Far too often contractors become part of paving projects after the contract award. By then it's too late for an important contribution they might have made to the job. It's best to have a working relationship between the contractor and the designer long before the project is ready for bidding.
DESIGN OPTIONS TO BE EXAMINED
When designing a pavement, the designer must consider: the design life for the pavement; pavement thickness; paved shoulders tied to the main-line pavement or unpaved shoulders; nonreinforced or reinforced pavement with or without dowels; stabilized or nonstabilized subbase; design for ramps, entrance lanes, and exit lanes. To make decisions, the designer needs current information adapted to the project. Contractors often know about job conditions, materials available, and equipment capabilities. They can suggest ideas to keep the job simple and economical. Also, the designer gains knowledgeable, interested bidders for the project.