RITOCH-POWELL & Associates'​ (RPA) frontline professionals continually seek innovative engineering solutions that enable public safety and sustainability to all communities.  Select RPA for your next project. Our range of services include Special Projects | Transportation | Site Civil | Drainage | Survey | Aviation | Energy + Power | Construction Services. We make project planning and execution easy with our distinctive style and approach. Let us help you solve any project challenges.  RPA has built an impeccable reputation of providing quality predesign, design, post design, and alternative delivery method services since 1978. We serve private clients and local municipal, state, and federal agencies. RPA’s completed projects span the United States, Canada, Mexico, Central America, and South America. We are currently working on hydropower plants in Africa.