Carthage Mills AASHTO (formerly NTPEP) & DOT Map of Geosynthetics That Meet DOT Specs

Carthage Mills‘ Interactive Map shows which of our geosynthetic products meet state DOTs (Department of Transportation) and / or AASHTO Product Evaluation & Audit Solutions (formerly NTPEP – National Transportation Product Evaluation Program). This is listed for each state in the United States of America. Each different state has different rules as well as regulations and also often have an APL (approved products list) or similar list. These lists show which products may be used for specific applications for state funded projects.

geotextile state map ntpep dot

* Subject to change without notice