I remember in the mid-1980's I read that one day the SART would be over 100 miles and span from Big Bear to NPB. How's that going?
Found this on a search dated 2018. Think I will dig in and see what the plans are relative to 2020?
Santa Ana River PARKWAY & OPEN SPACE PLAN Coastal Conservancy
https://scc.ca.gov/files/2018/06/SARPOSP_Plan_FINAL.pdf