I 580S over Northgate Ln
Carson City, Nevada · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I 580S over Northgate Ln in Carson City, Nevada, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
- It was built in 2001, making it 24 years old at the 2025 inventory.
- It carries about 18,750 vehicles a day (traffic count year 2021).
- Its listed owner is the state highway agency.
- It is one of 27 of the 31 inventoried bridges in Carson City rated good (87.1%); 0 (0.0%) 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 → (39.19328, -119.76592)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 7 | Good condition |
| Superstructure | 8 | Very good condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete multiple box beam |
| Length | about 147 ft |
| Location | Carson City |
| NBI structure number | H2298S |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Nevada department of transportation.
Busiest bridges in Carson City
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 580N over Rmp Carson St to 580N | 2006 | 22,000 | Good |
| I 580S over Rmp Carson St to 580N | 2006 | 22,000 | Good |
| US 395 over Kings Canyon Channel | 2009 | 20,750 | Good |
| US 395 over Kings Canyon Channel | 2009 | 20,750 | Good |
| I 580N over US 50 | 2005 | 20,500 | Good |
| I 580S over US 50 | 2005 | 20,500 | Good |
All bridges nearby: Carson City, NV bridge conditions · every bridge in Carson City · Nevada bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.