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Poston Rd over I 10

La Paz County, Arizona · rated Fair in the 2025 National Bridge Inventory

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

Poston Rd over I 10 in La Paz County, Arizona, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 5 (fair condition) on the 0-9 scale.
It was built in 1977, making it 48 years old at the 2025 inventory.
It carries about 6,923 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 104 of the 306 inventoried bridges in La Paz County rated fair (34.0%); 10 (3.3%) 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	Continuous steel stringer or multi-beam girder
Length	about 198 ft
Location	0.6 M E CA ST Line
NBI structure number	01704
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I 10 EB and WB over Colorado River	1960	60,000	Good
SR 95 over Silver Creek	1978	32,600	Fair
I 10; EB & WB over Wash	1949	27,198	Good
I 10; EB & WB over Wash	1949	27,198	Fair
I 10; EB & WB over Italian Wash	1953	25,941	Good
I 10; WB over Wash	1969	25,941	Good