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Idaho Materials & Construction a CRH Company ready-mix concrete plant in Ontario, OR

Ontario Plant 781 · serving Ontario, OR 97914-4003 (Malheur County)
NRMCA-certified

Idaho Materials & Construction a CRH Company (Ontario Plant 781) is an NRMCA-certified ready-mix concrete plant serving Ontario, OR and nearby ZIP areas. Request a ready-mix concrete quote for your pour (concrete strength, approximate size, pour date, and notes like slump or site access) below.

Certification
NRMCA cert #33964
Listed as certified when last checked 2026-07-03 · expires 2027-03-28
Contact
(541) 889-5885
Location is ZIP-area approximate; confirm exact address with the plant.

Available strengths (PSI), slump, and admixtures aren't verified here. Tell us your spec and we'll confirm with the plant. Estimates only.

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Source: NRMCA Currently Certified Plants directory. Ready Mix Concrete is an independent directory of NRMCA-certified ready-mix concrete plants and is not affiliated with Idaho Materials & Construction a CRH Company.