Bridge conditions in Yamhill County, Oregon
150 inventoried bridges · 13 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
13 of the 150 bridges the federal inventory lists in Yamhill County are rated poor; the rest split 34 good and 103 fair.
- 13 of the 150 bridges in Yamhill County, Oregon, are rated in poor condition (8.7%) in the 2025 National Bridge Inventory, as of .
- 34 bridges (22.7%) are rated good and 103 (68.7%) fair.
- The median Yamhill County bridge was built in 1967.
- The busiest poor-rated bridge is Hwy 29 over Yamhill Creek (built 1958), carrying about 5,429 vehicles a day.
Good 22.7% · Fair 68.7% · Poor 8.7% of 150 bridges
Bridges rated poor
Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Hwy 29 over Yamhill Creek | 1958 | 5,429 | Poor |
| Hendricks Road over Hawn Creek | 1964 | 3,288 | Poor |
| Webfoot Road over W. Fk. Palmer Creek | 1959 | 566 | Poor |
| Old Moores Valley over Haskins Creek | 1967 | 284 | Poor |
| Berry Creek Road over Berry Creek | 1966 | 264 | Poor |
| Grand Island Loop over Mosquito Creek | 1961 | 219 | Poor |
| Loganberry Lane over Small Stream | 1969 | 219 | Poor |
| Patty Lane over Ash Swale | 1958 | 129 | Poor |
| Allen Rd over Small Stream | 1952 | 99 | Poor |
| Gopher Valley Rd over Deer Creek | 1968 | 64 | Poor |
| Blackwell Park Rd over Willamina Creek | 1965 | 31 | Poor |
| Grand Island Loop over Small Stream | 1967 | 18 | Poor |
| Bayley Road over Chehalem Creek | 1958 | 6 | Poor |
Busiest bridges in the county
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| OR 18 (Hwy 39) over Yamhill River Overflow | 1963 | 24,417 | Fair |
| Or 99W (hwy 91) over Cozine Creek | 1957 | 23,824 | Fair |
| Or 99W (hwy 91) over Chehalem Creek | 1975 | 22,646 | Fair |
| OR 18 (Hwy 39) over Yamhill River | 1957 | 22,538 | Fair |
| Fletcher Road over OR 18 (Hwy 39) | 1957 | 22,538 | Fair |
| OR 18 (Hwy 39) over OR 221 (Hwy 150) | 1957 | 22,538 | Fair |
| Hwy 140 (or 219) over Hess Creek | 1958 | 20,200 | Fair |
| OR 18 (Hwy 39) over Deer Creek | 1941 | 16,492 | Fair |
| OR 18 (Hwy 39) over Muddy Creek | 1978 | 16,258 | Fair |
| OR 18 (Hwy 39) over Hwy 157 EB | 1959 | 16,061 | Fair |
Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
All of Oregon: Oregon bridge conditions by county · every download on the data page.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.