Bridge conditions in Washington County, Utah

177 inventoried bridges · 1 rated poor · 2025 National Bridge Inventory

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

1 of the 177 bridges the federal inventory lists in Washington County are rated poor; the rest split 33 good and 143 fair.

• 1 of the 177 bridges in Washington County, Utah, are rated in poor condition (0.6%) in the 2025 National Bridge Inventory, as of August 20, 2026.
• 33 bridges (18.6%) are rated good and 143 (80.8%) fair.
• The median Washington County bridge was built in 1998.
• The busiest poor-rated bridge is Co Rd Inter X-road over I-15 (SR-15) NB and SB (built 1959), carrying about 66 vehicles a day.

Good 18.6% · Fair 80.8% · Poor 0.6% of 177 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 Utah: Utah 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.