Likewise, the freeway replacement for State Route 180 in Fresno was initially referred to as State Route 180S. For example, an expressway replacement for State Route 86 between approximately three miles north of the Imperial/ Riverside County line and Interstate 10 east of Indio was initially signed as State Route 86S until it was eventually transferred to SR 86. Some new alignments are considered supplemental and have a suffix of S. For example, State Route 14U is an old alignment of State Route 14 whose control has not yet been transferred to the City of Santa Clarita. A route or sections of a route may also be considered unrelinquished - a new alignment has been built, or the legislative definition has changed to omit the section, but the state still owns the roadway - and are officially Route XU. The state may also delete a highway completely and turn over an entire state route to local control.īusiness routes are not maintained by the state unless they are also assigned legislative route numbers.
If the relinquished segment is in the middle of the highway's route, the local jurisdiction is usually required to install and maintain signs directing drivers to the continuation of that highway they are not generally required to do so if the relinquishment effectively truncates the highway at one end, or is done as part of the process to re-route a highway. The state may relinquish segments of highways and turn them over to local control. On the other hand, some short routes are instead signed as parts of other routes - for instance, Route 112 and Route 260 are signed as part of the longer State Route 61, and Route 51 is part of Interstate 80 Business.Ĭoncurrences are not explicitly codified in the Streets and Highways Code such highway segments are listed on only one of the corresponding legislative route numbers - for example, the I-80/ I-580 concurrency, known as the Eastshore Freeway, only falls under the Route 80 description in the highway code while the definition of Route 580 is broken into non-contiguous segments. For example, Interstate 5 is listed as "Route 5" in the code. Since July 1 of 1964, the majority of legislative route numbers, those defined in the Streets and Highways Code, match the sign route numbers. Overview Route shield signs at the intersection of SR 123 and SR 13 in BerkeleyĬalifornia's highway system is governed pursuant to Division 1 of the California Streets and Highways Code, which is one of the 29 California Codes enacted by the state legislature. The California Highway Patrol (CHP) is tasked with patrolling all state highways to enforce traffic laws. Under the code, the state assigns a unique Route X to each highway, and does not differentiate between state, US, or Interstate highways. United States Numbered Highways are labeled US X, and Interstate Highways are Interstate X. Most of these are numbered in a statewide system, and are known as State Route X (abbreviated SR X). state of California is a network of highways that are owned and maintained by the California Department of Transportation (Caltrans).Įach highway is assigned a Route (officially State Highway Route ) number in the Streets and Highways Code (Sections 300–635). All classes of state-numbered highways are generally state-maintained.