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  • A3 Underground Construction
    A3 Underground Construction
    208-630-3017
    3494 Rush Creek Rd., 83610  Cambridge

    A3 Underground Construction is a licensed and insured excavation and septic system contractor with over 30 years of experience. We are fully qualified to provide septic system installation and repair; underground drainage solutions; utility and joint trenching; grading, demolition and excavating th…