Office of Contracts

Current letting information

Highway lettings typically take place on the third Tuesday of each month. These lettings include interstate, primary and secondary road work, and maintenance projects.

Download letting documents

Prime contractor prequalification

Letting Notices


What We do

The Office of Contracts is the focal point where all pre-letting activities converge so contracting can take place for construction. We are also responsible for two major functions of the Iowa Department of Transportation:

  • Estimating and contract letting.
  • Bid review, monitoring and collusion detection.

Office of Contracts
Iowa Department of Transportation
800 Lincoln Way
Ames, Iowa 50010

Live Tabs

Attention iconER-029-1(122)0--06-36 Pottawattamie County I-29 Reconstruction Acceleration - Pre-Bid


May 9, 2019
Doors open at 12:30.
1PM start.
DOT Materials Conference Rooms
800 Lincoln Way, Ames

A draft agenda and additional information will be provided prior to the meeting.

Attention iconConstructability Review Meeting Minutes for the Widening and bridge repair of I-80/I-35 over the Des Moines River.

Meeting minutes.


Attention iconFebruary 14, 2018 AGC Meeting Documents

Download .zip folder (68MB)

Attention iconI-480/I-29/West Broadway Interchange Constructability Meeting Minutes

Meeting minutes.

Attention iconI-29 Sioux City Segment 2 Constructability Meeting Minutes

Meeting minutes.


Attention iconCargo Preference Act – January 2016
The Cargo Preference Act (CPA) applies to equipment materials and commodities obtained using U.S. Government funds. When transported by ocean vessels, at least 50% of such items must be transported on privately owned United States-flag commercial vessels, if available.

The FHWA has determined the Cargo Preference Act (CPA) and the implementing regulations, 46 CFR Part 381, are applicable to the Federal-aid highway program. Therefore, the CPA requirements are effective for the Federal-aid highway program.

Iowa Contractors: Obtaining Your Railroad Crossing Information

Bidder Status form


Bid Bond changes


Disadvantaged Business Enterprise (DBE) good faith effort process