09/08/2026
Approved in Louisiana — and Texas.
TDR Pro and TDR Ultra are now on the Louisiana Department of Transportation and Development (DOTD) Approved Materials List, so both lines are listed and approved for use on Louisiana projects involving the Department of Transportation and Development.
The same products already hold Texas Department of Transportation approval — one dependable pipe solution, pre-approved across both states.
✅ TDR Ultra (HDPE) & TDR Pro (PP) dual-wall corrugated pipe
✅ Approved from 12" to 60"
✅ Built for demanding drainage and stormwater