I 80W over Downtown Interchange
Humboldt County, Nevada · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I 80W over Downtown Interchange in Humboldt County, Nevada, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 7 (good condition) on the 0-9 scale.
- It was built in 1977, making it 48 years old at the 2025 inventory.
- It carries about 4,100 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 19 of the 54 inventoried bridges in Humboldt County rated good (35.2%); 1 (1.9%) 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 → (40.98071, -117.72796)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 8 | Very good condition |
| Superstructure | 7 | Good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Continuous prestressed concrete single box beam |
| Length | about 312 ft |
| Location | Winnemucca |
| NBI structure number | I 871W |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Nevada department of transportation.
Busiest bridges in Humboldt County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| SR 787 Hansen St over Sprr | 1967 | 12,000 | Fair |
| Cross Road over I 80 | 1970 | 9,000 | Fair |
| US 95 over I 80 | 1976 | 7,050 | Good |
| US 95 over Humboldt Rvr | 1986 | 6,550 | Fair |
| US 95 over UPRR | 1999 | 6,550 | Fair |
| I 80 over McNITCH RD | 1970 | 5,200 | Fair |
All bridges nearby: Humboldt County, NV bridge conditions · every bridge in Humboldt County · Nevada bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.