Hi-Grade Materials Company ready-mix concrete plant in Oro Grande, CA
Oro Grande Plant · serving Oro Grande, CA 92368 (San Bernardino County)
NRMCA-certified
Hi-Grade Materials Company (Oro Grande Plant) is an NRMCA-certified ready-mix concrete plant serving Oro Grande, CA 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 #33970
Listed as certified when last checked 2026-07-03 · expires 2027-04-17
Contact
(760) 244-9325
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 Hi-Grade Materials Company.