---|
| Adams County | 187 | 34.8% | 12.3% (23) | 14 | 1961 |
| Asotin County | 28 | 50% | 0% (0) | 1 | 1975 |
| Benton County | 167 | 56.9% | 6.6% (11) | 15 | 1977 |
| Chelan County | 148 | 54.1% | 8.1% (12) | 14 | 1974 |
| Clallam County | 153 | 54.2% | 5.2% (8) | 8 | 1980 |
| Clark County | 219 | 53.9% | 4.6% (10) | 21 | 1979 |
| Columbia County | 86 | 44.2% | 10.5% (9) | 12 | 1979 |
| Cowlitz County | 161 | 46.6% | 3.7% (6) | 16 | 1975 |
| Douglas County | 40 | 40% | 12.5% (5) | 8 | 1965 |
| Ferry County | 55 | 41.8% | 10.9% (6) | 7 | 1974 |
| Franklin County | 133 | 55.6% | 3% (4) | 41 | 1970 |
| Garfield County | 54 | 50% | 7.4% (4) | 8 | 1969 |
| Grant County | 304 | 64.1% | 3% (9) | 53 | 1973 |
| Grays Harbor County | 371 | 50.7% | 8.4% (31) | 21 | 1979 |
| Island County | 7 | 28.6% | 0% (0) | 0 | 1978 |
| Jefferson County | 97 | 59.8% | 5.2% (5) | 5 | 1982 |
| King County | 1,252 | 47.5% | 4% (50) | 57 | 1978 |
| Kitsap County | 120 | 72.5% | 0.8% (1) | 6 | 1990 |
| Kittitas County | 313 | 42.5% | 11.2% (35) | 24 | 1974 |
| Klickitat County | 91 | 27.5% | 6.6% (6) | 7 | 1976 |
| Lewis County | 420 | 49.8% | 4% (17) | 20 | 1970 |
| Lincoln County | 180 | 56.7% | 6.1% (11) | 28 | 1965 |
| Mason County | 136 | 56.6% | 2.9% (4) | 3 | 1976 |
| Okanogan County | 161 | 46.6% | 7.5% (12) | 10 | 1972 |
| Pacific County | 120 | 56.7% | 7.5% (9) | 15 | 1974 |
| Pend Oreille County | 71 | 53.5% | 15.5% (11) | 6 | 1981 |
| Pierce County | 480 | 55.6% | 4.6% (22) | 36 | 1975 |
| San Juan County | 13 | 30.8% | 0% (0) | 2 | 1979 |
| Skagit County | 256 | 39.5% | 2.3% (6) | 19 | 1972 |
| Skamania County | 120 | 45.8% | 9.2% (11) | 12 | 1974 |
| Snohomish County | 500 | 49.6% | 4% (20) | 30 | 1980 |
| Spokane County | 309 | 50.5% | 6.8% (21) | 22 | 1978 |
| Stevens County | 75 | 40% | 12% (9) | 12 | 1973 |
| Thurston County | 199 | 59.3% | 1% (2) | 7 | 1979 |
| Wahkiakum County | 37 | 54.1% | 2.7% (1) | 2 | 1970 |
| Walla Walla County | 195 | 62.1% | 9.2% (18) | 31 | 1980 |
| Whatcom County | 355 | 44.2% | 5.6% (20) | 44 | 1970 |
| Whitman County | 349 | 52.1% | 3.7% (13) | 59 | 1974 |
| Yakima County | 557 | 58% | 5.6% (31) | 122 | 1973 |
Frequently asked questions
- How many bridges in Washington are in poor condition?
- In the 2025 National Bridge Inventory, 473 of 8,519 highway bridges in Washington were rated poor (5.6% of rated bridges).
- Which Washington counties have the most bridges in poor condition?
- Among counties with at least 30 bridges, the highest shares rated poor are Pend Oreille County (15.5%), Douglas County (12.5%), Adams County (12.3%), Stevens County (12%), Kittitas County (11.2%).
Source: Federal Highway Administration, National Bridge Inventory · 2025 data