Steve Manning Construction, Inc. was established in 1989 to help service the construction industry in Northern California with services such as rock excavation, land clearing, and road construction. SMCI has provided quality workmanship at competitive rates and unparalleled customer service. SMCI has grown into one of the North State's premier heavy‑civil general engineering contractors. Specializes in highway construction, rock excavation, slope repair, and portable rock crushing. Today, we ...