US-56 over Unnamed Waterway
Union County, New Mexico · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- US-56 over Unnamed Waterway in Union County, New Mexico, is rated in good condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
- It was built in 1938, making it 87 years old at the 2025 inventory.
- It carries about 460 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 37 of the 68 inventoried bridges in Union County rated good (54.4%); 1 (1.5%) 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 January 2023, on a 48-month routine inspection cycle.
- A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.
View this bridge on a map → (36.30481, -103.96409)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 91 ft |
| Location | 16.5 M E of Jct Nm-39 |
| NBI structure number | 000000000002355 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | January 2023 |
| Inspection interval (item 91) | 48 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 Union County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US-87 over Unnamed Waterway | 1961 | 6,226 | Good |
| US-87 over Unnamed Waterway | 1961 | 6,226 | Good |
| US-64 over Unnamed Waterway | 1937 | 5,229 | Good |
| US-64 over Unnamed Waterway | 1937 | 5,229 | Good |
| US-64 over Unnamed Waterway | 1937 | 5,229 | Fair |
| US-64/87 Ebl/wbl over Unnamed Waterway | 1959 | 4,234 | Good |
All bridges nearby: Union County, NM bridge conditions · every bridge in Union County · New Mexico bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.