3144C/ N4543 over San Bois Creek

Haskell County, Oklahoma · rated Fair in the 2025 National Bridge Inventory

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

• 3144C/ N4543 over San Bois Creek in Haskell County, Oklahoma, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
• Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
• It was built in 1968, making it 57 years old at the 2025 inventory.
• It carries about 600 vehicles a day (traffic count year 2022).
• Its listed owner is the county highway agency.
• It is one of 87 of the 154 inventoried bridges in Haskell County rated fair (56.5%); 11 (7.1%) are rated poor.
• A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.

View this bridge on a map → (35.29786, -94.93226)

Component ratings

Bridge details

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

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