This is a Caltrans project on HWY 101 in Novato. This corridor is very congested with traffic, and currently GCC is constructing 4 miles of frontage roads in order for the future highway widening to take place. GCC is also widening an existing bridge, constructing new on and off ramps for both north and southbound directions.
Some project features include:
148,000 CY of roadway excavation, with an additional 39,500 CY of unsuitable material excavation.
97,000 CY of import
4 retaining walls
17,000 tons of base rock
28,500 tons of asphalt (approx 4 miles of frontage roads)
1,238 CY of box culverts
Over 5,000′ of storm drain pipe (18″ — 36″)
Over 18,000′ of underdrain pipe (4″ — 8″)
11,000′ of new 30″ and 42″ WSP (This is new steel pipe for the North Marin Water District).
Project has 520 working days. Currently GCC is 70% done with the project and has only used 40% of the allotted time.