8TH Ave over South Platte River
Denver County, Colorado · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- 8TH Ave over South Platte River in Denver County, Colorado, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2021, making it 4 years old at the 2025 inventory.
- It carries about 20,305 vehicles a day (traffic count year 2013).
- Its listed owner is a city or municipal highway agency.
- It is one of 188 of the 457 inventoried bridges in Denver County rated good (41.1%); 9 (2.0%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its class is unchanged from 2024 (good), but component ratings moved: superstructure 9 to 8, deck 8 to 9.
- Its most recent inspection on record is dated October 2024, on a 24-month routine inspection cycle.
- 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 → (39.7294, -105.01717)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 8 | 9 | Excellent condition |
| Superstructure | 9 | 8 | Very good condition |
| Substructure | 9 | 9 | Excellent condition |
Bridge details
| Structure | Continuous prestressed concrete multiple box beam |
| Length | about 195 ft |
| Location | Just West of Zuni Street |
| NBI structure number | D-02-PR-150A |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | October 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 5: foundations stable, scour within the limits of the footing or piles |
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.