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Bridge conditions in Valencia County, New Mexico

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

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

The federal inventory lists 48 bridges in Valencia County: 12 rated good, 34 fair, and 2 poor.

2 of the 48 bridges in Valencia County, New Mexico, are rated in poor condition (4.2%) in the 2025 National Bridge Inventory, as of August 20, 2026.
12 bridges (25.0%) are rated good and 34 (70.8%) fair.
The median Valencia County bridge was built in 1970.
The busiest poor-rated bridge is Nm-304 over San Juan Main Canal (built 1951), carrying about 2,104 vehicles a day.

Good 25.0% · Fair 70.8% · Poor 4.2% of 48 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-304 over San Juan Main Canal	1951	2,104	Poor
Nm-109 over Irrigation Canal	1950	1,406	Poor

Busiest bridges in the county

Bridge	Built	Vehicles/day	Condition
I-25 Nbl/sbl over Ranch Road	1971	34,538	Fair
Nm-6 over Belen Highline Canal	1996	27,050	Good
Nm-6 over Rio Grand River	2022	25,000	Good
I-25 Nbl/sbl over Unnamed Waterway	1969	24,409	Good
I-25 Nbl/sbl over Unnamed Waterway	1969	24,409	Good
I-25 Nbl/sbl over Unnamed Waterway	1969	24,409	Fair
I-25 Nbl/sbl over Unnamed Waterway	1970	24,409	Good
I-25 Nbl/sbl over Unnamed Waterway	1969	22,282	Fair
Nm-6 over BNSF Railroad	1977	20,429	Fair
Nm-6 over I-25 Nbl/sbl	1996	19,682	Fair

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.