For the safety and benefit of the traveling public and adjoining users, ADOT and Rosemont Copper have agreed to participate in the design, construction, and maintenance of roadway improvements on State Route 83. Roadway improvements will consist of three-inch asphalt concrete overlay, guardrail reconstruction, pavement markings, and shoulder build-up from approximately mile post 47.1 (aka primary access road project terminus) north to mile post 58.5, and the addition of bus pullouts at mile post 47.9, 49.2, and 52. It is anticipated that no new right-of-way will be required.
Arizona Department of Transportation. 2012a. Rosemont Copper Project Draft Environmental Impact Statement Proposed SR 83 Improvements Mile Post 58.5–47.1. Letter from Mick Hont, P.E., Acting Tucson District Engineer (Operations), Arizona Department of Transportation, to Walt Keyes, Road Manager, Coronado National Forest. Phoenix, AZ: Arizona Department of Transportation. September 19.