This page is where the public copy of bidder submissions are posted for public review. The Bid Letting Unit is responsible for construction project advertisements, assisting with electronic bidding, fulfilling requests for eligibility to bid.Bid Information for upcoming road agency projects can be found here. To register as a vendor, visit the MITN website and complete the online vendor registration form. View current bid packages, bid packets, bid specifications for city projects and the forms that accompany them can be accessed via MITN Purchasing Group. Information for Bidders. 1. Receipt and Opening of Bids. 2. Complete all requested information in the Bid Form.