Ia-4158 over 6th St. & I-40EB on ramp
Bernalillo County, New Mexico · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- Ia-4158 over 6th St. & I-40EB on ramp in Bernalillo County, New Mexico, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the substructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 2002, making it 23 years old at the 2025 inventory.
- It carries about 8,499 vehicles a day (traffic count year 2023).
- Its listed owner is the state highway agency.
- It is one of 352 of the 496 inventoried bridges in Bernalillo County rated fair (71.0%); 7 (1.4%) 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 July 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 → (35.10627, -106.64994)
Component ratings
| Component | Rating (2024) | Rating (2025) | FHWA scale meaning |
|---|---|---|---|
| Deck | 7 | 7 | Good condition |
| Superstructure | 7 | 7 | Good condition |
| Substructure | 5 | 5 | Fair condition |
Bridge details
| Structure | Continuous steel stringer or multi-beam girder |
| Length | about 421 ft |
| Location | 1.11 Mi W Jct I-25 & I-40 |
| NBI structure number | 000000000009901 |
| Condition class | Fair |
| Traffic status (item 41) | Open, no restriction |
| Last inspection (item 90) | July 2024 |
| Inspection interval (item 91) | 24 months |
| Scour (item 113) | N: not over a waterway |
Source: FHWA National Bridge Inventory, 2025 data as reported by the New Mexico department of transportation.
Busiest bridges in Bernalillo County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| I-40 Ebl over I-25 NB Frontage Road | 2002 | 209,135 | Good |
| I-40 Wbl over I-25 NB Frontage Road | 2002 | 209,135 | Fair |
| I-40 WB over Unnamed Waterway | 1963 | 197,192 | Fair |
| I-25 Nbl over Central Avenue-FL4016 | 1961 | 187,263 | Fair |
| I-25 Sbl over Central Avenue-FL4016 | 1961 | 187,263 | Fair |
| I-25 Sbl over Candelaria Boulavard | 2002 | 182,749 | Fair |
All bridges nearby: Bernalillo County, NM bridge conditions · every bridge in Bernalillo County · New Mexico bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.