Are they planning on making it 4 lanes all the way from US 101 to I-5?
The master plan for 20 inside district 3 is at http://www.dot.ca.gov/dist3/departments/planning/tcr/DraftSR20TCR03-09-09.pdf (http://www.dot.ca.gov/dist3/departments/planning/tcr/DraftSR20TCR03-09-09.pdf)
Inside district 1, the master plan is only available west of 101 at http://www.dot.ca.gov/dist1/d1transplan/r20_west.pdf (http://www.dot.ca.gov/dist1/d1transplan/r20_west.pdf)
Thanks!