RCTC, in partnership with Caltrans, proposes to add lanes to Interstate 15 between Route 74 and the Riverside County/San Diego County Line. The project is in the expenditure plan for Measure A, the voter-approved half-cent sales tax measure for transportation improvements in Riverside County. Measure A will fund a portion of the project. However, the expenditure plan assumed 50 percent of all project expenses would be paid for with federal and state transportation funding sources. These sources are currently funded far below historical levels; therefore, until additional funding is available, RCTC cannot proceed with environmental reviews, design, right-of-way acquisition, or construction of the project.