Redwood Road MPM 2.3

The Redwood Road, MPM 2.3 project consists of 56 feet long soldier pile supported retaining wall at the slide and stitch piles at both ends of the retaining wall in order to prevent future slides and improve the road steep slope stability by installing 5 stich piles on each side of the soldier pile wall and 20 stitch piers over a distance of 40 feet on the north side of the road along the roadway edge. The stitch piers consist of 18-inch diameter piers that are spaced at 24 inches on-center. The stitch piers will be located a few feet from the top of creekbank, just inside the areas that are currently paved. The top of stitch piles are 2 feet below the top of new pavement. The structural steel soldier piles are embedded in 24-inch diameter holes filled with lean concrete. The cast-in-drilled hole piles are spaced at 8 feet on center. Precast Concrete lagging is placed between the soldier piles. A cast in place reinforced concrete cap is placed on top of the soldier piles.