Concrete construction Baltimore, Annapolis & Prince Frederick provides top quality concrete services on thousands of projects with more than 15 years of experience. Many concrete companies in Baltimore can provide high quality concrete work, but at J Keen Construction Baltimore make your concrete project completely leisurely. In addition to ensuring the highest quality, our leadership, processes and experience make it extremely easy to carry out relevant specific projects. J Keen Construction works for heavy highways. J Keen Construction provides specialized services including outdoor concrete placement and specialty concrete work, courtyards and landscaping.