Irr# US 491 Ml over Chimney Rock Draw
FairMontezuma County, Colorado · 5.6 MI N of New Mexico · Structure no. P-02-E
- Built
- 1957
- 68 years old
- Condition
- Fair
- inspected February 2025
- Type
- Culvert
- Steel
- Length
- 40 ft
- 3 main spans
- Daily traffic
- 4,000
- 2018 count
- Owner
- State
- State Highway Agency
About this bridge
Irr# US 491 Ml over Chimney Rock Draw is a steel culvert carrying Irr# US 491 Ml over Chimney Rock Draw in Montezuma County, Colorado. It was built in 1957, 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 4,000 vehicles a day, roughly 15% of them trucks, projected to reach 4,680 by 2038. The structure is 40 ft (12.3 m) long and 72 ft wide. If it were closed, the detour would be 62.1 mi (100 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Culvert | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Irr# US 491 Ml over Chimney Rock Draw built?
It was built in 1957, making it 68 years old in 2025.
What condition is Irr# US 491 Ml over Chimney Rock Draw 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 Irr# US 491 Ml over Chimney Rock Draw carry?
About 4,000 vehicles per day (2018 count), of which roughly 15% are trucks.
How long is Irr# US 491 Ml over Chimney Rock Draw?
The structure is 40 ft (12.3 m) long with a longest span of 10 ft (3 m) and a deck 72 ft wide.
Who owns Irr# US 491 Ml over Chimney Rock Draw?
It is owned by the State Highway Agency.