Sharpen up your pencils and plan to spend some time on this one as it is pretty hard. For those who just can't solve it, I have included a hint that should make it a little easier.
Final result is N 45 42.ABC W 122 37.DEF.
Note: On some GPS units, the coordinates may place you in the middle of the road. If so, move to the north side.
You can validate your puzzle solution with certitude.