Approved products list
The Iowa DOT's Office of Construction and Materials receives many requests for the Iowa DOT's approved products list. This information is maintained in the Materials Instructional Memorandums (IM). Search the MAPLE database to find specific products. To submit a request for approval, contacts may be found by product and corresponding IM in Materials IM 204, Appendix Z..
For new products not found in the current IMís, contact Kevin Jones.