Iowa Department of Transportation
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Specifications

Electronic Reference Library (ERL)

Electronic Reference Library

General Information

Frequently Asked Questions

Questions and answers about ERL. Also see our FAQs for obtaining Standard Specification book and more.

ERL Archive

Find past issues of the Electronic Reference Library General Suppplemental Specifications.

Specification Committee

Consists of office directors or their designees. More

Order Forms

Contact Us

Phone: 515-239-1742
Fax: 515-817-6507
Address: 800 Lincoln Way, Ames, IA 50010
E-mail: DOT.Specifications@dot.iowa.gov