A lot of people route through Riverview Cemetary
http://bikeportland.org/2006/04/26/s...emetery-route/
As far as I know, the route is still open - just watch your speed through the cemetary and it will take you practically to the foot of the Sellwood bridge. (though you might need to ride around a bit to find that particular exit)
Best way to Riverview is to take Barbur or wherever to Terwilliger and take that up to Taylor's Ferry to the cemetary entrance.