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Rainbow Lake Road over Tucannon River

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

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

Rainbow Lake Road over Tucannon River in Crook 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 1980, making it 45 years old at the 2025 inventory.
It carries about 20 vehicles a day (traffic count year 2024).
It is one of 39 of the 78 inventoried bridges in Crook County rated fair (50.0%); 2 (2.6%) 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	Timber stringer or multi-beam girder
Length	about 71 ft
Location	1/4 Mi West of Hatchery
NBI structure number	000013271-TMP01
Condition class	Fair

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

Bridge	Built	Vehicles/day	Condition
US 26 (hwy 041) over Crooked River	2006	17,122	Good
US 26 (hwy 041) over Central Oregon Canal	1940	12,150	Fair
Main Street over Ochoco Creek	2004	12,031	Fair
US 26 (hwy 041) over Ochoco Creek	2008	11,592	Fair
Hwy 380 over Flood Control Channel	1987	6,946	Good
Hwy 380 over Ochoco Creek	2014	6,257	Fair