interchanges since the 1990s don't display these names, using instead the highway number, direction, and control city. A freeway "name" may refer to portions of two or more differently numbered routes; for example, the Ventura Freeway consists of portions of U.S. Route 101 and State Route 134, and the San Diego Freeway consists of portions of Interstate 5 and the full length of Interstate 405. When Southern California freeways were built in the 1940s and early 1950s, local common usage was primarily the freeway name preceded by the definite article. It took several decades for Southern California locals to start to also commonly refer to the freeways with the numerical designations, but the usage of the definite article persisted. For example, the San Gabriel River Freeway evolved into "the 605 Freeway" and then shortened to "the 605". Named interchanges Four Level (Bill Keene Memorial): Dosan Ahn Chang Ho Memorial: East Los Angeles: Hollywood Split (Bruce T. Hinman Memorial): Judge Harry Pregerson: El Toro Y: Southern junction of Kellogg: Orange Crush: Newhall Pass (Clarence Wayne Dean Memorial): Glendora Curve: Jack Schrade (Mission Valley Viaduct): Marilyn Jorgenson Reece Memorial Interchange: Other named features Downtown Slot: where Highway 101 passes through a trench in Downtown Los Angeles. South Bay Curve: where Interstate 405 bends from north–south to east–west in Torrance Sepulveda Pass: Interstate 405 just south of U.S. Route 101 near the J. Paul Getty Museum. Cahuenga Pass: the Hollywood Freeway just south of the interchange with the Ventura Freeway Figueroa Street Tunnels: the northbound lanes of the Pasadena Freeway between the Four Level Interchange and the interchange with the Golden State Freeway Glendora Curve: the transition of the northbound 57 Orange Freeway to the westbound 210 Foothill Freeway; or the eastbound 210 transition to the southbound 57. Formerly part of Interstate 210 before the completion of the newer section of the Foothill Freeway in 2003. Comparisons and firsts First freeway in California (Arroyo Seco Parkway linking Pasadena and Los Angeles) First stack interchange (Four Level Interchange in downtown Los Angeles) First grade-separated HOV lanes First fully automated tollway system (91 Express Lanes in northern Orange County) The Southern California area has fewer lane-miles per capita than most large metropolitan areas in the United States, ranking 31st of the top 39. As of 1999, Greater Los Angeles had 0.419 lane-miles per 1,000 people, only slightly more than Greater New York City and fewer