West Stayton Rd over Mill Creek

Marion County, Oregon · rated Poor in the 2025 National Bridge Inventory

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

• West Stayton Rd over Mill Creek in Marion County, Oregon, is rated in poor condition in the 2025 National Bridge Inventory (as of August 20, 2026).
• Its lowest-rated component is the substructure, rated 4 (poor condition) on the 0-9 scale.
• It was built in 1966, making it 59 years old at the 2025 inventory.
• It carries about 3,417 vehicles a day (traffic count year 2020).
• Its listed owner is the county highway agency.
• It is one of 29 of the 375 inventoried bridges in Marion County rated poor (7.7%); 29 (7.7%) are rated poor.
• Its traffic status in the 2025 inventory is open, no restriction (NBI item 41).
• It was rated fair in the 2024 inventory and is now poor (substructure 5 to 4, deck 6 to 7, superstructure 6 to 7).
• Its most recent inspection on record is dated August 2024, on a 24-month routine inspection cycle.
• It is coded scour critical (NBI item 113 = 3): scour critical: foundations unstable for the assessed or calculated scour.
• A poor rating means at least one major component - deck, superstructure, or substructure - is rated 4 or lower on FHWA's 0-9 scale. It does not by itself mean the bridge is unsafe; bridges judged unsafe are closed or load-restricted by their owners.

View this bridge on a map → (44.83909, -122.87308)

Component ratings

Bridge details

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

Busiest bridges in Marion County

All bridges nearby: Marion County, OR bridge conditions · every bridge in Marion County · Oregon bridges.

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