approved products

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Corrugated Polyethylene Pipes (HDPE)

Manufacturer Comments
Advanced Drainage Systems Inc. (ADS)


Locations may be listed under ADS, Inc.


Quality Culvert Inc.

Timewell Drainage Products and Services

Suspended until updated audit is complete.


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. To determine if a pipe manufacturing plant is qualified as a supplier to MnDOT, click on the following link: 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.





Jim Kochsiek

Office of Materials and Road Research