The only means of transportation that will be reliable will be the copters.
Everything WEST of the Cascades will be damaged, some beyound repair, and everything along the coast will be gone.
The interstate will have nearly no bridges standing. Every single public service will cease to exsist in most places.
They now understand that the effects will be devestating well onshore-even to Portland, as the effects will be much closer than originally thought.
In short, you are on your own for quite some time.
When that fault slips, and it will, it will be a mag 9+ and will last for at least 5 to 6 minutes. The latest underwater studies have found that the fault has bulged the land up into the Cascades...some feet in many cases. This is a subduction fault and not like the sideslip faults like in S California. The same as the Japan earthquake and the Boxing day earthquake in SE Asian.
One blessing, there’s plenty of running water.
Light weight mountain bikes will prove highly desirable. Can be carried across the worst debris, ridden on remains of roadways, taken cross country as terrain allows.