Irr# SH 151 Ml over Piedra River
FairArchuleta County, Colorado · 2.8 Miles NE of Arboles · Structure no. P-07-D
- Built
- 1961
- 64 years old
- Condition
- Fair
- inspected October 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 364 ft
- 5 main spans
- Daily traffic
- 880
- 2020 count
- Owner
- State
- State Highway Agency
About this bridge
Irr# SH 151 Ml over Piedra River is a steel continuous stringer/multi-beam or girder carrying Irr# SH 151 Ml over Piedra River in Archuleta County, Colorado. It was built in 1961, so it is 64 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 880 vehicles a day, roughly 14% of them trucks, projected to reach 1,232 by 2040. The structure is 364 ft (110.8 m) long and 32 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 |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Irr# SH 151 Ml over Piedra River built?
It was built in 1961, making it 64 years old in 2025.
What condition is Irr# SH 151 Ml over Piedra 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 October 2023.
How much traffic does Irr# SH 151 Ml over Piedra River carry?
About 880 vehicles per day (2020 count), of which roughly 14% are trucks.
How long is Irr# SH 151 Ml over Piedra River?
The structure is 364 ft (110.8 m) long with a longest span of 77 ft (23.5 m) and a deck 32 ft wide.
Who owns Irr# SH 151 Ml over Piedra River?
It is owned by the State Highway Agency.