La Paz County Bridge Report Card
La Paz County scores 85 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
La Paz County, Arizona
La Paz County has 306 bridges in the National Bridge Inventory, with 10 rated poor and 2 rated scour-critical. Its poor-condition share of 3.3% is above the 1.1% statewide average. Poor-condition bridges carry about 6,289 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives La Paz County a Bridge Condition Exposure Score of 85/100 (B). The county has 306 bridges in the National Bridge Inventory, including 10 in poor condition and 2 rated scour-critical. Poor-condition bridges carry about 6,289 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 | 3.3% | 6.5 |
| Poor-condition traffic exposure | 25 | 0.3% of measured traffic | 0.2 |
| Scour-critical bridge share | 20 | 0.7% | 1.3 |
| Average age vs national baseline | 10 | 64 years vs 48 nationally | 6.6 |
| Traffic-data completeness | 5 | 2,319,122 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 | 3.3% |
| State Poor-Condition Share | 1.1% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 0.7% |
| Average Bridge Age | 64 years |
| Poor-Condition Traffic Exposure | 6,289 vehicles/day |
Bridges to Watch
Top Bridges to Watch in La Paz County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| IRR BIA RTE 1 over Main Drain | Poor condition + traffic exposure | Poor | 3,000 | 1962 |
| US 60 over Centennial Wash | Poor condition + traffic exposure | Poor | 2,097 | 1934 |
| IRR BIA RTE 30 over Main Drain | Poor condition + traffic exposure | Poor | 280 | 1963 |
| IRR BIA RTE 30 over Lateral Canal No 90 | Poor condition + traffic exposure | Poor | 280 | 1969 |
| IRR BIA RTE 34 over Main Drain | Poor condition + traffic exposure | Poor | 270 | 1963 |
| IRR BIA RTE 56 over Main Drain | Poor condition + traffic exposure | Poor | 165 | 1968 |
| IRR BIA RTE 44 over Main Drain | Poor condition + traffic exposure | Poor | 130 | 1963 |
| IRR BIA RTE 38 over Usbr Main Drain | Poor condition + traffic exposure | Poor | 30 | 1953 |
| IRR BIA RTE 21 over Lateral No 90 | Poor condition + traffic exposure | Poor | 27 | 1969 |
| IRR BIA RTE 60 over Main Drain | Poor condition + traffic exposure | Poor | 10 | 1955 |
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.