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I-84 (hwy 002) EB over Three Mile Canyon East

Morrow County, Oregon · rated Good in the 2025 National Bridge Inventory

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

I-84 (hwy 002) EB over Three Mile Canyon East in Morrow County, Oregon, is rated in good condition in the 2025 National Bridge Inventory (as of August 20, 2026).
Its lowest-rated component is the deck, rated 7 (good condition) on the 0-9 scale.
It was built in 1964, making it 61 years old at the 2025 inventory.
It carries about 7,162 vehicles a day (traffic count year 2022).
Its listed owner is the state highway agency.
It is one of 29 of the 71 inventoried bridges in Morrow County rated good (40.8%); 3 (4.2%) are rated poor.
A good rating means every major component - deck, superstructure, substructure, or culvert - is rated 7 or higher on FHWA's 0-9 scale: no more than minor problems.

Component ratings


Structure	Prestressed concrete stringer or multi-beam girder
Length	about 195 ft
Location	046 Mi E Heppner Jct
NBI structure number	09307A002 15175
Condition class	Good

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

Bridge	Built	Vehicles/day	Condition
I-84 (hwy 2) EB over Port of Morrow I/c (EB)	1984	10,457	Good
I-84 (hwy 2) WB over Port of Morrow I/c (WB)	1984	10,457	Fair
I-84 (hwy 006) EB over Irrigon Jct Interchange	1962	9,643	Fair
I-84 (hwy 006) over Irrigon Jct Interchange	1962	9,643	Fair
I-84 (hwy 002) WB over Three Mile Canyon West	1965	7,162	Fair
Patterson Ferry Rd over Patterson Ferry Rd Canal	1973	6,066	Fair