NM-304 over San Juan Main Canal
PoorValencia County, New Mexico · 8.4 MI S of JCT NM-47 · Structure no. 000000000005234
- Built
- 1951
- 74 years old
- Condition
- Poor
- inspected March 2024
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 52 ft
- 3 main spans
- Daily traffic
- 2,104
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
NM-304 over San Juan Main Canal is a wood or timber stringer/multi-beam or girder carrying NM-304 over San Juan Main Canal in Valencia County, New Mexico. It was built in 1951, so it is 74 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 2,104 vehicles a day, roughly 11% of them trucks, projected to reach 2,861 by 2043. The structure is 52 ft (15.8 m) long and 33 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 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 | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Superstructure | 4 Poor | Advanced section loss, deterioration, 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 San Juan Main Canal built?
It was built in 1951, making it 74 years old in 2025.
What condition is NM-304 over San Juan Main Canal 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 March 2024.
How much traffic does NM-304 over San Juan Main Canal carry?
About 2,104 vehicles per day (2023 count), of which roughly 11% are trucks.
How long is NM-304 over San Juan Main Canal?
The structure is 52 ft (15.8 m) long with a longest span of 21 ft (6.4 m) and a deck 33 ft wide.
Who owns NM-304 over San Juan Main Canal?
It is owned by the State Highway Agency.