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Bridge conditions in Grant County, New Mexico

99 inventoried bridges · 2 rated poor · 2025 National Bridge Inventory

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

The federal inventory lists 99 bridges in Grant County: 20 rated good, 77 fair, and 2 poor.

2 of the 99 bridges in Grant County, New Mexico, are rated in poor condition (2.0%) in the 2025 National Bridge Inventory, as of August 20, 2026.
20 bridges (20.2%) are rated good and 77 (77.8%) fair.
The median Grant County bridge was built in 1960.
The busiest poor-rated bridge is Nm-90 over Pinos Altos Creek (built 1961), carrying about 14,699 vehicles a day.

Good 20.2% · Fair 77.8% · Poor 2.0% of 99 bridges

Bridges rated poor

Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.

Bridge	Built	Vehicles/day	Condition
Nm-90 over Pinos Altos Creek	1961	14,699	Poor
17-3069 over Sapillo Creek	1986	191	Poor

Busiest bridges in the county

Bridge	Built	Vehicles/day	Condition
US-180 over Pinos Altos Creek	1948	21,588	Fair
I-10 Ebl/wbl over Unnamed Waterway	1950	15,578	Fair
I-10 Ebl/wbl over Unnamed Waterway	1957	15,578	Fair
I-10 Ebl/wbl over Local Road	1957	15,373	Fair
I-10 Ebl/wbl over Unnamed Waterway	1950	15,235	Fair
I-10 Wbl/ebl over Unnamed Waterway	1950	15,235	Fair
I-10 Ebl/wbl over Unnamed Waterway	1957	15,235	Fair
I-10 Ebl/wbl over Unnamed Waterway	1958	15,235	Fair
I-10 Ebl/wbl over Unnamed Waterway	1958	15,235	Fair
Nm-90 over Pinos Altos Creek	1961	14,699	Poor

Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.

All of New Mexico: New Mexico bridge conditions by county · every download on the data page.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.