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Irr:bethel Highway over Browns Slough

Bethel Census Area, Alaska · rated Good in the 2025 National Bridge Inventory

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

Irr:bethel Highway over Browns Slough in Bethel Census Area, Alaska, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the substructure, rated 7 (good condition) on the 0-9 scale.
It was built in 1996, making it 29 years old at the 2025 inventory.
It carries about 2,380 vehicles a day (traffic count year 2020).
Its listed owner is the state highway agency.
It is one of 7 of the 13 inventoried bridges in Bethel Census Area rated good (53.8%); 1 (7.7%) 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 tee beam
Length	about 103 ft
Location	Mile Point 0.0
NBI structure number	0265
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
Irr:ridgecrest Dr over Browns Slough	1971	2,380	Fair
Irr Bia Rte 6068 over Swampy Slough	2014	400	Good
Irr Bia Rte 1029 over Unnamed Tidal Slough	2002	300	Fair
Irr Bia Rte 6014 over Very Small Slough	2014	200	Good
Irr Bia Rte 6023 over Unnamed Tidal Slough	2005	200	Good
Irr Bia Rte 6040 over Unnamed Tidal Slough	2005	200	Good