Misplaced Pages

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37-878: The freeway runs from the Four Level Interchange in downtown Los Angeles to the Golden State Freeway in the Sun Valley district of Los Angeles in the San Fernando Valley . From the Four Level Interchange to its intersection with the Ventura Freeway in the southeastern San Fernando Valley (also known as the Hollywood Split ), the freeway is signed as part of U.S. Route 101 . Afterwards, it

74-631: A "stop-free express highway" between Downtown Los Angeles and the San Fernando Valley. The first segment of the Hollywood Freeway built was a one and a half mile stretch through the Cahuenga Pass . That segment opened on June 15, 1940. It was then known as the "Cahuenga Pass Freeway". Pacific Electric Railway trolleys ran down the center of this freeway until 1952. The next section of the freeway that stretched from

111-429: A left, continue on Lankershim Boulevard and follow the signs near Universal Studios to re-enter on US 101. Likewise, there is no interchange from US 101 north to SR 134 east. Motorists intending to go in that direction must exit US 101 at Vineland Avenue, make a right, make another right on Riverside Drive and enter SR 134 on the left. This interchange is also known as the "Hollywood Split". SR 170 then continues through

148-573: A letter, postmiles were measured on the road as it was in 1964 , based on the alignment that existed at the time, and do not necessarily reflect current mileage. R reflects a realignment in the route since then, M indicates a second realignment, L refers to an overlap due to a correction or change, and T indicates postmiles classified as temporary ( for a full list of prefixes, see California postmile § Official postmile definitions ). Segments that remain unconstructed or have been relinquished to local control may be omitted. The entire route

185-552: A new collection of innovations to champion every two years that merit accelerated deployment. Among the approaches promoted by the EDC effort are: adaptive traffic control to reduce fuel consumption and improve travel time reliability ; alternative intersection design; prefabricated bridge elements and systems; high-friction surface treatments; warm mix asphalt; ultra-high-performance concrete; virtual public involvement; and time-saving strategies such as rapid bridge replacement . Since

222-551: A question based on the LTPP data. In 2010, FHWA launched the Every Day Counts (EDC) initiative to identify and deploy innovations to reduce project delivery time, enhance safety, and protect the environment. EDC is a state-based model that rapidly deploys proven, yet underutilized innovations. FHWA works with State transportation departments, local governments, tribes, private industry, and other stakeholders to identify

259-756: Is a division of the United States Department of Transportation that specializes in highway transportation. The agency's major activities are grouped into two programs, the Federal-aid Highway Program and the Federal Lands Highway Program. Its role had previously been performed by the Office of Road Inquiry , Office of Public Roads and the Bureau of Public Roads . With the coming of the bicycle in

296-662: Is from Route 101 near Riverside Drive to Route 5 near Tujunga Wash . In addition to the above, the original 1963 definition of Route 170 included " Route 405 near Inglewood to Route 101 in Los Angeles" in a separate subdivision. This was defined in anticipation of the Laurel Canyon Freeway , which never came to fruition. In 1970, the definition was amended to subdivide the portion south of US 101 as "(a) Los Angeles International Airport to Route 90 ." and "(b) Route 2 to Route 101 in Los Angeles," deleting

333-623: Is in Los Angeles , Los Angeles County . Four Level Interchange The Four Level Interchange (officially the Bill Keene Memorial Interchange ) is the first stack interchange in the world. Completed in 1949 and fully opened in 1953 at the northern edge of Downtown Los Angeles , California , United States , it connects U.S. Route 101 ( Hollywood Freeway and Santa Ana Freeway ) to State Route 110 ( Harbor Freeway and Arroyo Seco Parkway ). In 2006,

370-666: Is signed as State Route 170 until its northern terminus at Interstate 5 . The intersection of the Hollywood, Santa Ana , and Harbor freeways and the Arroyo Seco Parkway , known as the Four Level Interchange , is one of the major landmarks in Los Angeles and a symbol of the city's post- World War II development. As of the latest amendment on October 2, 2015, the California Streets and Highways Code defines Route 170 in section 470 as follows: Route 170

407-685: The Manual on Uniform Traffic Control Devices (MUTCD), which is used by most highway agencies in the United States. The MUTCD provides such standards as the size, color and height of traffic signs , traffic signals and road surface markings . Long-Term Pavement Performance (LTPP) is a program supported by the FHWA to collect and analyse road data. The LTPP program was initiated by the Transportation Research Board (TRB) of

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444-634: The National Research Council (NRC) in the early 1980s. The FHWA with the cooperation of the American Association of State Highway and Transportation Officials (AASHTO) sponsored the program. As a result of this program, the FHWA has collected a huge database of road performance. The FHWA and the ASCE hold an annual contest known as LTPP International Data Analysis Contest , which is based on challenging researchers to answer

481-515: The 1890s, interest grew regarding the improvement of streets and roads in America. The traditional method of putting the burden on maintaining roads on local landowners was increasingly inadequate. In 1893, the federal Office of Road Inquiry (ORI) was founded; in 1905, it was renamed the Office of Public Roads (OPR) and made a division of the United States Department of Agriculture . Demands grew for local and state government to take charge. With

518-568: The 1970s. The Hollywood Freeway is an expansion of the original Cahuenga Parkway , a short six-lane freeway that ran through the Cahuenga Pass between Hollywood and Studio City. The Cahuenga Parkway featured Pacific Electric Railway " Red Car " tracks in its median, but by the 1950s these tracks were out of service due to radical reductions in Red Car service. The Pacific Electric right-of-way later accommodated an additional lane in each direction. The second location of Los Angeles High School

555-683: The Federal Lands Highway Program (sometimes called "direct fed"), the FHWA provides highway design and construction services for various federal land-management agencies, such as the Forest Service and the National Park Service . In addition to these programs, the FHWA performs and sponsors research in the areas of roadway safety, congestion, highway materials and construction methods, and provides funding to local technical assistance program centers to disseminate research results to local highway agencies. The FHWA also publishes

592-409: The San Fernando Valley to Downtown Los Angeles opened on April 16, 1954 at a cost of $ 55 million. The final section, north of the Ventura Freeway to the Golden State Freeway was completed in 1968. A year after the Hollywood Freeway opened, it was used by an average of 183,000 vehicles a day, almost double the capacity it was designed to carry. Actor Bob Hope called it the "biggest parking lot in

629-685: The coming of the automobile, urgent efforts were made to upgrade and modernize dirt roads designed for horse-drawn wagon traffic. In 1910, the American Association for Highway Improvement was organized. Funding came from automobile registration, and taxes on motor fuels, as well as state aid. By 1914, there were 2.4 million miles of rural dirt rural roads; 100,000 miles had been improved with grading and gravel, and 3,000 miles were given high-quality surfacing. The rapidly increasing speed of automobiles, and especially trucks, made maintenance and repair high-priority items. In 1915, OPR's name

666-562: The country's economy, defense, and mobility by the Federal Highway Administration . As of 2018, Caltrans is planning to add soundwalls to SR 170 in both directions between Sherman Way and the Hollywood Split . There are currently some neighborhoods located near the freeway, which cause noise pollution. Now that soundwalls are in place, it can reduce the noise and reduces smog. Plans for the Hollywood Freeway officially began in 1924 when Los Angeles voters approved

703-599: The freeway northwards. US 101 leaves the freeway, merging onto the Ventura Freeway and heads west. SR 134 continues the Ventura Freeway, heading east. On the southbound side, a sign indicates "END Route 170". Curiously, there is no interchange from SR 134 west to US 101 south. This connector route was put on hold pending the construction of the Laurel Canyon Freeway. Motorists intending to go in that direction must exit SR 134 at Cahuenga Boulevard , make

740-633: The freeway's construction was dumped into Chávez Ravine , the current home to Dodger Stadium . In 1967, the Hollywood Freeway was the first freeway in California that had ramp meters . Near the Vermont Avenue exit, there's a seemingly over-wide center strip now filled with trees. This is where the never-built Beverly Hills Freeway was to merge with the Hollywood Freeway. Plans for the Beverly Hills Freeway were halted in

777-527: The inception of EDC, each state has used 26 or more of the 57 innovations and some states have deployed more than 45. Many of these practices have become mainstream practices across the country. The Federal Highway Administration is overseen by an administrator appointed by the President of the United States by and with the consent of the United States Senate . The administrator works under

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814-482: The interchange displaced over 4,000 people from their homes and cost $ 5.5 million ($ 50.7 million in 2023) - making it the most expensive half-mile of highway ever built at the time. The mainline traffic of US 101 is at the top of the interchange, above the ramps, a rarity in stack interchanges. Other examples of similar configurations would later be constructed, including on the M25 interchange with M23 passing above

851-400: The interchange was officially renamed in the memory of Los Angeles traffic and weather reporter Bill Keene . The highway is a stack interchange that connects U.S. Route 101 to State Route 110 . All movements are possible in this interchange between US 101, which crosses over SR 110, but not necessarily with surrounding roads, like Sunset Boulevard , which crosses SR 110 just northeast of

888-527: The interchange. The interchange is located at Exit 3 of US 101 and Exit 24A of SR 110. The four freeway segments ("paths" of travel) from the Four Level Interchange are: While the highway oriented east–west at this intersection has consistently been numbered US 101, the numerical designation of road oriented north–south at this interchange has changed over the years. Originally designated U.S. Route 66 and U.S. Route 6 and later signed as State Route 11, all of these designations were eventually removed from

925-555: The intersection and replaced with the current designation of Route 110. The four-level reinforced concrete structure was designed by a team of engineers and built by the James I. Barnes Construction Company. Although it was finished in 1949, it was not put into full use until the freeways it served were completed and opened on 22 September 1953. In July 2006, the freeway interchange was officially named in honor of Bill Keene , former KNX and KNXT traffic and weather reporter, although

962-763: The new U.S. Department of Transportation . The FHWA took over the functions of the Bureau of Public Roads the following year. The FHWA's role in the Federal-aid Highway Program is to oversee federal funds to build and maintain the National Highway System (primarily Interstate highways , U.S. highways and most state highways). This funding mostly comes from the federal gasoline tax and mostly goes to state departments of transportation . The FHWA oversees projects using these funds to ensure that federal requirements for project eligibility, contract administration and construction standards are adhered to. Under

999-476: The new name is rarely used. Keene referred to the interchange as "The Stacks" and the "4-H Interchange". During the 1960s, Dick Whittinghill on radio station KMPC sometimes called it the Four Letter Interchange. The interchange was constructed as a stack interchange because surrounding buildings and terrain made construction of a cloverleaf interchange impractical. The construction of

1036-500: The northeastern portion of the San Fernando Valley , finally merging onto northbound I-5. There is no connector route to I-5 south because the angle between the two freeways is too acute. There are HOV lanes in operation 24 hours a day in each direction of SR 170 between I-5 and the Hollywood Split interchange. There is a direct connection from the northbound SR 170 HOV lanes onto the northbound I-5 HOV lanes, as well as from

1073-646: The organization was once again named the Bureau of Public Roads; it was placed under the Department of Commerce . From 1917 through 1941, 261,000 miles of highways were built with $ 3.17 billion in federal aid and $ 2.14 billion in state and local funds. The Federal Highway Administration was created on October 15, 1966, along with the Bureau of Motor Carrier Safety and the National Highway Safety Bureau (now known as National Highway Traffic Safety Administration ), as part of

1110-582: The ramps (south of London ), the junction of I-695 and I-70 in Baltimore , and the Interstate 805 – Interstate 8 interchange in San Diego . Its distinctive architecture has long made it a symbol of Los Angeles' post– World War II development, and it appears on numerous postcards from the 1950s and 1960s. Federal Highway Administration The Federal Highway Administration ( FHWA )

1147-462: The route started at its junction with SR 2 (the intersection of Santa Monica Boulevard and Highland Avenue), thus the route's first exit northbound at Magnolia Boulevard is numbered as exit 6 instead of exit 1, while the last two southbound exits with SR 134 east and US 101 south are numbered as exits 5B and 5A instead of exits 1B and 1A, respectively (although as of 2022, signage has not yet been updated with exit numbers). Except where prefixed with

Hollywood Freeway - Misplaced Pages Continue

1184-482: The segment between SR 2 and an extension of SR 90 that was never constructed. Subdivision b would run along Highland Avenue in Hollywood . In 2015, the state relinquished Highland Avenue to the city of Los Angeles, and the legislature amended the definition to reflect that as well as remove the final unconstructed freeway segment. SR 170 begins its northbound route at the junction with the Ventura Freeway, continuing

1221-645: The southbound I-5 HOV lanes onto the southbound SR 170 HOV lanes. This makes it possible to connect with the I-5 HOV lanes as well as the SR 14 HOV lanes (from the I-5) without merging into regular lanes. Both this portion of US 101 and the entirety of SR 170 are part of the California Freeway and Expressway System , and are part of the National Highway System , a network of highways that are considered essential to

1258-465: The world" in his routine. The segment through Hollywood was the first to be built through a heavily populated area and requiring the moving or demolition of many buildings, including Rudolph Valentino 's former home in Whitley Heights. The freeway was also designed to curve around KTTV Studios and Hollywood Presbyterian Church . Much of the rubble and debris from the buildings removed for

1295-665: Was changed to the Bureau of Public Roads . The following year, federal aid was first made available to improve post roads and promote general commerce: $ 75 million over five years, issued through the BPR in cooperation with the state highway departments. In 1939, BPR was renamed to the Public Roads Administration (PRA) and shifted to the Federal Works Agency . After the FWA was abolished in 1949,

1332-455: Was constructed to freeway standards, with several grade-separated interchanges, although it is now an expressway maintained by Los Angeles County. California's legislature has relinquished state control of the segment of SR 170 along Highland Avenue , and thus that portion is now maintained by the City of Los Angeles. Despite the relinquishment, the exit numbers on SR 170 still correlate to when

1369-799: Was in the path of the freeway. The school moved to its third and current location in 1917. The school buildings were converted into a school for boys with truancy problems until 1948, when it was demolished to make way for the freeway. SR 170 was originally supposed to run from the I-5 interchange to I-405 near the Los Angeles International Airport as the Laurel Canyon Freeway under the Laurel Canyon Boulevard , Crescent Heights Boulevard and La Cienega Boulevard alignments of today. In fact, much of La Cienega Boulevard between Manchester Avenue and Venice Boulevard

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