Over six decades of professional experience. Over 20,000 successful projects. Offices conveniently spanning Colorado. An unwavering commitment to quality, delivered on-time and within budget, one project at a time.

These are the cornerstones upon which Drexel, Barrell & Co. has built our reputation for excellence. Since 1949, public and private sector clients have trusted us to provide land surveying, civil, transportation, traffic, and water resources engineering. We handle complex projects by combining time-tested practices with innovative approaches. This is our way of matching the best solutions with the unique needs of each project to ensure your success.

Recent Drexel Barrell projects include: Rocky Mountain Fire District Stations 1, 4, 5, and 6 in Boulder County; Greeley US 85 / 13th Street Intersection Improvements; Greeley Leprino Cheese Factory Site Infrastructure; CU-Boulder Engine Alley Water Line Improvements; Mesa County Coffman Road Intersection Improvements; CU Boulder′s Williams Village North Residence Hall (certified LEED Platinum); City of Pueblo 29th St. Drainage Improvements; Steamboat Springs West Area Water Storage Facilities; Wheat Ridge bike-pedestrian-streetscape master plan update; Routt County Chicken and Slater Creek Bridges; Boulder Vehicle Storage Facilities; CU-Boulder new recreation center complex; City of Rifle Transit Oriented Development Planning; City of Colorado Springs Las Vegas / Royer Intersection Realignment; City of Longmont Spring Gulch 2 Trail and Drainage Improvements; City of Florence On-Call Engineering Services