Freeways increase automobile trips and increases the average automobile trip length. As with computer memory, usage increases to take advantage of any increase in capacity. Congestion returns as before. With more automobiles trips and an increase in miles traveled per average trip, air quality will go down. 87, enacted in 1985 by a now-defunct entity.
Time is important.
It would be harder to repeal after road construction is complete. I think the best approach is by getting the San Jose City Council to vote to request Caltrans to repeal their prohibition. While the FEIS did not mention bicycles north of downtown, it will be important to prevent Caltrans from imposing bicycle prohibitions on Rt. 87 north of the city hall, even when the road here becomes a freeway. Currently, this roadway is under city jurisdiction and allows bicycles.