51-a001 over Flood Control Ditch
Sierra County, New Mexico · rated Good in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- 51-a001 over Flood Control Ditch in Sierra 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 2003, making it 22 years old at the 2025 inventory.
- It carries about 70 vehicles a day (traffic count year 2023).
- Its listed owner is a city or municipal highway agency.
- It is one of 34 of the 112 inventoried bridges in Sierra County rated good (30.4%); 5 (4.5%) 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 May 2023, on a 24-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 → (33.12674, -107.26889)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Culvert | 7 | 7 | Good condition |
Bridge details
| Structure | Concrete culvert |
| Length | about 36 ft |
| Location | 1.8 Mi. East on Broad Ave |
| NBI structure number | 000000000009472 |
| Condition class | Good |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | May 2023 |
| 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 Sierra County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-25 Nbl over Palomas Creek | 1968 | 8,962 | Fair |
| I-25 Sbl over Palomas Creek | 1968 | 8,962 | Fair |
| I-25 Nbl/sbl over Canada Honda | 1968 | 8,962 | Fair |
| I-25 Nbl/sbl over County Rd-b079 | 1968 | 8,962 | Fair |
| I-25 NB over Nm-181 | 1967 | 8,510 | Fair |
| I-25 Nbl over Percha Creek | 1965 | 8,008 | Fair |
All bridges nearby: Sierra County, NM bridge conditions · every bridge in Sierra County · New Mexico bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.