About: California State Route 299

State Route 299 (SR 299) is an east–west state highway in the state of California that runs across the northern part of the state. At 305.777 miles (492.100 km), it is the third longest California state highway (after Route 1 and Route 99). Route 299 begins at US 101 at the northern edge of Arcata and continues in an easterly direction through to the Nevada state line. Between Arcata and Redding, Route 299 intersects with State Route 96, and is briefly co-signed with State Route 3. In Redding, it intersects with State Route 273, State Route 44, and Interstate 5. East of Redding, it intersects with State Route 89, and a section is co-signed with State Route 139 before reaching Alturas. It is then co-signed with U.S. Route 395 northeast of Alturas, and then runs east toward the border with N