Issue Date - October 21, 2025

The new ERL is now live, and can be found at https://erl.iowadot.gov/.

The Legacy ERL is provided as a mobile-friendly version.

The April 15, 2025 ERL has moved to the archive.

Browse ERL library

  1. Standard Specifications with GS-23005
  2. Supplemental Specifications
  3. Materials I.M.s
  4. Standard Road Plans
  5. Standard Culvert Plans
  6. Standard Bridge Plans
  7. Sign Truss Standards
  8. Flagger Training Website
  9. Intelligent Transportation Systems Standards
    10. The following are not Iowa DOT contract documents, but are provided for information purposes:
  10. Construction Manual
  11. SUDAS Standard Specifications

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