Union County Bridge Report Card
Union County scores 69 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Union County, Oregon
Union County has 169 bridges in the National Bridge Inventory, with 8 rated poor and 27 rated scour-critical. Its poor-condition share of 4.7% is at or below the 5.1% statewide average. Poor-condition bridges carry about 7,736 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Union County a Bridge Condition Exposure Score of 69/100 (D). The county has 169 bridges in the National Bridge Inventory, including 8 in poor condition and 27 rated scour-critical. Poor-condition bridges carry about 7,736 daily vehicle crossings. Poor condition does not mean unsafe; bridges judged unsafe are closed or restricted by transportation agencies.
How the Score Breaks Down
| Factor | Weight | County Value | Penalty |
|---|---|---|---|
| Poor-condition bridge share | 40 | 4.7% | 9.5 |
| Poor-condition traffic exposure | 25 | 2.5% of measured traffic | 1.9 |
| Scour-critical bridge share | 20 | 16.0% | 20.0 |
| Average age vs national baseline | 10 | 45 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 311,625 measured daily crossings | 0.0 |
Score = 100 minus weighted penalties. The score is a comparative research signal, not an official safety rating. Read the full methodology.
County Comparisons
| County Poor-Condition Share | 4.7% |
| State Poor-Condition Share | 5.1% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 16.0% |
| Average Bridge Age | 45 years |
| Poor-Condition Traffic Exposure | 7,736 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Union County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Valley View Road over Gordon Creek | Poor condition + traffic exposure | Poor | 437 | 2006 |
| Courtney Lane over Willow Creek EB | Poor condition + traffic exposure | Poor | 286 | 1965 |
| Courtney Lane over Willow Creek EB | Poor condition + traffic exposure | Poor | 286 | 1966 |
| Philberg Road over Indian Creek | Poor condition + traffic exposure | Poor | 27 | 1922 |
| 2nd ST over Union Pacific Rail Road | Poor condition + traffic exposure | Poor | 5,933 | 1979 |
| Woodruff Lane over Catherine Creek | Poor condition + traffic exposure | Poor | 372 | 1930 |
| Old Highway 30 over Uprr | Poor condition + traffic exposure | Poor | 222 | 1922 |
| Yarrington Road over Grande Ronde River | Poor condition + traffic exposure | Poor | 173 | 1925 |
| Or 82 (hwy 010) over Gr Ronde R (island City) | Scour-critical foundation rating | Good | 5,223 | 1976 |
| Spruce Street over Grande Ronde River | Scour-critical foundation rating | Fair | 3,803 | 1965 |
Important safety note
Poor condition does not mean a bridge is unsafe. It means at least one major component has significant deterioration and the bridge is a priority for maintenance, repair, or replacement. Bridges judged unsafe are closed or restricted by transportation agencies.