CA PRA GOG 104(1), 105(2), & 268(2) Bunker & Mitchell Roads & Alexander Ave/Danes Dr.

This project will consist of roadway resurfacing, restoration, rehabilitation, and reconstruction of approximately 4.2 miles of roadway on CA PRA GOGA 104(1), 105(2) & 268(2) in Marin County California.  Work is included on Bunker, Mitchell, Old Bunker and Field Roads, Alexander Avenue and Danes Drive in the Marin Headlands Area of Golden Gate National Recreation Area.

Principle work items include 20,000 tons of hot asphalt concrete pavement, 37,000 cubic yards of roadway excavation, 17,000 tons of roadway aggregate, and 46,000 square yards of pulverizing.  Additional work includes drainage improvements, construction of two new parking areas to accommodate approximately 240 vehicles, 13,000 square yards of wetland restoration, 1,700 square feet of mechanically stabilized earth wall, 5,500 linear feet of guardrail, 700 cubic yards of gabions, and 500 linear feet of micropiles including construction of a concrete slab over an existing tunnel.  All of the work is occurring in cultural and natural resource sensitive areas.  The contractor will be required to provide a Public Information Officer that will be responsible for coordinating outreach to the public and park partners regarding upcoming work and road closure information.  Temporary traffic control will be required to accommodate vehicles, bicycles, and pedestrians.

It is anticipated that this project will be advertised in late October or early November, 2012.  The contracting range for this project is between $7 million and $12 million.  Construction clearing operations are anticipated to begin in January 2013, with ground disturbing activities starting in April 2013.  This project will be constructed over two seasons and is anticipated to end in the Fall of 2014.