NM-104 over Unnamed Waterway
PoorPosted for loadSan Miguel County, New Mexico · 2.0 MI E of JCT NM-129 · Structure no. 000000000005995
- Built
- 1959
- 66 years old
- Condition
- Poor
- inspected February 2025
- Type
- Channel Beam
- Concrete
- Length
- 187 ft
- 6 main spans
- Daily traffic
- 151
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
NM-104 over Unnamed Waterway is a concrete channel beam carrying NM-104 over Unnamed Waterway in San Miguel County, New Mexico. It was built in 1959, so it is 66 years old, older 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 3 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. Its operating status is: posted for load restriction.
It carries about 151 vehicles a day, roughly 11% of them trucks, projected to reach 205 by 2043. The structure is 187 ft (57 m) long and 31 ft wide. If it were closed, the detour would be 31.1 mi (50 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was NM-104 over Unnamed Waterway built?
It was built in 1959, making it 66 years old in 2025.
What condition is NM-104 over Unnamed Waterway 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 February 2025.
How much traffic does NM-104 over Unnamed Waterway carry?
About 151 vehicles per day (2023 count), of which roughly 11% are trucks.
How long is NM-104 over Unnamed Waterway?
The structure is 187 ft (57 m) long with a longest span of 31 ft (9.4 m) and a deck 31 ft wide.
Who owns NM-104 over Unnamed Waterway?
It is owned by the State Highway Agency.