US 285 Ml over Conejos River
FairConejos County, Colorado · 2.5 MI N of Antonito · Structure no. P-12-B
- Built
- 1929
- 96 years old, rebuilt 1961
- Condition
- Fair
- inspected February 2025
- Type
- Tee Beam
- Concrete
- Length
- 163 ft
- 2 main spans
- Daily traffic
- 3,200
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
US 285 Ml over Conejos River is a concrete tee beam carrying US 285 Ml over Conejos River in Conejos County, Colorado. It was built in 1929 and reconstructed in 1961, so it is 96 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 5 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 3,200 vehicles a day, roughly 8% of them trucks, projected to reach 3,232 by 2040. The structure is 163 ft (49.7 m) long and 33 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 285 Ml over Conejos River built?
It was built in 1929, making it 96 years old in 2025. It was reconstructed in 1961.
What condition is US 285 Ml over Conejos 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 February 2025.
How much traffic does US 285 Ml over Conejos River carry?
About 3,200 vehicles per day (2020 count), of which roughly 8% are trucks.
How long is US 285 Ml over Conejos River?
The structure is 163 ft (49.7 m) long with a longest span of 50 ft (15.1 m) and a deck 33 ft wide.
Who owns US 285 Ml over Conejos River?
It is owned by the State Highway Agency.