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What is the Grapevine Highway: Understanding the 2026 Reality of California’s Interstate 5 Corridor

"The Grapevine Highway—formally known as the Tejon Pass segment of Interstate 5—is a critical mountain pass located in Southern California, connecting the San Joaquin Valley to the Los Angeles Basin. This high-altitude passage reaches an elevation of approximately 4,144 feet and serves as the primary arterial route for commercial, agricultural, and passenger transit between Northern and Southern California. Geographic and Engineering Significance of the Tejon Pass The term Grapevine Highway refers to the 6-mile stretch of Interstate 5 that winds through the steep, winding terrain of the Tehachapi Mountains. Known for its notorious grade, the p..."

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