Interstate Elevator: Serving Lawrence, Manhattan, Emporia, Wichita, Hutchison, Salina, Topeka and Kansas City We manufacture the most robust custom elevators and parts on the market and service thousands of elevators each year. Our expert engineering and service teams guide you through all your elevator needs We manufacture the most robust custom elevators and parts on the market and service thousands of elevators each year. Our expert engineering and service teams guide you through all your elevator needs.