Detectable warning surfaces (truncated domes)-Permanent
For temporary applications, see the Temporary Pedestrian Access Route (TPAR) devices page.
| Product Name | Manufacturer* | Phone Number | Approval Date |
|---|---|---|---|
| DURALAST Cast Iron: Coated or Uncoated | EJ Foundry (formerly East Jordan Iron Works) | 800-874-4100 | 07/18/05 |
| Cast Iron: Coated or Uncoated | Neenah Foundry Co. | 800-252-5801 | 09/08/05 |
| IRON PED Cast Iron: Coated or Uncoated | Mfg. by Neenah Foundry Co. | 763-478-8128 | 01/29/10 |
| CAST-DWD OR CAST CORP Cast Iron: Coated or Uncoated | Cast Corporation | 218-263-9510 | 04/15/10 |
| CAST-DWD Cast Iron: Coated or Uncoated | Pioneer Detectable, LLC | 262-370-5355 or 877-270-3663 | 08/26/10 |
| Advantage Tactile Systems Cast Iron Plates: Coated or Uncoated | Mfg. by Waupaca Foundry | 800-679-4022 | 08/10/12, revised 04/21/17 |
| Duratek-CI: Uncoated | Detectile Corp. | 312-213-1507 | 10/04/12 |
| TufTile Cast Iron Tiles: Coated or Uncoated | TufTile ADA Tactile Products | 888-960-8897 | 06/02/14 | Irondome Cast Iron | ADA Solutions, Inc. | 800-372-0519 | 03/10/15 | Equal Tile Cast Iron | Equal Tile | 800-996-4510 | 01/10/23 | Cast Iron | Detectable Warning Systems (DWS) | 866-999-7452 | 03/10/23 |
*NOTE: Federal Aid Projects require US Code of Federal Regulations 23CFR635.410, the "Buy American Steel and Iron Regulation" be followed. This is stated in the Contract Special Provisions (1601) SOURCE OF SUPPLY AND QUALITY. The iron detectable warning surfaces on this list may or may not be made in the USA. It is the contractors responsibility to ascertain the country of origin before installing or purchasing detectable warning surfaces, if the above regulation applies. At this time MnDOT is only allowing cast iron detectable warning surfaces. Approval Status is based upon the individual foundry and the submitted pattern. A change in the foundry or pattern voids the approval and a new sample must be submitted.