Highway NM203 over Sumner Dam Spillway
De Baca County, New Mexico · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Highway NM203 over Sumner Dam Spillway in De Baca County, New Mexico, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1936, making it 89 years old at the 2025 inventory.
- It carries about 50 vehicles a day (traffic count year 2006).
- It is one of 20 of the 24 inventoried bridges in De Baca County rated fair (83.3%); 1 (4.2%) are rated poor.
- Its traffic status in the 2025 inventory is posted for load (NBI item 41).
- Its condition class and component ratings are unchanged from the 2024 inventory.
- Its most recent inspection on record is dated November 2023, 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 → (34.60739, -104.3898)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 5 | 5 | Fair condition |
| Superstructure | 5 | 5 | Fair condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Concrete tee beam |
| Length | about 153 ft |
| Location | 12 miles NW of Ft Sumner |
| NBI structure number | 0401-FS1 |
| Condition class | Fair |
| Traffic status (item 41) | Posted for load |
| Last inspection (item 90) | November 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 De Baca County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| US-60 over Unnamed Waterway | 1934 | 5,219 | Fair |
| US-60 over Unnamed Waterway | 1933 | 4,657 | Fair |
| US-60 over Unnamed Waterway | 1933 | 4,657 | Fair |
| US-60 over Long Canyon | 1969 | 4,103 | Fair |
| US-60 over Unnamed Waterway | 1969 | 4,103 | Fair |
| US-60 over Unnamed Waterway | 1969 | 4,103 | Fair |
All bridges nearby: De Baca County, NM bridge conditions · every bridge in De Baca County · New Mexico bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.