Santa Monica Mountains National Recreation Area
Overall administration is by the National Park Service, coordinating with state, county and university agencies. The Santa Monica Mountains Recreation Area preserves one of the best examples of a Mediterranean climate ecosystem in the world and it protects one of the highest densities of archaeological resources in any mountain range in the world. The Santa Monica Mountains NRA contains 156,671 acres in the Santa Monica Mountains of the Transverse Ranges between the Pacific Ocean and inland valleys and its southeastern slopes are part of the headwaters of the Los Angeles River. In size the Santa Monica Mountains National Recreation Area is the largest urban park in the United States. Besides geologic forces, people who inhabited the area in the past have been ones to affect the land, there were different reasons for people to come into the area. Some came to live and others to work the land, the first groups to live in the mountains were the Native American tribes called the Chumash and the Tongva who lived here for thousands of years.
Then came the Spanish Explorers and Homesteaders from other areas of the country, the Homesteaders brought new ideas and cultures that shaped the landscape and mindset of the area, and California overall. Up to this day, people continue to live, places such as Paramount Ranch, Solstice Canyon, and Rancho Sierra Vista/ Satwiwa still have that history that has been left behind by people in the past. The past stories from people are discovered through photographs, letters. Santa Monica Mountains National Recreation Area strives to make sure the collections, the first area in the Santa Monica Mountains set aside for public use was Griffith Park which was donated to the city of Los Angeles by Griffith J. Griffith in 1896. During the first decade of the century, Frederick H. Rindge made several attempts to create a forest reserve in the Santa Monica Mountains. These reserves were precursors to national forests, in 1902 California’s State Mining Bureau examined the area being considered for the establishment of a forest reserve.
The resulting report was sent to Washington where the proposal for a reserve was denied, in 1907 an application was submitted to the Secretary of the Interior requesting that at least 70,000 acres in the mountains be designated a forest reserve. This time state mineralogist Lewis E. Aubury opposed the venture and he wrote the L. A. C. and endeavor to ascertain his views on the subject, and further protest against the creation of this proposed reserve”. Days the U. S. Limestone deposits were discovered in the mountains behind Pacific Palisades in 1925 which led to a battle between wealthy home owners of the area and land developers. The quarry site was in Traylor Canyon, three miles inland from the sea, between Santa Ynez and Temescal Canyons. Alphonzo Bell, Sr. was the real estate developer behind the scheme while local opposition was led by Sylvia Morrison. After much criticism of his plan, Bell offered a new proposal
Border Field State Park
Border Field State Park is a state park of California, United States, containing beach and coastal habitat on the Mexico–United States border. The park is within the city limits of Imperial Beach in San Diego County and it is the southernmost point in the state of California. Immediately adjacent is the monument marking the Initial Point of Boundary Between U. S. the Treaty of Guadalupe Hidalgo was concluded on February 2,1848, officially ending the war between the United States and Mexico. It provided that the new border between the two countries be established by a joint United States and Mexican Boundary Survey. The commission began its survey at Border Field, the Tijuana River National Estuarine Research Reserve contains much of Border Field State Park and is an important wildlife habitat. The salt and freshwater marshes give refuge to migrating waterfowl and resident wading birds, such as black-necked stilt, American avocet, green-winged teal, American wigeon, the park offers hiking, horse trails, surf fishing and birding.
For fiscal year 2014-1561,799 people visited the Border Field State Park, small portions of the park often become flooded and are inaccessible to the public. New border fences have taken small portions of the park away, abandoned & Little-Known Airfields, California - Southern San Diego area
Redwood National and State Parks
The Redwood National and State Parks are old-growth temperate rainforests located in the United States, along the coast of northern California. Comprising Redwood National Park and Californias Del Norte Coast, Jedediah Smith, and Prairie Creek Redwoods State Parks, the combined RNSP contain 139,000 acres. Located entirely within Del Norte and Humboldt Counties, the four parks, protect 45% of all remaining coast redwood old-growth forests and these trees are the tallest and one of the most massive tree species on Earth. In addition to the forests, the parks preserve other indigenous flora, grassland prairie, cultural resources, portions of rivers and other streams. In 1850, old-growth redwood forest covered more than 2,000,000 acres of the California coast, the northern portion of that area, originally inhabited by Native Americans, attracted many lumbermen and others turned gold miners when a minor gold rush brought them to the region. Failing in efforts to strike it rich in gold, these men turned toward harvesting the giant trees for booming development in San Francisco, after many decades of unrestricted clear-cut logging, serious efforts toward conservation began.
Redwood National Park was created in 1968, by which time nearly 90% of the redwood trees had been logged. The ecosystem of the RNSP preserves a number of threatened species such as the tidewater goby, Chinook salmon, northern spotted owl. Modern day native groups such as the Yurok, Karok and Wiyot all have ties to the region. Archaeological study shows they arrived in the area as far back as 3,000 years ago, an 1852 census determined that the Yurok were the most numerous, with 55 villages and an estimated population of 2,500. They used the abundant redwood, which with its grain was easily split into planks, as a building material for boats, houses. For buildings, the planks would be erected side by side in a trench, with the upper portions bound with leather strapping. Redwood boards were used to form a sloping roof. Previous to Jedediah Smith in 1828, no other explorer of European descent is known to have investigated the inland region away from the immediate coast. The discovery of gold along the Trinity River in 1850 led to a secondary rush in California.
This brought miners into the area and many stayed on at the coast after failing to strike it rich and this quickly led to conflicts wherein native peoples were placed under great strain, if not forcibly removed or massacred. By 1895, only one third of the Yurok in one group of villages remained, by 1919, the miners logged redwoods for building, when this minor gold rush ended, some of them turned again to logging, cutting down the giant redwood trees. Representative John E. Raker, of California, became the first politician to introduce legislation for the creation of a national park
Cabrillo National Monument
Cabrillo National Monument is at the southern tip of the Point Loma Peninsula in San Diego, California. It commemorates the landing of Juan Rodríguez Cabrillo at San Diego Bay on September 28,1542 and this event marked the first time a European expedition had set foot on what became the West Coast of the United States. The site was designated as California Historical Landmark #56 in 1932, as with all historical units of the National Park Service, Cabrillo was listed on the National Register of Historic Places on October 15,1966. The annual Cabrillo Festival Open House is held on a Sunday each October and it commemorates Cabrillo with a reenactment of his landing at Ballast Point, in San Diego Bay. The park offers a view of San Diegos harbor and skyline, as well as Coronado, on clear days, a wide expanse of the Pacific Ocean and Mexicos Coronado Islands are visible. A visitor center screens a film about Cabrillos voyage and has exhibits about the expedition, the Old Point Loma Lighthouse is the highest point in the park and has been a San Diego icon since 1855.
The lighthouse was closed in 1891, and a new one opened at an elevation, because fog. The old lighthouse is now a museum, and visitors may enter it, the area encompassed by the national monument includes various former military installations, such as coastal artillery batteries, built to protect the harbor of San Diego from enemy warships. Many of these installations can be seen walking around the area. A former army building hosts an exhibit that tells the story of history at Point Loma. The area near the monument entrance was used for gliding activities in 1929-1935. Even Charles Lindbergh soared in a Bowlus sailplane along the cliffs of Point Loma in 1930, markers for these accomplishments can be found near the entrance, and the site is recognized as a National Soaring Landmark by the National Soaring Museum. On October 14,1913, by proclamation, Woodrow Wilson reserved 0.5 acres of Fort Rosecrans for The Order of Panama. To construct a statue of Juan Rodriguez Cabrillo. In 1939 the Portuguese government commissioned a statue of Cabrillo.
The sandstone statue, executed by sculptor Alvaro de Bree, is 14 feet tall, the statue was intended for the Golden Gate International Exposition in San Francisco but arrived too late and was stored in an Oakland, California garage. Then-State Senator Ed Fletcher managed to obtain the statue in 1940 over the objections of Bay Area officials and it was stored for several years on the grounds of the Naval Training Center San Diego, out of public view, and was finally installed at Cabrillo Monument in 1949. The sandstone statue suffered severe weathering because of its position and was replaced in 1988 by a replica made of limestone
San Francisco Maritime National Historical Park
The San Francisco Maritime National Historical Park is located in San Francisco, United States. The park includes a fleet of vessels, a visitor center, a maritime museum. The park is referred to as the San Francisco Maritime Museum. Todays San Francisco Maritime National Historical Park was authorized in 1988, the park incorporates the Aquatic Park Historic District, bounded by Van Ness Avenue, Polk Street, and Hyde Street. The historic fleet of the San Francisco Maritime National Historical Park is moored at the parks Hyde Street Pier, the fleet consists of the following major vessels, Balclutha, an 1886 built square rigged sailing ship. Eureka, an 1890 built steam ferryboat, alma, an 1891 built scow schooner. Hercules, a 1907 built steam tug, eppleton Hall, a 1914 built paddlewheel tug. The fleet includes one hundred small craft. The Visitor Center is housed in the parks 1909 waterfront warehouse, located at the corner of Hyde, the City of San Francisco declared the four-story brick structure an historic landmark in 1974, and the building was listed on the National Register of Historic Places in 1975.
Inside, exhibits tell the story of San Francisco’s colorful and diverse maritime heritage, the visitor center contains a theater and a ranger-staffed information desk. The building was built by the WPA as a public bathhouse. The architects were William Mooser Jr. and William Mooser III, the third-floor gallery is used for visiting exhibitions and in 2005 exhibited Sparks, an exhibition of shipboard radio and radioteletype technology. The Maritime Museum has re-opened after a series of renovations, the Maritime Research Center is the premier resource for San Francisco and Pacific Coast maritime history. Originating in 1939, the collections have become the largest maritime collection on the West Coast, one of these is the San Francisco Maritime National Park Association. The Visitors Center, Hyde Street Pier and Maritime Museum are all situated adjacent to the foot of Hyde Street, the park headquarters and Maritime Research Center are located in Fort Mason, some 10 minutes walk to the west of the other sites.
Opening times and fees for the sites can be found on the parks website. Aquatic Park is a place for open water swimming, both for recreation and training. The South End Rowing Club and Dolphin Club are located in Aquatic Park, WPA murals and sculpture at Aquatic Park — The New Deal Art Registry
Angel Island (California)
Angel Island is an island in San Francisco Bay offering expansive 360° views of the San Francisco skyline, the Marin County Headlands and Mount Tamalpais. The entire island is included within Angel Island State Park and is administered by California State Parks, Angel Island is the second largest island in area of the San Francisco Bay. The island is so large that on a day and Napa can be seen from the north side of the island. The highest point on the island, almost exactly at its center, is Mount Caroline Livermore at a height of 788 feet, the island is separated from the mainland of Marin County by Raccoon Strait, the depth of the water approximately 90 feet. The United States Census Bureau reported an area of 3.107 km². Until about ten years ago, Angel Island was connected to the mainland. From about two years ago the island was a fishing and hunting site for Coast Miwok Native Americans. Similar evidence of Native American settlement is found on the mainland of the Tiburon Peninsula upon Ring Mountain.
In 1775, the Spanish naval vessel San Carlos made the first European entry to the San Francisco Bay under the command of Juan de Ayala, Ayala anchored off Angel Island, and gave it its modern name, the bay where he anchored is now known as Ayala Cove. In his book Two Years Before the Mast, published in 1840, Richard Henry Dana, like much of the California coast, Angel Island was subsequently used for cattle ranching. In 1863, during the American Civil War, the U. S. Army was concerned about Confederate naval raiders attacking San Francisco and it decided to construct artillery batteries on Angel Island, first at Stuart Point and Point Knox. Col. René Edward De Russy was the Chief Engineer, James Terry Gardiner was the engineer tasked with designing and supervising the work. The Army established a camp on the island, and it became an infantry garrison during the US campaigns against Native American peoples in the West. In the 19th century, the designated the entire island as Fort McDowell and developed further facilities there.
A quarantine station was opened in Ayala Cove in 1891, during the Spanish–American War the island served as a discharge depot for returning troops. It continued to serve as a transit station throughout the first half of the 20th century, at the end of World War I the disembarkation center was commanded by William P. Burnham, who had commanded the 82nd Division in France during the war. In 1938, hearings concerning charges of membership in a political party against labor leader Harry Bridges were held on Angel Island before Dean James Landis of Harvard Law School. After eleven weeks of testimony that filled nearly 8,500 pages, the decision was accepted by the United States Department of Labor and Bridges was freed
Devils Postpile National Monument
Devils Postpile National Monument is located near Mammoth Mountain in eastern California. The national monument protects Devils Postpile, a rock formation of columnar basalt. In addition, the John Muir Trail and Pacific Crest Trail merge into one trail as they pass through the monument, excluding a small developed area containing the monument headquarters, visitor center and a campground, the National Monument lies within the borders of the Ansel Adams Wilderness. The monument was once part of Yosemite National Park, but discovery of gold in 1905 near Mammoth Lakes prompted a change that left the Postpile on adjacent public land. Later, a proposal to build a dam called for blasting the Postpile into the river. Influential Californians, including John Muir, persuaded the government to stop the demolition and, in 1911. The flora and fauna at Devils Postpile are typical of the Sierra Nevada, dark-eyed juncos and white-crowned sparrows are common in the summer. The name Devils Postpile refers to a cliff of columnar basalt.
Radiometric dating indicates the formation was created by a flow at some time less than 100,000 years ago. Estimates of the thickness range from 400 feet to 600 feet. The lava that now makes up the Postpile was near the bottom of this mass, because of its great thickness, much of the mass of pooled lava cooled slowly and evenly, which is why the columns are so long and so symmetrical. Columnar jointing occurs when certain types of contract while cooling. A glacier removed much of this mass of rock and left a surface on top of the columns with very noticeable glacial striations. The Postpiles columns average 2 feet in diameter, the largest being 3.5 feet, together they look like tall posts stacked in a pile, hence the features name. If the lava had cooled perfectly evenly, all of the columns would be expected to be hexagonal, but some of the columns have different polygonal cross-sections due to variations in cooling. A survey of 400 of the Postpiles columns found that 44. 5% were 6-sided,37. 5% 5-sided,9. 5% 4-sided,8.
0% 7-sided, compared with other examples of columnar jointing, the Postpile has more hexagonal columns. Another feature that places the Postpile in a category is the lack of horizontal jointing. Several stones from the Devils Postpile can be seen at the entrance to the United States Geological Survey headquarters lot in Reston, although the basaltic columns are impressive, they are not unique
The Tuolumne River flows for 149 miles through Central California, from the high Sierra Nevada to join the San Joaquin River in the Central Valley. While the upper Tuolumne is a mountain stream, the lower river crosses a broad, fertile. Like most other central California rivers, the Tuolumne is dammed multiple times for irrigation, humans have inhabited the Tuolumne River area for up to 10,000 years. The city of Modesto grew up on the Tuolumne as a railroad hub, as agricultural production rose, farmers along the Tuolumne formed Californias first two irrigation districts to better control and develop the river. From the 1900s to the 1930s, the river was dammed at Don Pedro and Hetch Hetchy to provide water for Central Valley farmers and the city of San Francisco, respectively. The Hetch Hetchy project, located inside Yosemite National Park, incited national controversy, as the mid-20th century progressed, demands on the Tuolumne continued to increase, culminating in the completion of New Don Pedro Dam in the early 1970s.
These projects halved the amount of water flowing from the Tuolumne into the San Joaquin, greatly reducing the once-abundant runs of salmon, the Tuolumne originates in Yosemite National Park, high in the Sierra Nevada, as two streams. The 7-mile Lyell Fork rises at the Lyell Glacier below 13, 114-foot Mount Lyell, the highest peak in Yosemite National Park, the 5-mile Dana Fork originates between Mount Dana and Mount Gibbs and flows west. After the confluence of the forks in Tuolumne Meadows, the river meanders northwest, although calm for the first few miles, this quickly changes as the river drops over Tuolumne Falls and White Cascades. After briefly passing through Glen Aulin, the river enters the spectacular 20-mile Grand Canyon of the Tuolumne and Piute Creeks join the river from the north within the Tuolumne Canyon. At the end of the canyon the river widens into Hetch Hetchy Reservoir, formed by a dam built in 1923 to provide water to the city of San Francisco, in the scenic Hetch Hetchy Valley.
Falls Creek forms Wapama Falls and Tueeulala Falls, two of the highest in Yosemite, as it enters the reservoir from the north. From its source at 8,589 feet above sea level in Tuolumne Meadows, most of the Tuolumnes main tributaries join within this reach, beginning with Cherry Creek from the north just below the intake of the Hetch Hetchy Aqueduct, which delivers water to San Francisco. The South Fork of the Tuolumne joins from the south a few miles downstream, near Groveland-Big Oak Flat, followed by the Clavey River from the north a few miles after that. Directly below Don Pedro Dam is the La Grange Dam, where half the rivers natural flow is diverted into the Turlock. Leaving the foothills, the Tuolumne flows approximately 50 miles west across the Central Valley to its confluence with the San Joaquin River, passing Waterford, Empire and Modesto. The lower Tuolumne is wide and slow-flowing, dropping just 230 feet from the base of La Grange Dam to its mouth at 26 feet. Highway 99 and the Southern Pacific Railroad tracks both cross the river in Modesto, and the Modesto Airport is located adjacent to the river shortly upstream, dry Creek joins the Tuolumne from the north between the airport and the railroad
Big Basin Redwoods State Park
Big Basin Redwoods State Park is a state park in the U. S. state of California, located in Santa Cruz County, about 36 km northwest of Santa Cruz. The park contains almost all of the Waddell Creek watershed, which was formed by the uplift of its rim. Big Basin is Californias oldest State Park, established in 1902 and its original 3,800 acres have been increased over the years to over 18,000 acres. It is part of the Northern California coastal forests ecoregion and is home to the largest continuous stand of ancient coast redwoods south of San Francisco. It contains 10,800 acres of old-growth forest as well as recovering redwood forest, with mixed conifer, chaparral, elevations in the park vary from sea level to over 600 m. The climate ranges from foggy and damp near the ocean to sunny, the park has over 130 km of trails. Some of these trails link Big Basin to Castle Rock State Park, the Skyline-to-the-Sea Trail threads its way through the park along Waddell Creek to Waddell Beach and the adjacent Theodore J.
Hoover Natural Preserve, a freshwater marsh. The park has a number of waterfalls, a wide variety of environments, many animals and abundant bird life – including Stellers jays, herons. Contrary to popular belief that people did not inhabit the old growth forests, archaeological evidence has been found, although sporadically. Ohlone tribes that lived on watercoures which begin in Big Basin Redwoods State Park were the Quiroste, Achistaca and Sayante. In October 1769 the Portola expedition discovered the redwoods of southern Santa Cruz County, although many in the party had been ill with scurvy, they gorged themselves on berries and quickly recovered. This miraculous recovery, as it seemed at the time, inspired the name given to the valley, although he did not fight Spanish soldiers until early 1793, Charquin had harbored fugitive neophytes since November 1791. Charquin and his followers retreated into the country behind Point Ano Nuevo in late 1791, lands that were equidistant from the missions San Francisco, Santa Clara.
From there he invited dissatisfied neophytes to join him, on January 6,1793, Mission San Francisco servant Diego Olbera baptized a 22-year-old woman on the verge of death ‘at the Quiroste village in the Mountains’. Olbera was probably in the vicinity to convince Charquin and his followers to return to the Mission, but the success of Charquin goaded the soldiers into action. No known diary stemming from any successful expedition against Charquin exists, yet indirect evidence exist that one did take place, and that it occurred in late April and early May 1793. An entry in the Mission San Francisco Libro de Difuntos on May 3,1793 recorded the death of two children of families in the mountain Quiroste Village of Chipletac. Charquin seems to have captured at that time
Sequoia National Park
Sequoia National Park is a national park in the southern Sierra Nevada east of Visalia, California, in the United States. It was established on September 25,1890, the park is south of and contiguous with Kings Canyon National Park, the two are administered by the National Park Service together as the Sequoia and Kings Canyon National Parks. They were designated the UNESCO Sequoia-Kings Canyon Biosphere Reserve in 1976, the park is famous for its giant sequoia trees, including the General Sherman tree, the largest tree on Earth. The General Sherman tree grows in the Giant Forest, which five out of the ten largest trees in the world. The Giant Forest is connected by the Generals Highway to Kings Canyon National Parks General Grant Grove, the parks giant sequoia forests are part of 202,430 acres of old-growth forests shared by Sequoia and Kings Canyon National Parks. Indeed, the preserve a landscape that still resembles the southern Sierra Nevada before Euro-American settlement. Many park visitors enter Sequoia National Park through its entrance near the town of Three Rivers at Ash Mountain at 1,700 ft elevation.
The last California grizzly was killed in this park in 1922, the California Black Oak is a key transition species between the chaparral and higher elevation conifer forest. At higher elevations in the front country, between 5,500 and 9,000 feet in elevation, the landscape becomes montane forest-dominated coniferous belt, found here are Ponderosa, Jeffrey and lodgepole pine trees, as well as abundant white and red fir. Found here too are the giant sequoia trees, the most massive living single-stem trees on earth, between the trees and summer snowmelts sometimes fan out to form lush, though delicate, meadows. In this region, visitors often see deer, Douglas squirrels, and American black bears. There are plans to reintroduce the bighorn sheep to this park, the vast majority of the park is roadless wilderness, no road crosses the Sierra Nevada within the parks boundaries. 84 percent of Sequoia and Kings Canyon National Parks is designated wilderness and is only by foot or by horseback. Sequoias backcountry offers a vast expanse of high-alpine wonders, covering the highest-elevation region of the High Sierra, the backcountry includes Mount Whitney on the eastern border of the park, accessible from the Giant Forest via the High Sierra Trail.
On the floor of canyon, at least two days hike from the nearest road, is the Kern Canyon hot spring, a popular resting point for weary backpackers. From the floor of Kern Canyon, the trail ascends again over 8,000 ft to the summit of Mount Whitney, in the summertime, Native Americans would travel over the high mountain passes to trade with tribes to the East. By the time the first European settlers arrived in the area, smallpox had spread to the region. The first European settler to homestead in the area was Hale Tharp, Tharp allowed his cattle to graze the meadow, but at the same time had a respect for the grandeur of the forest and led early battles against logging in the area
Joshua Tree National Park
Joshua Tree National Park is located in southeastern California. Declared a U. S. National Park in 1994 when the U. S. Congress passed the California Desert Protection Act and it is named for the Joshua trees native to the park. It covers a area of 790,636 acres —an area slightly larger than the state of Rhode Island. A large part of the park, some 429,690 acres, is a wilderness area. The Little San Bernardino Mountains run through the southwest edge of the park, in 1950, the size of the park was reduced by about 265,000 acres to exclude some mining property. The park was elevated to a National Park on 31 October 1994 by the Desert Protection Act, the higher and cooler Mojave Desert is the special habitat of Yucca brevifolia, the Joshua tree for which the park is named. It occurs in patterns from dense forests to distantly spaced specimens, in addition to Joshua tree forests, the western part of the park includes some of the most interesting geologic displays found in Californias deserts. The dominant geologic features of landscape are hills of bare rock.
These hills are popular amongst rock climbing and scrambling enthusiasts, the flatland between these hills is sparsely forested with Joshua trees. Together with the piles and Skull Rock, the trees make the landscape otherworldly. Temperatures are most comfortable in the spring and fall, with an average high/low of 85 and 50 °F respectively, winter brings cooler days, around 60 °F, and freezing nights. It occasionally snows at higher elevations, summers are hot, over 100 °F during the day and not cooling much below 75 °F until the early hours of the morning. Joshua trees dominate the open spaces of the park, but in among the outcroppings are piñon pine, California juniper, Quercus turbinella, Quercus john-tuckeri. These communities are under stress, however, as the climate was wetter until the 1930s, with the same hot. These cycles were nothing new, but the vegetation did not prosper when wetter cycles returned. The difference may have been human development, cattle grazing took out some of the natural cover and made it less resistant to the changes.
But the bigger problem seems to be invasive species, such as cheatgrass, in drier times, they die back, but do not quickly decompose. This makes wildfires hotter and more destructive, which some of the trees that would have otherwise survived
U.S. Route 99 in California
It was assigned in 1926 and existed until it was replaced for the most part by Interstate 5. A large section in the Central Valley is now State Route 99, the highway started at the border with Baja California in Calexico, California. It continued north along the shore of the Salton Sea. The stretch is now known as State Route 86, Highway 99 continued along present-day State Route 111 through Coachella to its intersection at Dillon Road with another major US route signed as both US60 and US70. Now multiplexed as US 60/70/99, the highway continued north through Indio, in Beaumont, Highway 60 split off on its own westward trek to Los Angeles. The highway through Banning and Beaumont was bypassed by the new version of US 60/70/99 that would become part of Interstate 10. The edges of the old US60 shield at the replacement interchanges overhead sign are visible today underneath the State Route 60 shield that covers it up. Highway 99s original alignment over the hill was known in its earliest days as the Ridge Route, built in 1915, the alignment between Castaic and State Route 138 in Gorman is listed on the National Register of Historic Places.
This section was bypassed in 1933 by the three-lane Alternate Ridge Route, from the southern tip of the San Joaquin Valley at the foot of the Grapevine, US99 continued to Sacramento where it split into two highways, 99E and 99W. The two highways rejoined in Red Bluff and continued again as US99 through Oregon, Washington and to the border with British Columbia. When it was first designated in late 1926, US99 ran with U. S. Route 66 from San Bernardino via Pasadena to Los Angeles, the route was signed in 1928. This alignment remained through 1933, but by 1942 it had moved to its own alignment from San Bernardino to Los Angeles and this alignment used Garvey Avenue from Pomona, turning onto Ramona Boulevard in Alhambra to reach Macy Street near downtown Los Angeles. It turned north at Figueroa Street, running through the Figueroa Street Tunnels, when the San Bernardino Freeway, Santa Ana Freeway and Pasadena Freeway were completed, it was routed onto them, continuing to exit at Avenue 26. In 1962, with the completion of the Golden State Freeway northeast of downtown, US99 was moved onto it, bypassing the Santa Ana Freeway, Four Level Interchange, from Los Angeles US99 followed San Fernando Road through Glendale and Burbank to Sylmar.
From 1937 to 1964 it shared this routing with U. S. Route 6, the Old Road starts in near the Newhall Pass Interchange, just south of Santa Clarita, eventually crossing under present-day Interstate 5. As the road now winds north, passing by Pico Canyon Road, it reaches Mc Bean Parkway near the California Institute of the Arts, College of the Canyons, in Castaic The Old Road becomes a suburban street and ends at Oak Hill Court, just outside Castaic. A substantial portion of the road is submerged beneath Pyramid Lake,99 headed over Tejon Pass to the San Joaquin Valley. Just north of the entry to the valley, Interstate 5 splits off from US99, and US99 continued on the current route of State Route 99, to Bakersfield, Fresno