Irr# County RD 334 over Allison Ditch
FairPosted for loadLa Plata County, Colorado · .5 MI E of CR 523 · Structure no. 67033403.00038
- Built
- 1940
- 85 years old, rebuilt 1973
- Condition
- Fair
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 27 ft
- 1 main span
- Daily traffic
- 138
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Irr# County RD 334 over Allison Ditch is a steel stringer/multi-beam or girder carrying Irr# County RD 334 over Allison Ditch in La Plata County, Colorado. It was built in 1940 and reconstructed in 1973, so it is 85 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. Its operating status is: posted for load restriction.
It carries about 138 vehicles a day, projected to reach 163 by 2042. The structure is 27 ft (8.3 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Substructure | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Channel and channel protection | 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 Irr# County RD 334 over Allison Ditch built?
It was built in 1940, making it 85 years old in 2025. It was reconstructed in 1973.
What condition is Irr# County RD 334 over Allison Ditch 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 2024.
How much traffic does Irr# County RD 334 over Allison Ditch carry?
About 138 vehicles per day (2022 count).
How long is Irr# County RD 334 over Allison Ditch?
The structure is 27 ft (8.3 m) long with a longest span of 23 ft (7 m) and a deck 24 ft wide.
Who owns Irr# County RD 334 over Allison Ditch?
It is owned by the County Highway Agency.