The route begins southwest of Bakersfield at the SR 119 junction as Enos Lane. It travels north on Enos Lane through rural farmland and a local raceway as SR 43 quickly crosses I-5. It continues north for a few miles before reaching SR 58. Then, after a mile after intersecting 7th Standard Road, the road name changes to Beech Ave. At the intersection of Los Angeles St., Beech Ave., and Santa Fe Way, SR 43 angles northwest, running parallel to the BNSF tracks. At this point the name changes to Central Valley Highway. Before intersecting Lerdo Highway, which serves Minter Field, the road expands to four lanes. As SR 43 goes through Shafter, the highway continues as a four-lane divided highway until reaching Wasco at Poso Dr. where it returns to two lanes. The name now changes to F Street. After intersecting SR 46, SR 43 briefly travels east along SR 46 before turning north regaining the Central Valley Highway designation. At Pond St, the route turns northwest. It continues as the route goes through Corcoran, intersecting the western terminus of SR 137 (Whitney Ave.) North of Corcoran, the route turns north splitting off from the BNSF Railway tracks. It continues north through Hanford where it reaches the SR 198 interchange before reaching Selma. SR 43 terminates at SR 99 near the intersection of Highland Avenue and Floral Avenue.
State Route 43 is the combination of two different legislative routes. The northern segment was adopted as a state route in 1933 as Legislative Route 135. It was defined to run from LRN 10 (currently SR 198) near Hanford to LRN 129 (currently SR 65) near Ducor via Corcoran and Earilmart. Originally, the route started in Ducor and traveled west on Ave. 65. It went through Earilmart to Central Valley Highway, where it joins the current route. In 1951, the route and terminus was changed from Ducor to the junction of LRN 33 (currently SR 46) and LRN 139 (current routing of SR 43) in Wasco, eliminating the route along Ave. 56.
In 1959, a second disconnected segment was added that ran from the Kings County Line to LRN 4 (currently SR 99) near Selma.[5] The southern segment was adopted as a state route in 1933 as Legislative Route 139. It was defined to run from LRN 140 (currently SR 119) to LRN 33 in Wasco.[6]
In 1964, all of the state routes were renumbered. LRN 135 and LRN 139 were combined, and all gaps were filled to make one continuous route from SR 119 to SR 99 near Selma. This route was named and signed as SR 43.[7]
Future
The Kings County Association of Governments has plans to improve the state highways within the county. Developers are interested in building distribution warehouses in Kings County because of its strategic location midway between the Los Angeles and San Francisco Bay areas, but they are currently turned off by the lack of freeway access. For SR 43, the plan is to upgrade the entire segment within the county to a freeway. However, Kings County voters have shown little interest in passing any transportation taxes to fund these projects.[8]
Major intersections
Except where prefixed with a letter, postmiles were measured on the road as it was in 1964, based on the alignment that existed at the time, and do not necessarily reflect current mileage. R reflects a realignment in the route since then, M indicates a second realignment, L refers to an overlap due to a correction or change, and T indicates postmiles classified as temporary (for a full list of prefixes, see California postmile § Official postmile definitions).[9] Segments that remain unconstructed or have been relinquished to local control may be omitted. The numbers reset at county lines; the start and end postmiles in each county are given in the county column.
^ abCalifornia Department of Transportation (July 2007). "Log of Bridges on State Highways". Sacramento: California Department of Transportation.
^"Article 2 of Chapter 2 of Division 1". California Streets and Highways Code. Sacramento: California Office of Legislative Counsel. Retrieved February 6, 2019.
^Federal Highway Administration (March 25, 2015). National Highway System: California (South)(PDF) (Map). Scale not given. Washington, DC: Federal Highway Administration. Retrieved October 15, 2017.
^Natzke, Stefan; Neathery, Mike & Adderly, Kevin (June 20, 2012). "What is the National Highway System?". National Highway System. Washington, DC: Federal Highway Administration. Retrieved July 1, 2012.
^ abCalifornia Department of Transportation. "State Truck Route List". Sacramento: California Department of Transportation. Archived from the original(XLS file) on June 30, 2015. Retrieved June 30, 2015.
SR 119 near Taft
SR 99 in Selma
