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Grubstake-hatchers over Willow Creek

Matanuska-Susitna Borough, Alaska · rated Poor in the 2025 National Bridge Inventory

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

Grubstake-hatchers over Willow Creek in Matanuska-Susitna Borough, Alaska, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the superstructure, rated 2 (critical condition) on the 0-9 scale.
It was built in 1945, making it 80 years old at the 2025 inventory.
It carries about 10 vehicles a day (traffic count year 2010).
Its listed owner is the state highway agency.
It is one of 8 of the 121 inventoried bridges in Matanuska-Susitna Borough rated poor (6.6%); 8 (6.6%) 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

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

Bridge	Built	Vehicles/day	Condition
Parks Highway over Seward Meridian U.c.	2005	32,100	Good
Glenn Highway over Knik River Access U.c.	1993	26,600	Good
Palmer-wasill Ext over Cottonwood Overhead	2002	14,000	Fair
Glenn Highway over Matanuska Riv Northbound	1965	13,300	Fair
Glenn Highway over Knik Riv. Overflow S.B.	1993	13,300	Fair
Glenn Highway over Knik Riv. Overflow N.B.	1993	13,300	Fair