Oregon bridge conditions
8,329 inventoried bridges · 422 rated poor · county by county
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- 422 of Oregon's 8,329 inventoried bridges are rated in poor condition (5.1%) in the 2025 National Bridge Inventory, as of .
- 2,645 bridges (31.8%) are rated good and 5,262 (63.2%) fair.
- The national poor rate is about 6.7%; Oregon is at or below it (see all states ranked).
- The busiest poor-rated bridge in the state is NW Broadway Ramp over Broadway St Conn in Multnomah County, carrying about 30,388 vehicles a day.
By the measure that matters most - the most traffic on a poor rating - it is NW Broadway Ramp over Broadway St Conn in Multnomah County, built 1913, carrying about 30,388 vehicles a day. That is a repair-priority flag, not a collapse warning: what a poor rating does and does not mean. See the worst bridge in every state.
Good 31.8% · Fair 63.2% · Poor 5.1% of 8,329 bridges
Bridge conditions by county
Sorted by the number of poor-rated bridges. Click any county for its full bridge list.
| County | Bridges | Rated poor | Poor % |
|---|---|---|---|
| Linn County | 564 | 95 | 16.8% |
| Marion County | 375 | 29 | 7.7% |
| Benton County | 190 | 20 | 10.5% |
| Douglas County | 703 | 17 | 2.4% |
| Clackamas County | 367 | 17 | 4.6% |
| Wasco County | 148 | 16 | 10.8% |
| Lane County | 1,011 | 16 | 1.6% |
| Lincoln County | 190 | 16 | 8.4% |
| Tillamook County | 228 | 15 | 6.6% |
| Umatilla County | 321 | 14 | 4.4% |
| Yamhill County | 150 | 13 | 8.7% |
| Columbia County | 128 | 12 | 9.4% |
| Polk County | 162 | 12 | 7.4% |
| Multnomah County | 473 | 12 | 2.5% |
| Washington County | 334 | 11 | 3.3% |
| Klamath County | 248 | 11 | 4.4% |
| Wallowa County | 113 | 10 | 8.8% |
| Baker County | 188 | 9 | 4.8% |
| Coos County | 255 | 8 | 3.1% |
| Clatsop County | 155 | 8 | 5.2% |
| Union County | 169 | 8 | 4.7% |
| Jefferson County | 80 | 7 | 8.8% |
| Lake County | 95 | 7 | 7.4% |
| Josephine County | 224 | 6 | 2.7% |
| Curry County | 101 | 6 | 5.9% |
| Grant County | 145 | 6 | 4.1% |
| Jackson County | 401 | 5 | 1.2% |
| Malheur County | 181 | 3 | 1.7% |
| Morrow County | 71 | 3 | 4.2% |
| Crook County | 78 | 2 | 2.6% |
| Harney County | 128 | 2 | 1.6% |
| Hood River County | 82 | 2 | 2.4% |
| Sherman County | 48 | 2 | 4.2% |
| Deschutes County | 156 | 2 | 1.3% |
| Gilliam County | 35 | 0 | 0.0% |
| Wheeler County | 32 | 0 | 0.0% |
The 25 busiest poor-rated bridges in Oregon
Frequently asked questions
How many bridges in Oregon are in poor condition?
422 of Oregon's 8,329 inventoried highway bridges are rated in poor condition (5.1%) in the 2025 National Bridge Inventory. 'Poor' is FHWA's classification for a bridge whose deck, superstructure, or substructure is rated 4 or lower on the 0-9 scale; it was formerly called 'structurally deficient'.
Are the poor-rated bridges in Oregon safe to drive on?
A poor rating flags advanced deterioration that needs repair or close monitoring; it does not by itself mean a bridge is unsafe. Bridges judged unsafe are closed or restricted to lighter loads by the owner. Inspections continue on all open bridges, generally at least every 24 months under the National Bridge Inspection Standards.
Source: FHWA National Bridge Inventory, 2025 vintage, reported by the Oregon DOT.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.