Douglas County Bids Online (DemandStar) is a site that displays the management of bids/proposals for county projects.Phone Number(s): 1-800-711-1712Website: http://www.demandstar.com/supplier/bids/agency_inc/bid_list.asp?f=search&mi=1545...Email Address: supplierservices@onviausa.comStreet Address: 509 Olive Way, Suite 400, Seattle, WA 98101, USA