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 - updated October 2015

Contractor/Supplier Doc Express Cookbook October 2015
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