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Lone Pine Dam Road over Lone Pine Fld Cntrol Dam

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

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

Lone Pine Dam Road over Lone Pine Fld Cntrol Dam in Navajo 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 2011, making it 14 years old at the 2025 inventory.
It carries about 900 vehicles a day (traffic count year 2020).
Its listed owner is the county highway agency.
It is one of 148 of the 278 inventoried bridges in Navajo County rated good (53.2%); 6 (2.2%) 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	Continuous prestressed concrete stringer or multi-beam girder
Length	about 445 ft
Location	2.1 mi W Jct SR 77
NBI structure number	10809
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I 40 Nfr & Sfr over Wash	1974	24,335	Good
I 40; EB & WB over Wash	1954	24,068	Good
I 40; EB & WB over Wash	1962	23,968	Good
I 40; EB & WB over Wash	1962	23,968	Good
I 40; EB & WB over Wash	1965	23,968	Good
I 40; EB & WB over Wash	1965	23,968	Good