The Ridge Route, officially the Castaic–Tejon Route, was a two-lane highway between Los Angeles County and Kern County, California. Opened in 1915 and paved with concrete between 1917 and 1921, the road was the first paved highway directly linking the Los Angeles Basin with the San Joaquin Valley (southern Central Valley) over the Tejon Pass and the rugged Sierra Pelona Mountains ridge south of Gorman. Much of the old road runs through the Angeles National Forest, and passes many historical landmarks, including the National Forest Inn, Reservoir Summit, Kelly's Half Way Inn, Tumble Inn, and Sandberg's Summit Hotel. North of the forest, the Ridge Route passed through Deadman's Curve before ending at Grapevine. The road was bypassed by the three-lane Ridge Route Alternate, then U.S. Route 99 (US 99), to handle increased traffic and remove curves; the Alternate in Los Angeles County was completed in 1933, and Kern County line to Grapevine in 1936. The four-lane US 99 was completed in 1953 and replaced by an eight-lane freeway, Interstate 5 (I-5) in 1960-70. The portion of the road in the Angeles National Forest was added to the National Register of Historic Places in 1997, by the efforts of Harrison Scott. Much of the road has been closed by the U.S. Forest Service; other remnants are used by local traffic. Route description The Ridge Route was officially the Castaic–Tejon Route. The official limits of the Ridge Route, as built in the 1910s, were SR 126 at Castaic Junction and the bottom of the grade at Grapevine. Until 1930 the road from San Fernando to Castaic Junction ran through the Newhall Tunnel at San Fernando Pass and along San Fernando Road, Magic Mountain Parkway (both part of SR 126 until the early 2000s) and Feedmill Road to a former bridge over the Santa Clara River. A 1930 bypass of the tunnel and Newhall through Weldon Canyon is now part of The Old Road. From Castaic Junction north to Castaic the Ridge Route has been largely buried by the Ridge Route Alternate and Interstate 5. At Castaic the Ridge Route Alternate turned northwest from the old road, now the intersection of Castaic Road and Neely Street. The first piece of Ridge Route Road out of Castaic was realigned as recently as the late 1990s when the North Lake housing development was built. The road begins to climb after passing North Lake; a portion