County Road 31 over Hell Creek
Kit Carson County, Colorado · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- County Road 31 over Hell Creek in Kit Carson County, Colorado, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1991, making it 34 years old at the 2025 inventory.
- It carries about 403 vehicles a day (traffic count year 2022).
- Its listed owner is the county highway agency.
- It is one of 88 of the 130 inventoried bridges in Kit Carson County rated fair (67.7%); 2 (1.5%) 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 December 2023, on a 48-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 → (39.52027, -102.59264)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Steel stringer or multi-beam girder |
| Length | about 82 ft |
| Location | 0.9 Miles South of Road M |
| NBI structure number | KITC-31-2.90A02 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | December 2023 |
| 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 Kit Carson County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I 70 Ml over Draw | 1967 | 9,900 | Fair |
| I 70 Ml over Draw | 1969 | 9,900 | Fair |
| I 70 Ml over Draw | 1966 | 9,200 | Fair |
| I 70 Ml over Draw | 1964 | 9,000 | Fair |
| I 70 Ml over Drain Ditch | 1968 | 8,000 | Fair |
| I 70 Ml Ebnd over Republican River | 1975 | 5,000 | Fair |
All bridges nearby: Kit Carson County, CO bridge conditions · every bridge in Kit Carson County · Colorado bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.