Washoe County Bridge Report Card
Washoe County scores 80 out of 100 on BridgeLookup's Bridge Condition Exposure Score, based on FHWA National Bridge Inventory records.
Washoe County, Nevada
Washoe County has 338 bridges in the National Bridge Inventory, with 7 rated poor and 24 rated scour-critical. Its poor-condition share of 2.1% is above the 1.0% statewide average. Poor-condition bridges carry about 170,305 daily vehicle crossings.
Quote-Ready Local Facts
Copyable Facts for Reporters
BridgeLookup.com gives Washoe County a Bridge Condition Exposure Score of 80/100 (B). The county has 338 bridges in the National Bridge Inventory, including 7 in poor condition and 24 rated scour-critical. Poor-condition bridges carry about 170,305 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 | 2.1% | 4.1 |
| Poor-condition traffic exposure | 25 | 2.0% of measured traffic | 1.5 |
| Scour-critical bridge share | 20 | 7.1% | 14.2 |
| Average age vs national baseline | 10 | 39 years vs 48 nationally | 0.0 |
| Traffic-data completeness | 5 | 8,506,401 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 | 2.1% |
| State Poor-Condition Share | 1.0% |
| National Poor-Condition Share | 6.7% |
| County Scour-Critical Share | 7.1% |
| Average Bridge Age | 39 years |
| Poor-Condition Traffic Exposure | 170,305 vehicles/day |
Bridges to Watch
Top Bridges to Watch in Washoe County
| Bridge | Reason | Condition | Daily Traffic | Year Built |
|---|---|---|---|---|
| Keystone Av over Truckee River | Poor condition + traffic exposure | Poor | 12,800 | 1966 |
| Sierra ST over Truckee Rvr | Poor condition + traffic exposure | Poor | 7,600 | 1937 |
| I 80 over City Streets(nugget) | Poor condition + traffic exposure | Poor | 69,000 | 1966 |
| I 80 over City Streets(nugget) | Poor condition + traffic exposure | Poor | 69,000 | 1966 |
| Arlington Av over Truckee Rvr | Poor condition + traffic exposure | Poor | 10,000 | 1938 |
| Fr Wa09 Canyon Way over Sprr | Poor condition + traffic exposure | Poor | 1,300 | 1962 |
| Evans Creek DR over Evans Crk | Poor condition + traffic exposure | Poor | 605 | 1991 |
| SR 659/mccarran over Uprr & Truckee River | Scour-critical foundation rating | Fair | 27,000 | 1990 |
| SR 659/mccarran over Truckee River | Scour-critical foundation rating | Fair | 22,200 | 1971 |
| I 80 over Truckee River & Sprr | Scour-critical foundation rating | Fair | 18,750 | 1964 |
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.