Within the downtown area bounded by Burnside on the North, I-405 on the West and South and the Willamette River on the East, the busses are free . 5th and 6th Aves. are major bus routes. Any bus on 6th Ave. Most bus routes in the Portland area operate through downtown. Drivers do not make change.
Discounted tickets are available at many locations.
Tickets are good on busses and on the MAX with unlimited transfers within a time period from first boarding. Time to or from PSU is a bit over 45 minutes at most times. PSU by Car Parking is at a premium. Street parking is metered and unavailable during much of the day. The CS department has one guest space.