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 iconI-480/I-29/West Broadway Interchange Constructability Meeting
The following information is for the constructability meeting for I-480/I-29/West Broadway Interchange in the Council Bluffs Interstate System (CBIS) Improvement Program.

Constructability meetings will be held on June 14-15, 2017 in 2-hour blocks of time. Contractors must schedule a time with the CBIS project office by 4:00 p.m. Wednesday, June 7. The CBIS project office is located at:

1751 Madison Avenue, Suite 750
Council Bluffs, Iowa, 51503

Download plans and scrolls.


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