Contact Us We're excited to hear from you and help turn your project ideas into reality! Email Us Notice: JavaScript is required for this content. Office Osterhaven Concrete6851 Snow Ave SEAlto, MI 49302 616-318-9501 LicensingState of Michigan: 2102177372Cities of Grand Rapids (SBL-10046), Wyoming, Walker, Kent+Ottawa Road Commissions, East Grand Rapids, Grandville.Bonded and Insured. Accreditation