SH 12 Ml over Primero Canyon
Las Animas County, Colorado · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SH 12 Ml over Primero Canyon in Las Animas 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 1978, making it 47 years old at the 2025 inventory.
- It carries about 520 vehicles a day (traffic count year 2020).
- Its listed owner is the state highway agency.
- It is one of 50 of the 205 inventoried bridges in Las Animas County rated good (24.4%); 30 (14.6%) 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 September 2022, on a 48-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 → (37.12335, -104.7287)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 47 ft |
| Location | at Segundo |
| NBI structure number | P-18-CC |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | September 2022 |
| Inspection interval (item 91) | 48 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 Las Animas County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| County Road 20.8 over I 25 Ml | 1959 | 16,000 | Fair |
| I 25 Ramp over SB Onramp Frm Comm. St. | 2011 | 16,000 | Good |
| I 25 Nbnd Off Ramp over North Commercial Street | 2010 | 16,000 | Good |
| I 25 Ml over Arroyo | 1951 | 16,000 | Fair |
| I 25 Ml over Draw | 1969 | 12,000 | Fair |
| County Road 18.9 over I 25 Ml | 2022 | 12,000 | Good |
All bridges nearby: Las Animas County, CO bridge conditions · every bridge in Las Animas County · Colorado bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.