U.S. Route 299, is a state highway in the US state of California. It runs across the northern area of the state. It runs from Arcata on the Pacific Ocean to the limit with Nevada. Among Arcata & Redding, Route 299 junctions by State Route 96 & is briefly co-signed with State Route 3. In Redding, it intersects with State Route 273 & State Route 44 & a small section is co-signed with Interstate 5.