Originally Posted by Leisesturm

Yes, the map will tell you what all your options are but it can't tell you which ones are the safest, the most practical, or even the most attractive. If the o.p. has actually made the ride on Interstate then they are in a better position than most to make the decisions. Is there a bike lane? Are there other cyclists making the same choice? A yes, to either of these would eliminate a lot of questions/doubt if it were me.

Commuting is easy for me. I Google the trip. Google defaults to the most direct route. That's good enough for me for a start. I ride the Google route. There isn't a road that I am afraid to use unless it is an interstate or a limited access freeway. Anything else is fair game. Especially if it has a bike lane. Some left turns require finesse. This you learn by riding the route as given by Google. Google has a bike option now. I suspect the results won't differ much from the Bike Portland Map but I find it confusing. I am partially sighted and cannot read street signs. A straightforward, direct, route suits me much better than one that meanders all over the place in an effort to find the least stressful path that encounters a minimum of motorized traffic. YMMV.

H