Advanced - Independently applies advanced civil and transportation engineering principles to complex transportation projects, including highway design, construction practices, surveying, preparation or review of plans, specifications, and estimates (PS&E), and project delivery through multiple phases. In addition to maintaining over 20,000 lane miles of state highway and 4,100 bridges, WSDOT leads an award-winning Active Transportation Plan, manages the worlds longest floating bridge, and operates the largest ferry system in the nation!