The Riverside Freeway, officially known as California State Route 91, is a major highway in Southern California. It runs east-west, connecting the cities of Riverside and Los Angeles. The freeway is an essential route for commuters and travelers, facilitating access to various neighborhoods and attractions in the region. The Riverside Freeway features multiple lanes in each direction and includes interchanges with other significant highways, such as Interstate 15 and Interstate 605. It is known for its scenic views, particularly as it passes through the Santa Ana River area, making it a vital transportation corridor in the state.