Bridge conditions in Judith Basin County, Montana

45 inventoried bridges · 7 rated poor · 2025 National Bridge Inventory

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

Of the 45 Judith Basin County bridges in the federal inventory, 7 carry a poor rating. That 15.6% share is roughly 2x the national average.

• 7 of the 45 bridges in Judith Basin County, Montana, are rated in poor condition (15.6%) in the 2025 National Bridge Inventory, as of August 20, 2026.
• 26 bridges (57.8%) are rated good and 12 (26.7%) fair.
• The median Judith Basin County bridge was built in 1971.
• The busiest poor-rated bridge is Nfsr #487 over S Fk Judith River (built 1958), carrying about 65 vehicles a day.

Good 57.8% · Fair 26.7% · Poor 15.6% of 45 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 Montana: Montana 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.