California State Route 161 is a short highway located in the northern part of California. It runs approximately 12 miles, connecting the towns of Dunnigan and Colusa. This route primarily serves local traffic and provides access to agricultural areas in the region. The highway is known for its scenic views of the surrounding farmland and natural landscapes. It intersects with other major routes, including Interstate 5, making it a convenient option for travelers exploring the northern part of the state. California State Route 161 plays a vital role in supporting the local economy and transportation needs.