Ventura County Bridge Report Card
Ventura County scores 88 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Ventura County, California
Ventura County has 501 bridges in the National Bridge Inventory, with 12 rated poor and 6 rated scour-critical. Its poor-condition share of 2.4% is at or below the 4.9% statewide average. Poor-condition bridges carry about 201,988 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Ventura County a Bridge Condition Exposure Score of 88/100 (B). The county has 501 bridges in the National Bridge Inventory, including 12 in poor condition and 6 rated scour-critical. Poor-condition bridges carry about 201,988 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 | 2.4% | 4.8 |
| Poor-condition traffic exposure | 25 | 1.5% of measured traffic | 1.1 |
| Scour-critical bridge share | 20 | 1.2% | 2.4 |
| Average age vs national baseline | 10 | 56 years vs 48 nationally | 3.4 |
| Traffic-data completeness | 5 | 13,699,766 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 | 2.4% |
| State Poor-Condition Share | 4.9% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 1.2% |
| Average Bridge Age | 56 years |
| Poor-Condition Traffic Exposure | 201,988 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Ventura County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| State Route 33 over San Antonio Creek | Poor condition + traffic exposure | Poor | 20,500 | 1936 |
| SR 1 over Big Sycamore Creek | Poor condition + traffic exposure | Poor | 11,600 | 1938 |
| Main ST over Ventura River | Poor condition + traffic exposure | Poor | 6,853 | 1932 |
| Madera Road over Up Rr Amtrak Metrolink | Poor condition + traffic exposure | Poor | 33,000 | 1981 |
| Madera Road over Arroyo Simi | Poor condition + traffic exposure | Poor | 30,000 | 1979 |
| State Route 126 over Pole Creek | Poor condition + traffic exposure | Poor | 30,000 | 1981 |
| State Route 126 over Ellsworth Barranca | Poor condition + traffic exposure | Poor | 25,000 | 1965 |
| 1st Street over Arroyo Simi | Poor condition + traffic exposure | Poor | 22,500 | 1971 |
| Telephone RD over Up Rr & Amtrak | Poor condition + traffic exposure | Poor | 13,495 | 1981 |
| Tierra Rejada Rd. over Arroyo Simi | Poor condition + traffic exposure | Poor | 8,640 | 1990 |
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.