Frequently Asked Questions
Q. What is the ERL?A. The Electronic Reference Library (ERL) is a collection of manuals produced by the Iowa DOT. The ERL includes:
- Standard Specifications for Highway and Bridge Construction with the General Supplemental Specifications incorporated in redline and strikeout
- Supplemental Specifications
- Standard Road Plans, Standard Culvert Plans, Standard Bridge Plans, and Sign Truss Standards
- The Construction Manual
- Materials Instructional Memorandums (I.M.s)
- The Flagger Handbook
- The Statewide Urban Standard Specifications (SUDAS)
Q. How often is the ERL revised?
A. Twice each year in conjunction with the April and October highway and bridge construction lettings.
Q. How often is the General Supplemental Specifications revised?
A. Twice each year in conjunction with the April and October highway and bridge construction lettings.
Q. How can I obtain a Standard Specifications 2001 book?
A. Click here to order your 2001 Spec Book.
Q. How can I obtain a copy of the most recent updates to the Standard Specifications 2001 Book?
A. Click here to obtain a copy of the General Supplemental Specifications (GS).
Q. How can I obtain the latest version of the ERL (Electronic Reference Library)?
A. Click here to order the latest version of the ERL. Fill in the appropriate information.
Q. How can I obtain a copy of the current General Supplemental Specifications book?
A. Click here to receive a printed copy of the GS.
