Approved Products (Maple)

MAPLE contains a searchable database of most of the approved products, sources, producers, and suppliers of materials for Iowa highway projects. MAPLE may be searched by the brand/product name, producer, Materials Instructional Memorandum (IM) number, or material name. 

2025 Work Zone Information Sharing Workshop for DOT Employees

Register to attend this informational conference on Tuesday, December 9 at the Gateway Hotel & Conference Center, Ames, Iowa.  Don't miss this opportunity to learn and connect.