The document outlines the process for proposing and constructing the Kapiti Coast Expressway as part of the Wellington Northern Corridor. It discusses how the expressway was listed as a Road of National Significance, and the steps involved in designating the land, obtaining resource consents, protecting heritage sites, acquiring land, and establishing it as a limited access road. These steps include issuing a Notice of Requirement, public consultation, recommendations by local authorities, potential appeals to the Environment Court, and compensation for acquired or impacted private land. The multi-year process will require navigating the Resource Management Act, Public Works Act, Historic Places Act, and Government Roading Powers Act.