Yuba County Bridge Report Card
Yuba County scores 68 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Yuba County, California
Yuba County has 127 bridges in the National Bridge Inventory, with 9 rated poor and 7 rated scour-critical. Its poor-condition share of 7.1% is above the 4.9% statewide average. Poor-condition bridges carry about 21,610 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Yuba County a Bridge Condition Exposure Score of 68/100 (D). The county has 127 bridges in the National Bridge Inventory, including 9 in poor condition and 7 rated scour-critical. Poor-condition bridges carry about 21,610 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 | 7.1% | 14.2 |
| Poor-condition traffic exposure | 25 | 3.7% of measured traffic | 2.8 |
| Scour-critical bridge share | 20 | 5.5% | 11.0 |
| Average age vs national baseline | 10 | 58 years vs 48 nationally | 3.9 |
| Traffic-data completeness | 5 | 581,673 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 | 7.1% |
| State Poor-Condition Share | 4.9% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 5.5% |
| Average Bridge Age | 58 years |
| Poor-Condition Traffic Exposure | 21,610 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Yuba County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Simpson LN over Yuba River | Poor condition + traffic exposure | Poor | 11,630 | 1957 |
| Doolittle Drive over Hutchinson Creek | Poor condition + traffic exposure | Poor | 3,900 | 1952 |
| Gavin Mandry Drive over Hutchinson Creek | Poor condition + traffic exposure | Poor | 3,400 | 1952 |
| Warren Shingle Roa over Hutchinson Creek | Poor condition + traffic exposure | Poor | 2,000 | 1952 |
| Ellis RD over Simmerly Slough | Poor condition + traffic exposure | Poor | 40 | 1928 |
| Frenchtown RD over Dry Creek | Poor condition + traffic exposure | Poor | 490 | 1927 |
| Timbuctoo Road over Deep Ravine No 2 | Poor condition + traffic exposure | Poor | 50 | 1903 |
| Patrol Road over Reeds Creek Tributary | Poor condition + traffic exposure | Poor | 50 | 1942 |
| Patrol Road over Reeds Creek Tributary | Poor condition + traffic exposure | Poor | 50 | 1942 |
| Forty Mile RD over Dry Creek | Scour-critical foundation rating | Good | 1,630 | 1948 |
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.