Gravel road over Low Flow Canal
Socorro County, New Mexico · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Gravel road over Low Flow Canal in Socorro County, New Mexico, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
- It was built in 1987, making it 38 years old at the 2025 inventory.
- It carries about 20 vehicles a day (traffic count year 2008).
- It is one of 143 of the 189 inventoried bridges in Socorro County rated fair (75.7%); 13 (6.9%) are rated poor.
- Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated November 2024, on a 24-month routine inspection cycle.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (33.69824, -106.97659)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 6 | 6 | Satisfactory condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 7 | 7 | Good condition |
Bridge details
| Structure | Prestressed concrete stringer or multi-beam girder |
| Length | about 82 ft |
| Location | San Marcial NM |
| NBI structure number | 0401-San Mar |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | November 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | 8: foundations stable, scour above the top of the footing |
Source: FHWA National Bridge Inventory, 2025 data as reported by the New Mexico department of transportation.
Busiest bridges in Socorro County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-25 Sbl over Nogal Arroyo | 1958 | 12,698 | Fair |
| I-25 Nbl over Nogal Arroyo | 1958 | 12,698 | Fair |
| I-25 Nbl/sbl over East Road(escondida) | 1958 | 12,698 | Fair |
| I-25 Nbl/sbl Fr Rd over Unnamed Waterway | 1931 | 12,116 | Fair |
| I-25 Nbl/sbl Fr Rd over Unnamed Waterway | 1931 | 12,116 | Fair |
| I-25 Nbl/sbl Fr Rd over Unnamed Waterway | 1931 | 12,116 | Fair |
All bridges nearby: Socorro County, NM bridge conditions · every bridge in Socorro County · New Mexico bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.