IRR BIA RTE N4030 over Drainage Ditch
FairSan Juan County, New Mexico · 13 MI S 7 MI E Farmington · Structure no. 00000000000N807
- Built
- 1975
- 50 years old
- Condition
- Fair
- inspected March 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 77 ft
- 1 main span
- Daily traffic
- 263
- 2023 count
- Owner
- Federal
- Bureau of Indian Affairs
About this bridge
IRR BIA RTE N4030 over Drainage Ditch is a prestressed concrete stringer/multi-beam or girder carrying IRR BIA RTE N4030 over Drainage Ditch in San Juan County, New Mexico. It was built in 1975, so it is 50 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 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 263 vehicles a day, roughly 10% of them trucks, projected to reach 308 by 2043. The structure is 77 ft (23.5 m) long and 31 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 7 Good | Some minor problems. |
| 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 BIA RTE N4030 over Drainage Ditch built?
It was built in 1975, making it 50 years old in 2025.
What condition is IRR BIA RTE N4030 over Drainage 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 March 2023.
How much traffic does IRR BIA RTE N4030 over Drainage Ditch carry?
About 263 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is IRR BIA RTE N4030 over Drainage Ditch?
The structure is 77 ft (23.5 m) long with a longest span of 74 ft (22.5 m) and a deck 31 ft wide.
Who owns IRR BIA RTE N4030 over Drainage Ditch?
It is owned by the Bureau of Indian Affairs.