Irr# CO RD 522A over Allison Ditch
GoodLa Plata County, Colorado · N of JCT of 524 & 522 · Structure no. 067052201.5041A
- Built
- 1999
- 26 years old
- Condition
- Good
- inspected October 2024
- Type
- Culvert
- Concrete
- Length
- 20 ft
- 1 main span
- Daily traffic
- 36
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Irr# CO RD 522A over Allison Ditch is a concrete culvert carrying Irr# CO RD 522A over Allison Ditch in La Plata County, Colorado. It was built in 1999, so it is 26 years old, younger than the Colorado average of 42.2 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 36 vehicles a day, projected to reach 42 by 2042. The structure is 20 ft (6.1 m) long and 28 ft wide. If it were closed, the detour would be 98.8 mi (159 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Irr# CO RD 522A over Allison Ditch built?
It was built in 1999, making it 26 years old in 2025.
What condition is Irr# CO RD 522A over Allison Ditch in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.
How much traffic does Irr# CO RD 522A over Allison Ditch carry?
About 36 vehicles per day (2022 count).
How long is Irr# CO RD 522A over Allison Ditch?
The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m) and a deck 28 ft wide.
Who owns Irr# CO RD 522A over Allison Ditch?
It is owned by the County Highway Agency.