Technically it is difficult for the DOT to approve a manhole repair protocol since they typically do not have jurisdiction over the manhole structure. They do control the roadway surrounding the structure. In our twenty year experience the Mr. Manhole products have been successfully used on many state highways and we have never heard of a dispute or "refusal to allow" situation. On the contrary the Mr. Manhole system is gladly embraced as the first fully engineered solution for the manhole chimney section rebuild or frame adjusment .