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IRR:5TH Street over Iliuliuk River

Aleutians West Census Area, Alaska · rated Fair in the 2025 National Bridge Inventory

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

IRR:5TH Street over Iliuliuk River in Aleutians West Census Area, Alaska, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1983, making it 42 years old at the 2025 inventory.
It carries about 2,750 vehicles a day (traffic count year 2020).
Its listed owner is the state highway agency.
It is one of 2 of the 8 inventoried bridges in Aleutians West Census Area rated fair (25.0%); 0 (0.0%) 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	Prestressed concrete tee beam
Length	about 100 ft
Location	Mile Point 0.1
NBI structure number	1407
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Irr:airport Beach over South Channel Unalaska	2008	3,450	Good
Irr:steward Road over Unalaska Creek	2006	2,333	Good
Captains Bay Road over Pyramid Creek	2001	976	Fair
Irr:summer Bay Rd over Summer Bay Creek	2014	400	Good
Irr:kelty Field Rd over Kelty Field	1999	30	Good
Irr:dock Street over Atka Dock Creek	1997	20	Good