I 25 Ml Nbnd over Flood Drainage
Larimer County, Colorado · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- I 25 Ml Nbnd over Flood Drainage in Larimer County, Colorado, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1950, making it 75 years old at the 2025 inventory.
- It carries about 19,000 vehicles a day (traffic count year 2020).
- Its listed owner is the state highway agency.
- It is one of 275 of the 562 inventoried bridges in Larimer County rated good (48.9%); 12 (2.1%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated May 2023, 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 → (40.61073, -105.00106)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 20 ft |
| Location | 2 Mi N of Jct SH 14 |
| NBI structure number | B-16-FA |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | May 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Colorado department of transportation.
Busiest bridges in Larimer County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I25 Ml Nbnd over Poudre River Floodplain | 2022 | 90,000 | Good |
| I25 Ml Sbnd over Poudre River Floodplain | 2023 | 90,000 | Good |
| I 25 Ml over Hillsboro Tributary | 2020 | 86,000 | Good |
| I 25 Ml Nbnd over County Road 16 | 2022 | 86,000 | Good |
| I 25 Ml Sbnd over County Road 16 | 2023 | 86,000 | Good |
| SH 402 Ml over I25 Ml | 2020 | 86,000 | Good |
All bridges nearby: Larimer County, CO bridge conditions · every bridge in Larimer County · Colorado bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.