NM-309 over Rio Grande
FairValencia County, New Mexico · 2.5 MI E of Main St/Belen · Structure no. 000000000008683
- Built
- 1987
- 38 years old
- Condition
- Fair
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 603 ft
- 8 main spans
- Daily traffic
- 14,859
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
NM-309 over Rio Grande is a prestressed concrete continuous stringer/multi-beam or girder carrying NM-309 over Rio Grande in Valencia County, New Mexico. It was built in 1987, so it is 38 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 5 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 14,859 vehicles a day, roughly 5% of them trucks, projected to reach 20,208 by 2043. The structure is 603 ft (183.8 m) long and 73 ft wide. If it were closed, the detour would be 19.9 mi (32 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 NM-309 over Rio Grande built?
It was built in 1987, making it 38 years old in 2025.
What condition is NM-309 over Rio Grande 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 2024.
How much traffic does NM-309 over Rio Grande carry?
About 14,859 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is NM-309 over Rio Grande?
The structure is 603 ft (183.8 m) long with a longest span of 75 ft (22.9 m) and a deck 73 ft wide.
Who owns NM-309 over Rio Grande?
It is owned by the State Highway Agency.