Hwy 171 (or 224) over N/a

Clackamas County, Oregon · rated Good in the 2025 National Bridge Inventory

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

• Hwy 171 (or 224) over N/a in Clackamas County, Oregon, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
• Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
• It was built in 1996, making it 29 years old at the 2025 inventory.
• It carries about 912 vehicles a day (traffic count year 2022).
• Its listed owner is the state highway agency.
• It is one of 113 of the 367 inventoried bridges in Clackamas County rated good (30.8%); 17 (4.6%) are rated poor.
• A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

View this bridge on a map → (45.22464, -122.24677)

Component ratings

Bridge details

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

Busiest bridges in Clackamas County

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

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