US 491 Ml over Cross Canyon
FairDolores County, Colorado · 5.3 MI NW of Cahone · Structure no. N-01-B
- Built
- 1937
- 88 years old, rebuilt 1958
- Condition
- Fair
- inspected February 2025
- Type
- Culvert
- Concrete
- Length
- 44 ft
- 3 main spans
- Daily traffic
- 3,400
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
US 491 Ml over Cross Canyon is a concrete culvert carrying US 491 Ml over Cross Canyon in Dolores County, Colorado. It was built in 1937 and reconstructed in 1958, so it is 88 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 3,400 vehicles a day, roughly 22% of them trucks, projected to reach 4,352 by 2040. The structure is 44 ft (13.4 m) long and 97 ft wide. If it were closed, the detour would be 6.8 mi (11 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 491 Ml over Cross Canyon built?
It was built in 1937, making it 88 years old in 2025. It was reconstructed in 1958.
What condition is US 491 Ml over Cross Canyon 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 491 Ml over Cross Canyon carry?
About 3,400 vehicles per day (2020 count), of which roughly 22% are trucks.
How long is US 491 Ml over Cross Canyon?
The structure is 44 ft (13.4 m) long with a longest span of 14 ft (4.3 m) and a deck 97 ft wide.
Who owns US 491 Ml over Cross Canyon?
It is owned by the State Highway Agency.