Current letting schedule

The current letting schedule provides the list of current bid opportunities made available by the Purchasing Section of the Iowa DOT. This site contains bid opportunities for facility improvement projects, miscellaneous large and small equipment, vehicles miscellaneous goods and services. There are two types of bid solicitation. The method used is determined by Iowa Administrative Code based on the cost of purchase as defined herein.
  • 1. Formal
    A formal, sealed bid procedure is used for purchase of goods and/or services exceeding $50,000.00.

  • 2. Informal
    An Informal bid procedure is used for purchase of goods and/or services less than $50,000.00.

  • Request for Information
    (RFI) may be sought by the Department at any time for purposes of seeking industry knowledge of products or services.
Pertinent information regarding the bid solicitation along with links to all associated presented below in three different categories; Formal, Informal or RFI.

All correspondence, documents, addendums or other pertinent information will be posted below for each bid opportunity. Bidders will be required to visit this website periodically fo all updates. This information will no longer be sent to respective bidders once the bid proposal has been posted.

Please use the furnished mailing label included in each bid proposal, or include  “Iowa Department of Transportation, proposal number & letting date” on the outside of the return envelope.

Construction projects

The Iowa DOT's Purchasing Section will no longer provide plan holders lists of potential prime contractors. Sets of plans and specifications for construction projects are now attached to the bid opportunity located on this website. To the fullest extent possible, plan rooms will be utilized statewide for bidders to have the ability to print bid proposals, plans and specifications. Click here for a list of planrooms. Potential bidders will not be made available prior to the bid opening for projects.

For your convenience, the following link will route you directly to State of Iowa, Information Security Office website.

Terms and conditions

All bid proposals are subject to terms and conditions as required.
PDF file Formal Standard Terms and Conditions

PDF file Informal Standard Terms and Conditions


Request for Bid (RFB)

Bid Proposal No. Bid Proposal Description Response Due Date Bid Bond Required (Y/N) Email Agent

Weed Abatement and Control Spraying Statewide

Addendum 1

Addendum 2

6/1/2016 N Rhonda Ruark

RWIS Equipment

6/8/2016 N Zachary Gillen


Request for Proposal (RFP)

Proposal No. Proposal Description Response Due Date Bid Bond Required (Y/N) Email Agent

Permanent Dynamic Message Signs Using Full Matrix and Full Color LED Technology

Appendix B - Sign Support Truss Drawings

Appendix C - Example DMS Messages

Addendum 1

Questions and Responses Set 1

Addendum 2

6/2/2016 N Zachary Gillen

Statewide ITS Maintenance

Iowa DOT Electronic Records Library

6/15/2016 N Zach Gillen

Interstate Rest Area Janitorial Maintenance

Questions and Answers Set 1

6/8/2016 N Laura Linduski


Proposal No. Proposal Description Response Due Date Bid Bond Required (Y/N) Email Agent

Motor Vehicle Enforcement Weigh Station Sidewalk Replacement Brandon N & S bound scale


5/25/2016 N

Jody McNaughton


RFB16657 Snow Fence Posts FY 2017 6/8/2016 N Laura Linduski


RFI No. Description Due Date Email Agent


Notice to all vendors:
All bid solicitations are subject to change. It is the responsibility of the vendor to check this Web site for any future addendums, questions, revisions, etc., prior to the bid opening. Failure to do so will be the responsibility of the vendor.

Please contact the listed agent above for any questions.
For more information about the purchasing agents and their assigned commodities, please click here.

Purchasing Home | Contact Us | State of Iowa
This page is maintained by Laura Linduski, Iowa DOT Purchasing