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20 S 11 W 36.00: over North Fork Smith River

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

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

20 S 11 W 36.00: over North Fork Smith River in Douglas 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 50 vehicles a day (traffic count year 2023).
It is one of 440 of the 703 inventoried bridges in Douglas County rated fair (62.6%); 17 (2.4%) 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 160 ft
Location	45.2 miles NE of Hwy 101
NBI structure number	0000000L1439049
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
I-5 (hwy 001) over I-5 @ Bellows St	1976	46,894	Fair
I-5 (hwy 001) over I-5 @ Harvard Ave	1976	46,894	Fair
I-5 (hwy 001) over I-5 @ Portland Ave	1954	42,268	Fair
I-5 (hwy 001) over I-5 @ Speedway Rd	1955	41,824	Fair
I-5 (hwy 001) over I-5 @ Mclain Rd	2009	41,701	Fair
I-5 (hwy 001) over Creek	1954	29,858	Fair