County Road 37 over N Fork Frenchman Creek
Phillips County, Colorado · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- County Road 37 over N Fork Frenchman Creek in Phillips County, Colorado, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1967, making it 58 years old at the 2025 inventory.
- It carries about 48 vehicles a day (traffic count year 2023).
- Its listed owner is the county highway agency.
- It is one of 20 of the 26 inventoried bridges in Phillips County rated fair (76.9%); 5 (19.2%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated November 2023, on a 24-month routine inspection cycle.
- It is coded scour critical (NBI item 113 = 3): scour critical: foundations unstable for the assessed or calculated scour.
- 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 → (40.58797, -102.32139)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 82 ft |
| Location | 0.1 Mi. No. of US Hwy 6 |
| NBI structure number | PH37-0.1-S6 |
| Condition class | Fair |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | November 2023 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 3: scour critical: foundations unstable for the assessed or calculated scour |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Colorado department of transportation.
Busiest bridges in Phillips County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 6 Ml over Frenchman Creek | 1935 | 1,900 | Poor |
| US 385 Ml over Frenchman Creek | 1949 | 1,900 | Fair |
| US 6 Ml over N.fk.frenchman Creek | 2004 | 1,900 | Fair |
| US 6 Ml over Frenchman Creek | 1934 | 1,500 | Poor |
| US 6 Ml over Draw | 1934 | 1,500 | Poor |
| US 6 Ml over Draw | 2005 | 1,500 | Fair |
All bridges nearby: Phillips County, CO bridge conditions · every bridge in Phillips County · Colorado bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.