Route 4 is Open Home › Forums › BigTrees Talk › Route 4 is Open Tagged: Route 4 This topic has 0 replies, 1 voice, and was last updated 7 years, 6 months ago by JohnM. Viewing 1 post (of 1 total) Author Posts June 30, 2017 at 4:31 pm #5500 JohnMParticipant Caltrans opened Rt. 4 today at 1:00 PM. Drove to Cape Horn and the road was in very good condition. Author Posts Viewing 1 post (of 1 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In