MDI Construction & Utility
MDI is committed to keeping road crews and utility workers safe while working in the roadway. We have designed and manufactured a complete line of products to help significantly improve work zone safety through our highly-effective WindMaster® sign stands and roll-up signs.

The MDI invented WindMaster® sign stand has been the industry standard since 1975. It will provide years of dependable service. With a choice of over 17 different styles and deployment options of 1’ to 7’ from ground surface. WindMaster is proudly manufactured at our headquarters in Farmington Hills, Michigan.