Nm-555 over Dillon Creek
Colfax County, New Mexico · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Nm-555 over Dillon Creek in Colfax County, New Mexico, 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 1985, making it 40 years old at the 2025 inventory.
- It carries about 623 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 54 of the 139 inventoried bridges in Colfax County rated good (38.8%); 5 (3.6%) 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 June 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 → (36.8616, -104.46114)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 7 | 7 | Good condition |
Bridge details
| Structure | Steel culvert |
| Length | about 27 ft |
| Location | 1.3 Mi W of Jct Loop-17 |
| NBI structure number | 000000000008479 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | June 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 New Mexico department of transportation.
Busiest bridges in Colfax County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-25 Nbl over Loop-17 | 1993 | 11,902 | Good |
| I-25 Nbl over Lincoln Avenue (raton) | 1960 | 10,589 | Fair |
| I-25 Sbl over Lincoln Avenue | 1960 | 10,589 | Fair |
| I-25 Sbl over Loop-17 | 1993 | 10,176 | Good |
| I-25 Nbl over US 64/loop-17 | 1959 | 7,719 | Fair |
| I-25 Nbl over Willow Creek | 1970 | 6,576 | Fair |
All bridges nearby: Colfax County, NM bridge conditions · every bridge in Colfax County · New Mexico bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.