Authorizes a transportation benefit district to impose a sales and use tax for a period exceeding ten years if the transportation benefit district is located in a county that borders another state and has a population of more than four hundred thousand, and a portion of the sales tax is used to fund initial construction on a highway of statewide significance within the county.

Declares the tax imposed and collected under chapters 82.08 and 82.12 RCW, less any credits allowed under chapter 82.14 RCW, on initial construction for a highway of statewide significance to be constructed by a transportation benefit district in a county that borders another state and has a population of more than four hundred thousand, must be transferred to the highway project to defray the costs or pay debt service on that project. In the case of a toll project, this transfer or credit must be used to lower the overall cost of the project and thereby the corresponding tolls.