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43-z001 over Chico Arroyo

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

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

43-z001 over Chico Arroyo in Sandoval 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 substructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1983, making it 42 years old at the 2025 inventory.
It carries about 102 vehicles a day (traffic count year 2023).
Its listed owner is the county highway agency.
It is one of 110 of the 180 inventoried bridges in Sandoval County rated fair (61.1%); 8 (4.4%) 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


Structure	Prestressed concrete tee beam
Length	about 122 ft
Location	20.7 MI. S.of US 550
NBI structure number	000000000008567
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
US-550 over Irrigation Ditch	1938	91,260	Good
US-550 Sbl over Rio Grande River	1986	91,260	Fair
US-550 Sbl over Rio Grande	1986	91,260	Fair
I-25 Nbl/sbl over Unnamed Waterway	1954	70,705	Fair
I-25 NBL and SBL over Sandia wash	2011	70,705	Fair
I-25 Nbl/sbl over Unnamed Waterway	1954	59,841	Fair