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FARMINGTON PIT

i-5 north, sr-217 turn off on ramp towards beaverton. turn left onto farmington road., Washington County, OR

MSHA ID3500634

TYPESurface

MATERIALCrushed, Broken Traprock

EMPLOYEES33

ABOUT

Farmington Pit, operated by Knife River Corporation-Northwest, supplies high-quality crushed and broken traprock for a variety of construction applications. Located in Washington County, OR, with convenient access to I-5 and SR-217 near Beaverton, this surface mine operation ensures efficient delivery to Portland metro area projects. With 33 employees, Farmington Pit provides reliable material sourcing backed by Knife River Corporation's industry experience.

MATERIALS PRODUCED

Crushed, Broken Traprock

DIRECTIONS

100

CONTACT

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45.457500, -122.905000

Data Source

Mine Safety and Health Administration (MSHA)

Last updated: 1/30/2026

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