Current ERL Issue - October 15, 2024
The new ERL is now live, and can be found at https://erl.iowadot.gov/. This new system contains the governing version of the ERL.
Starting April 2025 this site will no longer be updated, and the new ERL will be the primary source for the current editions.
The April 16, 2024 ERL has moved to the archives at the new ERL.
Archived releases prior to October 2024 can be found on the legacy archive.
Archived releases prior to October 2024 can be found on the legacy archive.
Browse ERL library
The electronic version governs if there is a discrepancy between the electronic and printed versions.
- Standard Specifications with GS-23003
- Supplemental Specifications
- Materials I.M.s
- Standard Road Plans
- Standard Culvert Plans
- Standard Bridge Plans
- Sign Truss Standards
- Flagger's Handbook
- Intelligent Transportation Systems Standards The following are not Iowa DOT contract documents, but are provided for information purposes:
- Construction Manual
- SUDAS Standard Specifications