to the Canby Ferry
OG, I think the bike/ped bridge over the Clackamas River is still closed so to get to Oregon City you need to cut thru Gladstone to 99E to get over the Clackamas River. From OC, you go up the hill (or take the elevator to avoid the climb!) and get on Linn ave. and then Central Point rd. going south -- you can cut west to Canby on Union Hall Rd., then back north to the ferry. Central Point is a pretty nice ride, traffic not too bad the times i've ridden it, at least once you get out of OC. Some rolling hills but no wicked climbs.
From the other direction to get to the ferry, it's over the bridge at OC then south along the river thru west Linn - Pete's Mt. Rd. is a nice ride IMO but it is a really steep climb for nearly 2 miles, then a screamer of a descent to the ferry- I don't know of any other decent way to get to the ferry from this direction...?