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Irr Bia Rte N471 over Tinian Mission Wash

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

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

Irr Bia Rte N471 over Tinian Mission Wash in McKinley 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 superstructure, rated 7 (good condition) on the 0-9 scale.
It was built in 2010, making it 15 years old at the 2025 inventory.
It carries about 218 vehicles a day (traffic count year 2021).
It is one of 109 of the 289 inventoried bridges in McKinley County rated good (37.7%); 23 (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


Structure	Prestressed concrete multiple box beam
Length	about 123 ft
Location	2 Mi. NE Tinian Mission
NBI structure number	00000000000N492
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I-40 Wbl over BNSF R/R Spur	1980	31,569	Fair
I-40 Ebl over BNSF R/R Spur	1980	31,569	Fair
I-40 Ebl over Third Street	1980	31,569	Fair
I-40 WB over Third Street	1980	31,569	Fair
I-40 WB over Second Street	1980	31,569	Fair
I-40 Ebl over Second Street	1980	31,569	Fair