I have complete confidence in Infinity's ability to deliver high construction quality at a competitive price. I know you make patient and hospital interests the priority every day. I appreciate how you collaborate with our architects to meet the exacting requirements of our healthcare professionals. When plans change midstream, you adapt without complaint, which makes my job far easier. As you know sports construction is one of the core competencies of our firm. We have worked with many construction managers from coast to coast.
Infinity Construction Co., Inc. (Infinity) was Incorporated in Ohio November 20, 1996 as a C-Corp. Its founders and corporate officers include: Charles A. Izzo - President, George F. Nemeth - Vice President of Preconstruction Services, Secretary/Treasurer and James Fantozzi - Vice President of Construction Services. We believe that every client has a vision that drives why they build or renovate their work space. Your vision, not ours, is the priority of every Infinity professional, so we have a commitment to unmatched customer service.
Infinity's construction management at-risk (CMAR) portfolio totals more than $300 million. Our largest CMAR contract is $68 million. In 2019 more than 61% of our volume was CMAR contracts with an average project value of $5.1 million. Infinity contracts as a CMAR on both public and private projects. Our experience includes several projects completed under the Integrated Project Design construction management variant. We prefer early involvement because it allows us to share best practices and lessons learned from previous projects.
Infinity provides general contracting services on both public and private projects. Our general contracting portfolio totals more than $625 million. The best scenario for using this traditional construction delivery method is when the schedule and complexity of a project are relatively straightforward. It is used most frequently for projects of $5 million or less. Infinity has completed general contracting projects using a variety of its hybrids including lump sum public bidding, prime bidding, invitation-only private bidding, negotiated lump sum and cost-plus.