Bridge conditions in Dillingham Census Area, Alaska

3 inventoried bridges · 2 rated poor · 2025 National Bridge Inventory

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

About one in 2 bridges in Dillingham Census Area is rated in poor condition: 2 of 3 on the federal inventory, one of the higher shares in Alaska.

• 2 of the 3 bridges in Dillingham Census Area, Alaska, are rated in poor condition (66.7%) in the 2025 National Bridge Inventory, as of August 20, 2026.
• 1 bridges (33.3%) are rated good and 0 (0.0%) fair.
• The median Dillingham Census Area bridge was built in 1980.
• The busiest poor-rated bridge is Irr:airport Road over Unnamed Creek Koliganek (built 1980), carrying about 50 vehicles a day.

Good 33.3% · Fair 0.0% · Poor 66.7% of 3 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.

Busiest bridges in the county

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.