Former US 99 followed a very scenic path over the mountains north of Los Angeles. Follow the Historic Highway 99 Association of California on a journey through the mountains, down the canyons, and beneath Pyramid Lake. Learn what was there before I-5 and what it took to build both roads.
I-5 between Santa Clarita and the San Joaquin Valley over Tejon Pass is known as “The Grapevine” and formerly known as “The Ridge Route”. It is an important corridor in California and has been so since 1915. Travel over the route can be quite treacherous in winter due to both rain and snow. Mudslides, rockfalls, …
Southern California Regional Rocks and Roads
Exploring the highways, geology, history and landscapes of Southern California.