Knox Concrete LLC Share: Contractors & Construction SuppliesBusiness Services Knox Concrete LLC Visit Website 913 Snake River Avenue Lewiston, ID 83501 (208) 798-KNOX (5669) (208) 798-5671 (fax) About About 14 years of experience, specializing in flatwork concrete: Patios & Driveways, Shop and Garage Floors, Pole Barn Floors, Sidewalks, Curb and Gutter, Steps, & Basements -- Stamped, Exposed & Stained.