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US-84 over Unnamed Waterway

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

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

US-84 over Unnamed Waterway in San Miguel County, New Mexico, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the culvert, rated 7 (good condition) on the 0-9 scale.
It was built in 1940 and reconstructed in 1969, making it 85 years old at the 2025 inventory.
It carries about 2,467 vehicles a day (traffic count year 2023).
Its listed owner is the state highway agency.
It is one of 68 of the 175 inventoried bridges in San Miguel County rated good (38.9%); 14 (8.0%) are rated poor.
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.

Component ratings

Component	Rating (2025)	FHWA scale meaning
Culvert	7	Good condition

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