U.S. Route 101 is the major highway through the Little Lake Valley, passing just east of the Willits city limits, connecting Eureka to the north and San Francisco to the south. State Route 20 forks off of US 101 at a point just south of Willits, follows South Main Street and then heads west, running parallel to and several miles south of the Skunk Train's route, to Fort Bragg. To reduce traffic congestion in the city, especially on all of Main Street, the Willits Bypass project opened to traffic on November 3, 2016, despite the controversy related to its route through protected wetlands.