NM-104 over Unnamed Waterway
PoorSan Miguel County, New Mexico · 17.1 MI NW of JCT LOOP-36 · Structure no. 000000000005258
- Built
- 1952
- 73 years old
- Condition
- Poor
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 26 ft
- 1 main span
- Daily traffic
- 243
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
NM-104 over Unnamed Waterway is a wood or timber stringer/multi-beam or girder carrying NM-104 over Unnamed Waterway in San Miguel County, New Mexico. It was built in 1952, so it is 73 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 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 243 vehicles a day, roughly 11% of them trucks, projected to reach 330 by 2043. The structure is 26 ft (7.9 m) long and 37 ft wide. If it were closed, the detour would be 62.1 mi (100 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 | 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 | 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 1952, making it 73 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 November 2024.
How much traffic does NM-104 over Unnamed Waterway carry?
About 243 vehicles per day (2023 count), of which roughly 11% are trucks.
How long is NM-104 over Unnamed Waterway?
The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m) and a deck 37 ft wide.
Who owns NM-104 over Unnamed Waterway?
It is owned by the State Highway Agency.