Bridge conditions in Grady County, Oklahoma

447 inventoried bridges · 31 rated poor · 2025 National Bridge Inventory

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

Grady County tracks close to typical: 31 of its 447 inventoried bridges (6.9%) are rated poor, against a national rate of about 7%.

• 31 of the 447 bridges in Grady County, Oklahoma, are rated in poor condition (6.9%) in the 2025 National Bridge Inventory, as of August 20, 2026.
• 114 bridges (25.5%) are rated good and 302 (67.6%) fair.
• The median Grady County bridge was built in 1989.
• The busiest poor-rated bridge is N2830 (16 St) over Line Creek (built 1933), carrying about 2,358 vehicles a day.

Good 25.5% · Fair 67.6% · Poor 6.9% of 447 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.

Every bridge in Grady County → - all 447, busiest first, each with its own condition record.

All of Oklahoma: Oklahoma 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.