Bridge conditions in Trego County, Kansas

165 inventoried bridges · 6 rated poor · 2025 National Bridge Inventory

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

Trego County tracks close to typical: 6 of its 165 inventoried bridges (3.6%) are rated poor, against a national rate of about 7%.

• 6 of the 165 bridges in Trego County, Kansas, are rated in poor condition (3.6%) in the 2025 National Bridge Inventory, as of August 20, 2026.
• 77 bridges (46.7%) are rated good and 82 (49.7%) fair.
• The median Trego County bridge was built in 1964.
• The busiest poor-rated bridge is 380th AVE(RS 1747) over Trib to Smoky Hill River (built 1934), carrying about 75 vehicles a day.

Good 46.7% · Fair 49.7% · Poor 3.6% of 165 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 Kansas: Kansas 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.