Update: Highway One is now 100% open throughout Monterey County. Read this post for more information. Good news from Caltrans! Beginning this Friday, visitors can enjoy unimpeded access to Big Sur on Highway One from both the north and the south. Highway One will open at Alder Creek, just north of the Monterey County line, by Friday, June 10. As reported previously, Highway One has reopened at Rocky Creek with alternating one-way traffic rules in effect. Are you ready for your road trip to Big Sur? What's your must-see spot in Big Sur?