Corrugated polyethylene pipe (HDPE)
*NOTE: For projects awarded after January 1, 2009; Corrugated Polyethylene Pipe (HDPE) manufacturing facilities will be required to be reviewed and in compliance with AASHTO's National Transportation Product Evaluation Program (NTPEP) for producers of HDPE thermoplastic pipe. Determine if a pipe manufacturing plant is qualified as a supplier to MnDOT. If the audit has been completed this plant has met MnDOT requirements. When clicking on the production details (far right column) for each location, the blue X's denote that particular size and type of pipe is manufactured at that location.