Welcome to Control Line Inc. We design and install Parking lots. We do the layout, design, and OSHA markings. We are located in St. Louis, Mo. Before you do your parking lot, please consider us for quality work and top notch service. We use only the finest materials and operate with integrity and promptness.Quality in the St. Louis and Metro East area that far exceeds the competition! No job is too big or to small for Control Line Inc.Call today for an estimate and see why we are the best on both sides of the river.