California State Route 198

California State Route 198 is a state highway that traverses central California from the Salinas Valley and U.S. Route 101 corridor near San Lucas eastward through the San Joaquin Valley and into the western entrance of Kings Canyon National Park at General Grant Grove. The route connects agricultural centers, recreational destinations, and regional corridors including links to California State Route 25, Interstate 5, and California State Route 99. It serves as a primary arterial for communities such as Coalinga, Lemoore, and Visalia while providing access to natural attractions like Sequoia National Forest, Kings Canyon, and the Sierra Nevada.

Route description

Route 198 begins near San Lucas at a junction with U.S. Route 101 and proceeds east through the Salinas Valley toward Coalinga, intersecting with California State Route 25 and passing near the San Andreas Fault zone and the Temblor Range. East of Coalinga, the roadway crosses agricultural plains of the San Joaquin Valley and connects with Interstate 5 before continuing to Lemoore and then toward Hanford, where it meets State Route 43 and State Route 41. The highway proceeds to Visalia, where it becomes a divided freeway and intersects California State Route 63 and State Route 99 near the Tulare County Courthouse area. East of Visalia, the route ascends into the western foothills of the Sierra Nevada and enters the Sequoia National Forest and Kings Canyon National Park, terminating near General Grant Grove and providing access to groves of Giant Sequoia and trailheads for General Grant Tree and Kings Canyon.

History

The corridor of the route follows historic wagon roads and stage routes used during the California Gold Rush era and later improved as part of early 20th‑century state highway system expansions influenced by legislators and agencies such as the California State Automobile Association and the California Highway Commission. In the 1934 state highway renumbering, the corridor received designation and subsequent improvements accelerated during the Great Depression with federal programs like the Works Progress Administration aiding local construction. Mid‑20th century projects linked the highway to U.S. 101 and modernized segments near Coalinga and Visalia following standards promoted by the American Association of State Highway Officials. Construction campaigns in the postwar era tied the route into the national Interstate Highway System network via an interchange with Interstate 5 and improved connections to State Route 99. Environmental reviews and land management coordination with agencies such as the United States Forest Service and the National Park Service shaped the park‑bound eastern terminus and access to Sequoia National Forest and Kings Canyon National Park.

Major intersections

The highway intersects multiple major corridors and facilities that serve regional and national travel: - Junction with U.S. 101 near San Lucas - Intersection with California State Route 25 near the Temblor Range - Interchange with Interstate 5 serving north–south freight and passenger movement - Crossings and connections with California State Route 33 and California State Route 41 near Coalinga and Hanford - Concurrency and interchanges with California State Route 99 and California State Route 63 in the Visalia area - Terminus access to Sequoia National Forest and Kings Canyon National Park near General Grant Grove

Future and planned improvements

Planned projects have focused on capacity, safety, and environmental compliance, coordinated with agencies such as the California Department of Transportation and regional planning bodies like the Fresno Council of Governments and the Tulare County Association of Governments. Proposed improvements include widening and interchange upgrades near Visalia to address commuter traffic linked to Naval Air Station Lemoore and regional freight flows to Port of Oakland and Port of Los Angeles and Long Beach. Environmental impact assessments have involved consultations with the United States Forest Service and the National Park Service for segments approaching Kings Canyon National Park to protect habitats associated with Giant Sequoia and watersheds that feed into the San Joaquin River and its tributaries. Funding sources considered include state transportation bonds supported by the California State Legislature and federal grants administered through the Federal Highway Administration.

Special routes and designations

Certain segments of the highway receive special designations and carry business or scenic designations administered in cooperation with entities like the California State Legislature and the National Park Service. Portions near Visalia function as a principal arterial and business route accommodating access to the Tulare County Courthouse and downtown districts. The eastern approach through the Sequoia National Forest has been recognized for scenic and recreational value, aligning with programs such as the National Scenic Byways Program and state scenic highway designations advocated by preservation organizations including the Sierra Club.

Category:State highways in California