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Bridge conditions in Denali Borough, Alaska

27 inventoried bridges · 1 rated poor · 2025 National Bridge Inventory

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

Denali Borough tracks close to typical: 1 of its 27 inventoried bridges (3.7%) are rated poor, against a national rate of about 7%.

1 of the 27 bridges in Denali Borough, Alaska, are rated in poor condition (3.7%) in the 2025 National Bridge Inventory, as of August 20, 2026.
5 bridges (18.5%) are rated good and 21 (77.8%) fair.
The median Denali Borough bridge was built in 1971.
The busiest poor-rated bridge is Parks Highway over Nenana River at Rex (built 1963), carrying about 910 vehicles a day.

Good 18.5% · Fair 77.8% · Poor 3.7% of 27 bridges

Bridges rated poor

Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.

Bridge	Built	Vehicles/day	Condition
Parks Highway over Nenana River at Rex	1963	910	Poor

Busiest bridges in the county

Bridge	Built	Vehicles/day	Condition
Parks Highway over Kingfisher Creek	1971	2,670	Fair
Parks Highway over Hornet Creek	1971	2,670	Fair
Parks Highway over Iceworm Gulch	1971	2,670	Fair
Parks Highway over Nenana River Park Sta	1970	2,340	Fair
Parks Highway over Nenana River Park Bnd	1973	1,680	Fair
Parks Highway over Riley Creek	2015	1,680	Good
Parks Highway over Panguingue Creek	1965	1,640	Fair
Parks Highway over Dry Creek	1965	1,640	Fair
Parks Highway over Dry Creek Overflow	1965	1,640	Fair
Parks Highway over Dragonfly Creek	1971	1,380	Fair

Source: FHWA National Bridge Inventory, 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.

All of Alaska: Alaska bridge conditions by county · every download on the data page.

Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.