Interstate 405, commonly known as I-405, is a major freeway in California that runs through the Greater Los Angeles area. It stretches approximately 73 miles, connecting I-5 in the south to I-101 in the north. This highway serves as a vital transportation route for commuters and travelers, facilitating access to various neighborhoods and cities. The freeway is known for its heavy traffic, especially during peak hours, as it connects key areas such as Los Angeles, Santa Monica, and Long Beach. I-405 features multiple lanes in each direction and includes several interchanges with other major highways, enhancing connectivity throughout the region.