Obtain a Surety Bond. The ADOT construction contract you are bidding likely requires a surety bid bond or other proposal guaranty.This Invitation to Bid can be used for construction procurement. Present your bid in a legible, accessible, and preferably typed format. Include your scope of work 48 to 72 hours before the bid that you are pricing. Construction bids are quite lengthy and should contain as much information as possible regarding the project and what will be required of the contractor. The Bid shall contain evidence of Bidder's authority and qualification to do business in Arizona and the Town.