Nfsr 104.D over Homestake Tunnel Outlet
Lake County, Colorado · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Nfsr 104.D over Homestake Tunnel Outlet in Lake County, Colorado, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1984, making it 41 years old at the 2025 inventory.
- It carries about 41 vehicles a day (traffic count year 2003).
- It is one of 6 of the 17 inventoried bridges in Lake County rated fair (35.3%); 2 (11.8%) are rated poor.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (39.28126, -106.4413)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 6 | Satisfactory condition |
| Superstructure | 6 | Satisfactory condition |
| Substructure | 6 | Satisfactory condition |
Bridge details
| Structure | Concrete slab |
| Length | about 26 ft |
| Location | May Queen Cg |
| NBI structure number | 021201000001002 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Colorado department of transportation.
Busiest bridges in Lake County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 24 Ml over California Gulch | 2013 | 4,600 | Good |
| US 24 Ml over Lake Creek | 1993 | 4,200 | Good |
| US 24 Ml over UP RR | 1995 | 4,200 | Good |
| US 24 Ml over Arkansas River | 1995 | 4,200 | Fair |
| US 24 Ml over Draw | 1937 | 4,000 | Fair |
| US 24 Ml over East Fork Arkansas River | 2008 | 2,700 | Good |
All bridges nearby: Lake County, CO bridge conditions · every bridge in Lake County · Colorado bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.