IRR BIA RTE 4178 over Irrigation Canal
GoodSan Juan County, New Mexico · 2KM East of Nm RTE 371 · Structure no. 0000N48796B0822
- Built
- 1992
- 33 years old
- Condition
- Good
- inspected April 2023
- Type
- Culvert
- Concrete Continuous
- Length
- 27 ft
- 3 main spans
- Daily traffic
- 1,000
- 2023 count
- Owner
- Federal
- Bureau of Indian Affairs
About this bridge
IRR BIA RTE 4178 over Irrigation Canal is a concrete continuous culvert carrying IRR BIA RTE 4178 over Irrigation Canal in San Juan County, New Mexico. It was built in 1992, so it is 33 years old, younger than the New Mexico average of 51.5 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 1,000 vehicles a day, roughly 10% of them trucks, projected to reach 1,200 by 2043. The structure is 27 ft (8.3 m) long and 42 ft wide. If it were closed, the detour would be 24.9 mi (40 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 | 8 Very Good | No problems noted. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR BIA RTE 4178 over Irrigation Canal built?
It was built in 1992, making it 33 years old in 2025.
What condition is IRR BIA RTE 4178 over Irrigation Canal 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 April 2023.
How much traffic does IRR BIA RTE 4178 over Irrigation Canal carry?
About 1,000 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is IRR BIA RTE 4178 over Irrigation Canal?
The structure is 27 ft (8.3 m) long with a longest span of 9 ft (2.6 m) and a deck 42 ft wide.
Who owns IRR BIA RTE 4178 over Irrigation Canal?
It is owned by the Bureau of Indian Affairs.