Home › Alaska › Copper River Census Area › Richardson Highway over Gulkana River

Richardson Highway over Gulkana River

Copper River Census Area, Alaska · rated Poor in the 2025 National Bridge Inventory

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

Richardson Highway over Gulkana River in Copper River Census Area, Alaska, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 4 (poor condition) on the 0-9 scale.
It was built in 1974, making it 51 years old at the 2025 inventory.
It carries about 880 vehicles a day (traffic count year 2020).
Its listed owner is the state highway agency.
It is one of 3 of the 53 inventoried bridges in Copper River Census Area rated poor (5.7%); 3 (5.7%) are rated poor.
A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

Component ratings


Structure	Continuous steel stringer or multi-beam girder
Length	about 404 ft
Location	Mile Point 129.8
NBI structure number	0574
Condition class	Poor

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

Bridge	Built	Vehicles/day	Condition
Glenn Highway over Little Nelchina River	1973	820	Good
Glenn Hwy Spur over Little Nelchina River	1952	765	Fair
Glenn Highway over Mendeltna Creek	1977	760	Fair
Glenn Highway over Tolsona Creek	2013	710	Good
Richardson Highway over Tazlina River	1973	640	Fair
Irr:old Align Rich over Klutina River	1957	480	Fair