How do I submit a bid or proposal? All formal bids and proposals shall be submitted as specified in the solicitation document.Here, you'll find details about contracting opportunities, vendor qualifications, proposals and how to bid on projects. TTY: 711 Relay Service. Obtain a Surety Bond. The ADOT construction contract you are bidding likely requires a surety bid bond or other proposal guaranty. Bidder must agree to accept full Prime Contractor responsibility for coordinating and controlling all aspects of the contract and any Subcontractors. You must complete at least one (1) Optional Line Item or all Required Line Items in the Items (F) tab in APP in order for your Offer to be considered.