The Ridge Route crosses the West Branch California Aqueduct with SR 138, splitting to the northwest on Gorman Post Road. It rejoins the path of I-5 at Gorman, and, from Gorman to the end at Grapevine, most of the old road has been covered by the Ridge Route Alternate or I-5. The path of the Ridge Route is now named Peace Valley Road and Lebec Road, passing over Tejon Pass and past Lebec and Fort Tejon. Past Fort Tejon the route descends through Grapevine Canyon to Grapevine (named for grapevines in the area). The best-known curve on the road, Deadman's Curve or Death Curve is visible from Digier Road on the west side of I-5. The next part of the old road that still exists is near the bottom of the grade, where a number of curves brought the road down to Grapevine. The original plan was to build the road nearer to the center of the canyon, but a March 1914 flood destroyed the work, and the grading was redone higher up. Deadman's Curve and the Grapevine loops were both bypassed by the Ridge Route Alternate, which was built directly over most of the old road in this area. At Grapevine the land flattens out, and the road north of Grapevine was the longest straight section of road in the state——in 1926. Most of this road lies under I-5 and SR 99, but the southernmost piece in Grapevine was bypassed by the Alternate west of it, and is now between southbound and northbound lanes of I-5.