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Doing Business with the Iowa DOT


Purchasing and Selling

Purchasing and Selling

Consultant Resources

Consultant Resources

Contractor Resources

Contractor Resources


  • Inventory Stock Catalog
  • Property Sales
  • Selling to the DOT: What we buy and how to do business with us
  • Used Vehicle and Equipment Auctions
  • Vendor Application Form



    • Consultant/Designer Resources Home
    • Manuals
    • Standard Drawings
    • Automation Tools
    • Consultant Resources
    • Designer Resources
    • Memos and Revisions
    • Office Web Sites

  • Bid Letting Information: Pre-letting and post-letting information (Bid Express®)
  • Contractor Cap and Hammer Database
  • Contractor Evaluation Program
  • Contractor's Corner
  • Disadvantaged Business Enterprise (DBE) Program
  • Electronic Weekly Letting Report
  • Letting Process
  • Training & Certification, Materials


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Other Resources


  • Specifications for Highway and Bridge Construction
  • Frequently Requested Forms
  • Electronic Reference Library (ERL)
  • All Systems Permit County and City Route Maps
  • Iowa Road Signs

Local Governments


  • Office of Local Systems
  • Bid Thresholds for Cities and Counties
  • Instructional Memorandums to Local Public Agencies
  • Federal-aid Project Development Guide
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