Electronic Reference Library (ERL)
The ERL contains the following resources:
Construction Manual
Flagger's Handbook
Materials IMs
Standard Plans
The Materials IMs contain approved material sources, procedures, supplies, and fabricators.

Doc Express Instruction Guide for Contractors and Suppliers
Construction and Materials building

Office of Construction and Materials

Iowa Department of Transportation
800 Lincoln Way
Ames, IA 50010

Phone: 515-239-1352
Fax: 515-239-1092