Products are selected by the designer or by the District Project Manager. Caltrans' 12 districts are headquartered in Eureka, Redding, Marysville, Oakland, San Luis Obispo, Fresno, Los Angeles, San Bernardino, Bishop, Stockton, San Diego, and Santa Ana. Headquarters OE writes or approves the Special Provisions for all projects 3. Caltrans advertises project for bid. When projects are finalized, Caltrans advertises the bid notices via hard copy and on the Internet.
Contractors bid on project.
General contractors submit bids to Caltrans. If the contract allows a choice of products, the contractor will usually, of course, select the least expensive product. Contractor constructs project. The contractor who wins the bid purchases the products. Supplier can bid on contract.