Diablo Dam Access Road Crib Wall Replacement

Description

Project Description: This Project consists of the following elements of Work: Mobilization/demobilizationProject SubmittalsTraffic Control Plan, barriers, and devicesInstall BMPsRemove and reinstall existing jersey barriersBreak up and remove select large bouldersShaft constructionInstall temporary wooden laggingInstall new soldier pile wall (steel H columns and permanent concrete lagging)Install backfill behind new wallRemove existing wooden log crib wall (approximately 12’ x 40’)Excavation/removal in front of proposed wallProvide and install crib wall veneerRemove asphalt pavement and 12” of subgradeRepave access roadway pavement from State Route 20 to the Diablo Dam in the same location/elevation as existing pavementEngineer's Estimate: $1.1 to $1.3 Million (before sales tax)Project Location: This Project is located along the Diablo Dam Access Road, between State Route 20 Milepost 127.8 (North Cascade Highway) and the Diablo Dam.  Diablo Dam is located approximately 130 miles north of Seattle in Whatcom County.