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31 S 05 W 02.00: over Trib of West Fork Canyon

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

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

31 S 05 W 02.00: over Trib of West Fork Canyon 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 superstructure, rated 6 (satisfactory condition) on the 0-9 scale.
It was built in 2009, making it 16 years old at the 2025 inventory.
It carries about 5 vehicles a day (traffic count year 2024).
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	Steel stringer or multi-beam girder
Length	about 69 ft
Location	1.5 miles W of I-5 (exit
NBI structure number	0000000L2015831
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