Minot, N.D. – Greg Olson has joined the Ackerman-Estvold Minot office as a Senior Construction Inspector. Olson earned an Associate of Science in Civil Engineering from North Dakota State School of Science, Wahpeton, North Dakota. Greg has over four decades of extensive experience in highway construction and bridge inspection with the ND Department of Transportation and served as District Materials Coordinator for the past 17 years. Olson will be primarily responsible for Quality Control & Quality Assurance on job sites along with assisting with job site inspection on projects.