I 80 Ramp 3A over N Truckee Drain Overflow
Washoe County, Nevada · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I 80 Ramp 3A over N Truckee Drain Overflow in Washoe County, Nevada, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1989, making it 36 years old at the 2025 inventory.
- It carries about 2,400 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 163 of the 338 inventoried bridges in Washoe County rated good (48.2%); 7 (2.1%) are rated poor.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (39.52917, -119.71267)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 26 ft |
| Location | Sparks Blvd Interchange |
| NBI structure number | B1862 |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Nevada department of transportation.
Busiest bridges in Washoe County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 580 over Vassar St | 1977 | 170,000 | Good |
| I 580 SB over 2ND St/GLENDALE AVE | 2022 | 170,000 | Good |
| I 580 over SR647 4TH St Sprr | 1971 | 163,000 | Fair |
| I 580 over SR667 & Truckee Rvr | 1971 | 163,000 | Fair |
| I 580 over Rmp I80E to US395N | 1969 | 163,000 | Good |
| I 580 NB over SR648 Glendale Av | 1977 | 163,000 | Good |
All bridges nearby: Washoe County, NV bridge conditions · every bridge in Washoe County · Nevada bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.