8TH Avenue over BNSF RR | Navajo St | Os
Denver County, Colorado · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- 8TH Avenue over BNSF RR | Navajo St | Os in Denver County, Colorado, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1985, making it 40 years old at the 2025 inventory.
- It carries about 6,057 vehicles a day (traffic count year 2021).
- Its listed owner is a city or municipal highway agency.
- It is one of 260 of the 457 inventoried bridges in Denver County rated fair (56.9%); 9 (2.0%) 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 → (39.72934, -105.01079)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 6 | Satisfactory condition |
| Superstructure | 5 | Fair condition |
| Substructure | 6 | Satisfactory condition |
Bridge details
| Structure | Continuous steel single box beam |
| Length | about 2,370 ft |
| Location | Mariposa to Vallejo |
| NBI structure number | D-03-V-150A |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Colorado department of transportation.
Busiest bridges in Denver County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 25 Ml over RTD Pedestrian Underpass | 2003 | 261,000 | Fair |
| I 25 Ml over RR Spur | 1949 | 242,000 | Fair |
| I 25 Ml over Fox Street | 1949 | 242,000 | Good |
| I 25 Ml over Storm Drainage | 1993 | 242,000 | Fair |
| I 25 Ml over W. Myrtle Pl. / RR | 1956 | 235,000 | Fair |
| I 25 Ml over 13TH Ave | 1956 | 235,000 | Fair |
All bridges nearby: Denver County, CO bridge conditions · every bridge in Denver County · Colorado bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.