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I-25 Sbl over Frontage Rd/FR2135

San Miguel County, New Mexico · rated Fair in the 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled August 20, 2026

I-25 Sbl over Frontage Rd/FR2135 in San Miguel County, New Mexico, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1966 and reconstructed in 1990, making it 59 years old at the 2025 inventory.
It carries about 8,817 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 93 of the 175 inventoried bridges in San Miguel County rated fair (53.1%); 14 (8.0%) are rated poor.
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.

Component ratings

Source: FHWA National Bridge Inventory, 2025 data as reported by the New Mexico department of transportation.

Bridge	Built	Vehicles/day	Condition
Mills AVE. (LV) over Gallinas River	1998	14,679	Good
I-25 Nbl over Agua Sarca Creek	1973	12,084	Fair
I-25 Sbl over Agua Sarca Creek	1973	12,084	Fair
I-25 Nbl/sbl/frntg over Unnamed Waterway	1966	12,084	Fair
I-25 Nbl/sbl over Unnamed Waterway	1973	12,084	Good
I-25 Nbl over I-25 Service Road	1966	10,978	Fair