CalPortland Company ready-mix concrete plant in National City, CA
National City Plant 316R · serving National City, CA 91950-1005 (San Diego County)
NRMCA-certified
CalPortland Company (National City Plant 316R) is an NRMCA-certified ready-mix concrete plant serving National City, 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 #34901
Listed as certified when last checked 2026-07-03 · expires 2027-08-22
Contact
(619) 474-8318
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 CalPortland Company.