US 6 Ml over South Platte River
FairLogan County, Colorado · 1 MI East of JCT SH 14 · Structure no. B-24-O
- Built
- 1957
- 68 years old, rebuilt 1976
- Condition
- Fair
- inspected July 2023
- Type
- Tee Beam
- Concrete Continuous
- Length
- 359 ft
- 10 main spans
- Daily traffic
- 9,900
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
US 6 Ml over South Platte River is a concrete continuous tee beam carrying US 6 Ml over South Platte River in Logan County, Colorado. It was built in 1957 and reconstructed in 1976, so it is 68 years old, older than the Colorado average of 42.2 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 9,900 vehicles a day, roughly 16% of them trucks, projected to reach 13,761 by 2040. The structure is 359 ft (109.5 m) long and 82 ft wide. If it were closed, the detour would be 19.9 mi (32 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 6 Ml over South Platte River built?
It was built in 1957, making it 68 years old in 2025. It was reconstructed in 1976.
What condition is US 6 Ml over South Platte River in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in July 2023.
How much traffic does US 6 Ml over South Platte River carry?
About 9,900 vehicles per day (2020 count), of which roughly 16% are trucks.
How long is US 6 Ml over South Platte River?
The structure is 359 ft (109.5 m) long with a longest span of 36 ft (10.9 m) and a deck 82 ft wide.
Who owns US 6 Ml over South Platte River?
It is owned by the State Highway Agency.