Home › Oregon › Polk County › OR 18 (Hwy 39) over Hwy 30

OR 18 (Hwy 39) over Hwy 30

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

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

OR 18 (Hwy 39) over Hwy 30 in Polk County, Oregon, is rated in fair condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 1958, making it 67 years old at the 2025 inventory.
It carries about 8,172 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 113 of the 162 inventoried bridges in Polk County rated fair (69.8%); 12 (7.4%) 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.

Component ratings


Structure	Continuous concrete tee beam
Length	about 257 ft
Location	025 Mi W Polk Yam Co Ln
NBI structure number	08321 039 02728
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
Or 22 (HWY30AZ) E over Hwy 150 Conn. & Park Rd	1953	45,083	Fair
Or 22 (hwy 30) over Boat Moorage Access	1963	44,753	Fair
Or 22 (hwy 30) over OR 221 (HWY 150) Conn	1963	29,957	Fair
OR 22 (Hwy 30) over Mud Slough	1973	28,015	Good
Or 22 (hwy 30) Con over Wallace Marine Park	1953	22,964	Fair
OR 22 (Hwy 30) over W&p RR	1973	22,774	Good