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.MITN participating local government purchasing departments invite vendors to register for exclusive access to RFPs, bids and awards on the bid system. Bid Information for upcoming road agency projects can be found here. The City of Troy along with other entities from the Metropolitan area use MITN Purchasing Group (BidnetDirect. Com) to register bidders and post bids. Find out the process to bid or create a proposal with the City. To register as a vendor, visit the MITN website and complete the online vendor registration form. Bids shall be publicly opened and read aloud at a date, time, and place designated in the invitation to bid. Just click here to get our Michigan Bid Bond Application.