County Rd 31.9 over Purgatoire River
Las Animas County, Colorado · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- County Rd 31.9 over Purgatoire River in Las Animas County, Colorado, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1996 and reconstructed in 1998, making it 29 years old at the 2025 inventory.
- It carries about 194 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 125 of the 205 inventoried bridges in Las Animas County rated fair (61.0%); 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 May 2023, on a 24-month routine inspection cycle.
- 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 → (37.13179, -104.84694)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 72 ft |
| Location | 0.2 Mi N of SH 12 |
| NBI structure number | LA31.9-17-10-6A |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | May 2023 |
| 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 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.