Determann Asphalt was established in 1938 and is located in Camanche, IA. Determann services the Iowa counties of Clinton, Jackson, and Scott. We also service Whiteside county in Illinois. Our services include: asphalt mix production for private, commercial, state, and federally-funded projects. No project is too big or small. In addition to pavement maintenance services, we also have a fleet of trucks readily available for hire.