Bridge conditions in Pierce County, Washington

480 inventoried bridges · 22 rated poor · 2025 National Bridge Inventory

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

22 of the 480 bridges the federal inventory lists in Pierce County are rated poor; the rest split 267 good and 191 fair.

• 22 of the 480 bridges in Pierce County, Washington, are rated in poor condition (4.6%) in the 2025 National Bridge Inventory, as of August 20, 2026.
• 267 bridges (55.6%) are rated good and 191 (39.8%) fair.
• The median Pierce County bridge was built in 1972.
• The busiest poor-rated bridge is SR 99 (54TH Ave E) over I-5 Ramps (built 1961), carrying about 29,145 vehicles a day.

Good 55.6% · Fair 39.8% · Poor 4.6% of 480 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 Washington: Washington 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.