The project is funded by federal, state, regional and local allocations (including bridge tolls), dedicated sales tax revenues, and fares. The capital cost of track rehabilitation for the full 70-mile line, signals, railcars, etc. was estimated to be about $450 million in 2008 ($ adjusted for inflation). By 2019, development of the line from Airport Boulevard in Santa Rosa to the San Rafael Transit Center totaled $448 million and the estimated cost to complete the legislated system had increased to $944 million.