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Although SR 1 is a popular route for its scenic beauty, frequent landslides and erosion along the coast have caused several segments to be either closed for lengthy periods for repairs, or re-routed inland.
LandslidesFrequent landslides and erosion along the coast have caused portions of SR 1 to either be closed for long periods of time, or be re-routed entirely. Some of these include:A segment along the coast between Pacifica and Daly City in what is now Thornton Beach was damaged and rendered unusable after a 5.3 magnitude earthquake on March 22, 1957. SR 1 was then eventually re-routed to turn inland to join Interstate 280.The Piedras Blancas Realignment Project plans to re-route the road up to 475 feet (145 m) further inland to avoid the expected coastal erosion from the Piedras Blancas Light Station to the Arroyo de la Cruz Bridge in San Luis Obispo County.[53]Big Rock Mesa landslide in Malibu was one of the worst in state history. A total of 250 homes collapsed, cracked or slid off their foundation with 30 homes being condemned. The state agreed to pay forty million dollars as cutting through the hillside to build Pacific Coast Highway was a contributing cause.[54]The Devil's Slide area has been prone to major landslides. One slide in 1995 caused the road to be closed for five months, while another in 2006 led to a four-month closure.[55] The Tom Lantos Tunnels, named after former U.S. Congressman Tom Lantos, opened in 2013 to bypass the area.[56]In 2011, major reconstruction was completed between Muir Beach and Stinson Beach, including the addition of a 523-foot-long (159 m), 20-foot-high (6.1 m), but mostly buried, retaining wall. This followed a four-month, $25 million reconstruction that repaired damage from a 2007 landslide.[57]A March 2011 landslide in the Big Sur region forced Caltrans to close the highway for several months.[58] A section south of Lucia that is also prone to frequent landslides, known as Pitkins Curve and Rain Rocks, was replaced with a bridge and a covered rock shed.[59]During the winter of 2016–2017, the Big Sur region received more than 60 inches (150 cm) of rain. The road was closed or partially closed due to mudslides and landslides in at least six locations. On February 20, Caltrans declared that the Pfeiffer Canyon Bridge just south of Pfeiffer Big Sur State Park was damaged beyond repair, closing that segment of SR 1 for eight months, and effectively splitting Big Sur in half.[60] Some businesses, cut off from customers and without access to supplies, were forced to close. For some residents, the only means of getting out was via helicopter.[61][62] In March, Caltrans demolished the bridge and began construction of the replacement.[63] The rebuilt bridge opened on October 13, 2017 at a cost of $24 million.[64][65]Another major slide at Mud Creek closed a 30-mile (48 km) stretch of the highway in May 2017.[66] The huge slide at Mud Creek covered about one-third mile (0.54 km) of road with 40 feet (12 m) of dirt and rock. The slide was on a section of the road that was already closed due to smaller slides. The scale of the slide was compared to a very large slide during the winter of 1983–1984 that closed SR 1 for more than a year.[67] A replacement roadway was built over the landslide and opened in July 2018, at a cost of $40 million.[68][69][70][71]After heavy rainfall, a section of the highway at mile marker 30, near Rat Creek in Monterey County, collapsed into the ocean in January 2021.[72]
Is this part of "The Devil's Slide?!?"
Makes me think of I-40 around the TN-NC state line, except there it's usually a rockslide with car-sized boulders that closes the interstate. there was a really big washout a few years ago, think it got both lanes in one spot and just the eastbound in another. Pretty normal for a slide to close at least the westbound lane for wks or months once every few years. They've done a lot to minimize the danger in recent years, but there's only so much that can be done. It's a fun road on the bike, but when you travel it regularly such things are always on your mind. Not sure which would be worse- flying into a giant hole or smacking head on into a wall of giant boulders....
Pretty sure Big Sur, the part that breaks off from Hwy 1 and follows the actual coast line , off limits to motos (except to residents of BS), so no loss to us poor folks. Can't look at the link, so wonder the actual location.:-)
Plus, there was loose gravel in the center of the road going around turns. That can really put a crimp in your riding.[/url]
Not sure what you're talking about. I camp there often (when Hwy 1 is open) The small roads are to campgrounds, I've always ridden to them. The only part that prohibits motorcycles is the 17 Mile Drive in Carmel, I suspect due to our Harley friends and loud pipes through Pebble Beach, but this is not close to the road closure. I don't understand why Cal Trans or DOT, inspect Hwy 1 more often. I know they're always working on it, but can't they predict where it's going to give way?
I ride 101 to 1 from o.c. to Monterey a couple of times a year. On my last trip I pulled in to take the 17 mile drive. When I stopped at the gate I was told by the guard that no motorcycle’s we’re allowed. I asked if I could take his car, he was not amused!
I guess it is too difficult to make a rule about dB levels instead of wiping out an entire mode of transportation.