
Mary Karlsson, PTP, P.E.
Mary Karlsson is a Senior Project Manager at Quandel Consultants, specializing in transportation project development and delivery, including rail planning, preliminary engineering, environmental review, and engagement and communication. Mary is experienced as a public sector operator and as a consultant. She has been responsible for the successful oversight of rail, transit, and highway projects for the Illinois, Michigan, and Minnesota Departments of Transportation; the Greater Minneapolis-Saint Paul Region Metropolitan Council; other agencies across the United States; and various railroads. She partners with her clients to lead teams of professionals while developing and managing scope, budgets, and schedules consistent with contracts. She excels in strategic planning, partnership building, and consensus driving that engages owners, agencies, stakeholders, and the public, and empowers her clients in navigating complex initiatives and fostering durable decision-making.
