Or 237 (hwy 342) over Mill Creek

Union County, Oregon · rated Fair in the 2025 National Bridge Inventory

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

• Or 237 (hwy 342) over Mill Creek in Union County, Oregon, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
• Its lowest-rated component is the culvert, rated 6 (satisfactory condition) on the 0-9 scale.
• It was built in 1946, making it 79 years old at the 2025 inventory.
• It carries about 596 vehicles a day (traffic count year 2022).
• Its listed owner is the state highway agency.
• It is one of 85 of the 169 inventoried bridges in Union County rated fair (50.3%); 8 (4.7%) are rated poor.
• 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 → (45.29936, -117.85782)

Component ratings

Bridge details

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

Busiest bridges in Union County

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

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