SH 138 Ml over Drain Ditch
Logan County, Colorado · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- SH 138 Ml over Drain Ditch in Logan County, Colorado, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 8 (very good condition) on the 0-9 scale.
- It was built in 2020, making it 5 years old at the 2025 inventory.
- It carries about 2,500 vehicles a day (traffic count year 2020).
- Its listed owner is the state highway agency.
- It is one of 69 of the 182 inventoried bridges in Logan County rated good (37.9%); 16 (8.8%) are rated poor.
- 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 → (40.70791, -103.14314)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Culvert | 8 | Very good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 20 ft |
| Location | 6.6 MI NE of JCT US 6 |
| NBI structure number | B-24-Q |
| Condition class | Good |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Colorado department of transportation.
Busiest bridges in Logan County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US 6 Ml over City Streets UP RR | 1972 | 9,900 | Fair |
| US 6 Ml over South Platte R Ovflw | 1957 | 9,900 | Fair |
| US 6 Ml over Henderson-smith Ditch | 1965 | 9,900 | Fair |
| US 6 Ml over South Platte River | 1957 | 9,900 | Fair |
| US 6 Ml over South Platte R Ovflw | 1957 | 9,900 | Fair |
| I 76 Ml Wbnd over Twenty Two Slough | 1964 | 5,500 | Fair |
All bridges nearby: Logan County, CO bridge conditions · every bridge in Logan County · Colorado bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.