At Old Line Construction, Inc. we provide general construction services to industrial, government, commercial, and noncommercial clients. Our team has over 40 years of experience in the general construction business and has worked on a vast number of projects. We are a heavy highway construction business specializing in underground utilities including water mains, sewers, storm drainage, excavation, and demolition. We complete work all throughout the DC, Maryland, and Virginia area.


Want to learn more about who we are? Come read more about the talented people that make our company what it is.


We are a trusted resource for projects all across the region. We work in Maryland, Virginia, and Washington, D.C. See some of the work we’ve done around town!


We offer a range of services including Demolition, Water Main and Sewer work, and Excavation. See our full list of services.