Other Notices

The April 21, 2026 letting we will be using the new enhanced bidding on BidX.

Please review the updated requirements:

• Existing Digital ID holders will be prompted to import their Digital ID to their browser.

• The first time you open a proposal, a security key will be created. This serves as a backup to your Digital ID.

Resources:

Contractor Information

Bid Guides

Please review the materials and prepare for the change. If you have any questions, contact dot.contracts@iowadot.us.

The purpose of this meeting is to gather industry feedback on the constructability of the Gordon Drive Viaduct Reconstruction project in Sioux City.  The Iowa DOT seeks input on the preliminary design to identify potential challenges and opportunities for improving constructability, cost-effectiveness, and project delivery.  The meeting is on Monday, March 2, 2026, from 1-3pm. 

Project description and preliminary files for review (zip folder)

Join the Microsoft Teams meeting

A constructability meeting for the Missouri Valley Bypass project will be held Monday, Feb. 2, 2026 from 2-3:30 P.M. The hybrid meeting will be held in Ames in a meeting room next to the DOT's main entrance, and online via the link (below). This U.S. 30 two-lane bypass of Missouri Valley is approximately 4 miles long, and includes 4 new bridges (2 over Union Pacific Railroad). Grading and bridges will be let in July of 2027. Paving will be let in July of 2029.

Agenda (80.33 KB) Archived .pdf
Online Meeting

The Iowa DOT has updated the contractor insurance provisions in Specification 1107.02, Insurance.  These changes impact coverage limits as well as other updates.  These new requirements will be effective January 1, 2027.  Contractors may meet these new requirements through their annual renewals or through an update to a current policy, provided the provisions are met prior to the posted deadline.  The new specification is attached for your information (90.26 KB) Archived .pdf and use in updating your policies.