Irr - S 251 over Smoke Creek

Daniels County, Montana · rated Poor in the 2025 National Bridge Inventory

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

• Irr - S 251 over Smoke Creek in Daniels County, Montana, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
• Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
• It was built in 1954 and reconstructed in 1967, making it 71 years old at the 2025 inventory.
• It carries about 101 vehicles a day (traffic count year 2023).
• Its listed owner is the state highway agency.
• It is one of 4 of the 33 inventoried bridges in Daniels County rated poor (12.1%); 4 (12.1%) are rated poor.
• Its traffic status in the 2025 inventory is posted for load (NBI item 41).
• It was rated fair in the 2024 inventory and is now poor (substructure 5 to 4).
• Its most recent inspection on record is dated August 2024, on a 24-month routine inspection cycle.
• It is coded scour critical (NBI item 113 = 3): scour critical: foundations unstable for the assessed or calculated scour.
• 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.

View this bridge on a map → (48.63996, -105.16987)

Component ratings

Bridge details

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

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