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Irr Bia Rte N8070 over Chinle Wash

Apache County, Arizona · rated Good in the 2025 National Bridge Inventory

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

Irr Bia Rte N8070 over Chinle Wash in Apache County, Arizona, 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 1978, making it 47 years old at the 2025 inventory.
It carries about 527 vehicles a day (traffic count year 2022).
It is one of 126 of the 258 inventoried bridges in Apache County rated good (48.8%); 16 (6.2%) 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 602 ft
Location	West Edge of Rock Point
NBI structure number	00000000000N252
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Irr I 40; EB over Black Creek	1967	25,552	Fair
Irr I 40; EB & WB over Wash	1964	25,270	Good
Irr I 40; EB & WB over Cedar Point Wash	1949	25,270	Good
Irr I 40; EB & WB over Wash	1963	22,521	Good
Irr I 40; EB & WB over Wash	1966	22,224	Fair
Irr I 40; EB & WB over Wash	1962	22,224	Good