Welcome to the 811 Chicago official training and learning platform. We offer convenient online courses to help you understand safe digging practices, comply with Illinois law, and protect critical underground infrastructure. Our training covers key concepts related to the excavation process, including planning and preparation, ticketing requirements, site marking procedures, and damage prevention best practices. By completing this training, you are taking an important step toward safer excavation practices, reducing risk, and helping protect the communities and infrastructure we all depend on.