US 491 Ml over Monument Creek
FairDolores County, Colorado · 0.3 MI NW of JCT SH 141 M · Structure no. M-01-B
- Built
- 1958
- 67 years old
- Condition
- Fair
- inspected February 2025
- Type
- Culvert
- Steel
- Length
- 29 ft
- 2 main spans
- Daily traffic
- 3,200
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
US 491 Ml over Monument Creek is a steel culvert carrying US 491 Ml over Monument Creek in Dolores County, Colorado. It was built in 1958, so it is 67 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 3,200 vehicles a day, roughly 22% of them trucks, projected to reach 3,936 by 2040. The structure is 29 ft (8.8 m) long and 138 ft wide. If it were closed, the detour would be 8.1 mi (13 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 491 Ml over Monument Creek built?
It was built in 1958, making it 67 years old in 2025.
What condition is US 491 Ml over Monument Creek 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 Monument Creek carry?
About 3,200 vehicles per day (2020 count), of which roughly 22% are trucks.
How long is US 491 Ml over Monument Creek?
The structure is 29 ft (8.8 m) long with a longest span of 13 ft (4 m) and a deck 138 ft wide.
Who owns US 491 Ml over Monument Creek?
It is owned by the State Highway Agency.