Pioneer Avenue over Mission Creek

Chelan County, Washington · rated Fair in the 2025 National Bridge Inventory

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

• Pioneer Avenue over Mission Creek in Chelan County, Washington, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
• Its lowest-rated component is the superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
• It was built in 1936 and reconstructed in 1979, making it 89 years old at the 2025 inventory.
• It carries about 3,742 vehicles a day (traffic count year 2020).
• Its listed owner is a city or municipal highway agency.
• It is one of 56 of the 148 inventoried bridges in Chelan County rated fair (37.8%); 12 (8.1%) are rated poor.
• Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
• Its class is unchanged from 2024 (fair), but component ratings moved: substructure 6 to 7.
• Its most recent inspection on record is dated October 2024, on a 24-month routine inspection cycle.
• 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 → (47.51667, -120.46667)

Component ratings

Bridge details

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

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