NM-304 over Salas Arroyo
PoorSocorro County, New Mexico · 4.7 MI S of US-60/NM-304 · Structure no. 000000000007481
- Built
- 1974
- 51 years old
- Condition
- Poor
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Steel
- Length
- 125 ft
- 4 main spans
- Daily traffic
- 208
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
NM-304 over Salas Arroyo is a steel stringer/multi-beam or girder carrying NM-304 over Salas Arroyo in Socorro County, New Mexico. It was built in 1974, so it is 51 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
It carries about 208 vehicles a day, roughly 11% of them trucks, projected to reach 282 by 2043. The structure is 125 ft (38.1 m) long and 33 ft wide. If it were closed, the detour would be 14.9 mi (24 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was NM-304 over Salas Arroyo built?
It was built in 1974, making it 51 years old in 2025.
What condition is NM-304 over Salas Arroyo in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in November 2024.
How much traffic does NM-304 over Salas Arroyo carry?
About 208 vehicles per day (2023 count), of which roughly 11% are trucks.
How long is NM-304 over Salas Arroyo?
The structure is 125 ft (38.1 m) long with a longest span of 37 ft (11.3 m) and a deck 33 ft wide.
Who owns NM-304 over Salas Arroyo?
It is owned by the State Highway Agency.