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Irr Bia Rte N31 over Thodilidonih 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 N31 over Thodilidonih 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 deck, rated 7 (good condition) on the 0-9 scale.
It was built in 2016, making it 9 years old at the 2025 inventory.
It carries about 136 vehicles a day (traffic count year 2023).
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 single box beam
Length	about 241 ft
Location	9 Miles NE of Navajo Nm
NBI structure number	0000N36780B0692
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