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 Letting Date Proposal Guaranty Required Email Agent

Overhead Doors, Openers, Installation & Repair Service for various Statewide Maintenance DOT Locations

Addendum 1

Addendum 2

Questions and Responses Set 1

Addendum 3

Addendum 4

9/30/2015 *Revised Letting Date:* 10/7/2015 None Jody McNaughton

Model Year 2016 Trucks, Vans and SUVs

Vehicle Bid Specifications

Addendum 1

10/9/2015 None Zachary Gillen

Miscellaneous Shop and Vehicle Use Items

Addendum 1

10/14/2015 None Jean Gustafson

Semi-Trailer, Double Drop Detachable Neck

10/14/2015 None Zachary Gillen

New Construction for Des Moines North Maintenance facility, Brine and Pole buildings

October 26, 2015 at 1:00 p.m.: Mandatory pre-bid for General Contractors. Location: 1530 NE 53rd Ave, Des Moines IA 50313

Specifications and Plans (zip files)

Opening zip files

Double-click the zip file you want to open or right click and choose "Extract all" and follow the directions.

12/2/2015 $300,000.00 Jody McNaughton

50/50 mix buildings for Hanlontown, New Hampton and Mason City.

Hanlontown Plans

New Hampton Plans

Mason City Plans


10/28/2015 $3,700.00 per building bid on Jody McNaughton


Request for Proposal (RFP)

Bid Proposal No. Bid Proposal Description Letting Date Proposal Guaranty Required Email Agent

Statewide Roadway Data Collection Services

Appendix B - Data Dictionary

Addendum 1

Addendum 2

Addendum 3

Questions and Responses Set 1

Questions and Responses Set 2

Questions and Responses Set 3

Questions and Responses Set 4

Questions and Responses Set 5

Questions and Responses Set 6

Questions and Responses Set 7

Questions and Responses Set 8

Questions and Responses Set 9

10/7/2015 None Renee Shirley

Electronic Construction Contract Administration System

10/14/2015 None Zachary Gillen


Bid Proposal No. Bid Proposal Description Letting Date Proposal Guaranty Required Email Agent

Tile Boring Project in Dallas County

10/08/2015 None Rhonda Ruark
15253 Software Procurement for State LRTP 10/19/2015 None Jean Gustafson


Bid Proposal No. Bid Proposal Description Due Date Proposal Guaranty Required Email Agent

Contracted Interregional Express
Bus Service

10/28/2015 None Zachary Gillen


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