WE DO NOT SUBSIDIZE CAR TRAVEL more than any other form of travel!
About 75% of the cost of operating mass transit is subsidized.
MOST of the cost of buying buses & toy rail (light rail cars) is subsidized.
Much of the transit subsidizes are stolen from car user fees/taxes.
See DebunkingPortland.com
Everyone will use that bridge, few will use rail.
I5 is an interstate freeway and should be paid mostly by the Feds. State car tax/fees will be paying the rest.