(Milwaukie, OR)  --  A woman is being treated for serious injuries after being hit by a car while on a sidewalk near Milwaukie.  Authorities say the incident happened around 5:00 p.m. yesterday as the woman was walking along Oregon Route 99E, a mile south of Milwaukie.  Police say the car traveled off the roadway and onto the sidewalk, hitting the woman.  No names have been released.