U.S. 101 follows the Bayshore Freeway between San Jose and San Francisco through San Mateo County, following one of the oldest freeways in the San Francisco Bay Area. Portions of the freeway, including a section north of San Francisco International Airport, was constructed on a landfill.
| U.S. 101 (Bayshore Freeway) north |
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Now in San Mateo County, the next four exits along U.S. 101 (Bayshore Freeway) north are Exit 403, University Avenue north to California 109 and the Dumbarton Bridge; Exits 404A-B, California 114 (Willow Road); and Exit 406, Marsh Road and California 84 (Bayfront Expressway) east. The original porcelain enamel mileage sign was replaced in 2007 with a reflective sign. Note that the new sign still does not reference the state highway designations; both California 109 and California 114 are unsigned (secret) routes. Photos taken 03/18/06 and by Jeff Waller (09/04/07). |
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The right two lanes connect to Exit 403, University Avenue. While the section of University Avenue within the city of East Palo Alto is not state-maintained, the section in Menlo Park is state-maintained as an approach to California 84/Dumbarton Bridge east to Newark and Fremont. Use University Avenue southwest to Palo Alto in Santa Clara County. Photos taken 03/18/06 and by Jeff Waller (09/04/07). |
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Northbound U.S. 101 (Bayshore Freeway) reaches Exit 403, University Avenue. Photos taken 03/18/06 and by Jeff Waller (09/04/07). |
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The next interchange along U.S. 101 (Bayshore Freeway) north is Exits 404A-B, California 114 (Willow Road). The original porcelain enamel sign listed this exit as California 84; the newer sign omits any route number designation but leaves the auxiliary sign for the Dumbarton Bridge, which carries California 84 to the East Bay. Photos taken 03/18/06 and by Jeff Waller (09/04/07). |
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This mileage sign provides the distance to the next three interchanges along U.S. 101 (Bayshore Freeway) north: Exits 404A-B, California 114 (Willow Road) (eastbound connects to the Dumbarton Bridge); Exit 406, California 84 (Bayfront Expressway) east and Marsh Road southwest to Atherton; and Exit 408, California 84 (Woodside Road) west. Photos taken 03/18/06 and by Jeff Waller (09/04/07). |
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Northbound U.S. 101 (Bayshore Freeway) reaches Exits 404A, California 114 (Willow Road) east to California 84/Dumbarton Bridge east to Fremont. The next exit is a loop ramp to Willow Road southwest to Menlo Park. Photos taken 03/18/06 and by Jeff Waller (09/04/07). |
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Immediately thereafter, northbound U.S. 101 (Bayshore Freeway) reaches Exit 404B, Willow Road southwest to Menlo Park. Photo taken by Jeff Waller (09/04/07). |
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This U.S. 101 north reassurance shield is posted after the Willow Road (California 114) interchange. Photo taken by Jeff Waller (09/04/07). |
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The next exit along U.S. 101 (Bayshore Freeway) is Exit 406, California 84 (Bayfront Expressway) east and Marsh Road southwest to Atherton. Photo taken by Jeff Waller (09/04/07). |
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An old-style Union Pacific Railroad overpass crosses U.S. 101. Photo taken by Jeff Waller (09/04/07). |
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The next four (not sure why this sign says five) exits along U.S. 101 (Bayshore Freeway) serve Redwood City, the seat of San Mateo County: Exit 406, California 84 (Bayfront Expressway) east and Marsh Road southwest to Atherton; Exit 408, California 84 (Woodside Road); Exit 409, Whipple Road; and Exit 411, Holly Street and Redwood Shores Parkway. Photo taken by Jeff Waller (09/04/07). |
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Northbound U.S. 101 (Bayshore Freeway) reaches Exit 406, California 84 (Bayfront Expressway) east and Marsh Road southwest to Atherton. After this interchange, California 84 west traffic merges onto U.S. 101 north briefly. Photo taken by Jeff Waller (09/04/07). |
| U.S. 101 (Bayshore Freeway) north and California 84 west |
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The next exit along U.S. 101 (Bayshore Freeway) north and California 84 west is Exit 408, California 84 (Woodside Road) west and Seaport Boulevard north to the Port of Redwood City. U.S. 101 enters Redwood City. Redwood City incorporated in 1867, and voters adopted the Redwood City charter on April 9, 1929. As of the 2000 Census, Redwood City had a population of 75,400 and encompassed approximately 19 square miles. The city is also the seat of San Mateo County. Photo taken by Jeff Waller (10/13/07). |
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Northbound U.S. 101 (Bayshore Freeway) reaches Exit 408, California 84 (Woodside Road) west and Seaport Boulevard north to the Port of Redwood City. Photo taken by Jeff Waller (10/13/07). |
| U.S. 101 (Bayshore Freeway) north |
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The next exit along U.S. 101 (Bayshore Freeway) north is Exit 409, Whipple Avenue. Photo taken by Jeff Waller (10/13/07). |
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Northbound U.S. 101 (Bayshore Freeway) reaches Exit 409, Whipple Avenue in Redwood City. Photo taken by Jeff Waller (10/13/07). |
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The next exit along U.S. 101 (Bayshore Freeway) north is Exit 411, Holly Street and Redwood Shores Parkway. Photo taken by Jeff Waller (10/13/07). |
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This mileage sign along U.S. 101 (Bayshore Freeway) north provides the distance to San Carlos, San Mateo, and San Francisco. Photo taken by Jeff Waller (10/13/07). |
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An auxiliary sign is posted for Exit 411, Holly Street and Redwood Shores Parkway along U.S. 101 (Bayshore Freeway) north. Photo taken 07/03/06. |
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The right lane of U.S. 101 north becomes exit only for Exit 411, Holly Street and Redwood Shores Parkway. While the modified cloverleaf interchange is located in the city of San Carlos, Redwood Shores Parkway travels northeast into Redwood Shores section of Redwood City. Use Holly Street west to El Camino Real (California 82) and downtown San Carlos. Photo taken 07/03/06. |
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Northbound U.S. 101 reaches Exit 411, Holly Street and Redwood Shores Parkway. Photo taken 07/03/06. |
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The next exit along U.S. 101 (Bayshore Freeway) north is Exit 412, Ralston Avenue and Marine Parkway. Photo taken 07/03/06. |
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A second advance guide sign for Exit 412 acknowledges Marine Parkway, which travels east into the Redwood Shores section of Redwood City. Photo taken by Jeff Waller (10/13/07). |
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The right lane of northbound U.S. 101 (Bayshore Freeway) becomes exit only for Exit 412, Ralston Avenue and Marine Parkway. This interchange serves the city of Belmont. Photo taken 07/03/06. |
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This mileage sign provides the distance to the next three exits along U.S. 101 north: Exit 412, Ralston Avenue and Marine Parkway; Exit 414A, Hillsdale Boulevard; and Exit 414B, California 92/Arthur Younger Freeway east/west. Photo taken by Jeff Waller (10/13/07). |
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Northbound U.S. 101 (Bayshore Freeway) reaches Exit 412, Ralston Avenue to Belmont and Marine Parkway to Redwood Shores. Photo taken 07/03/06. |
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The next exit along U.S. 101 (Bayshore Freeway) north is Exit 414A, Hillsdale Boulevard east to Foster City and west to the San Mateo County Fairgrounds and Hillsdale neighborhood of the city of San Mateo. Photo taken 07/03/06. |
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This mileage sign provides the distance to the next three exits along U.S. 101 north: Exit 414A, Hillsdale Boulevard; Exit 414B, California 92/Arthur Younger Freeway east/west; and Exit 415, Kehoe Avenue. Photo taken by Jeff Waller (10/13/07). |
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California 92 is a major east-west freeway corridor that connects Interstate 880 (Nimitz Freeway) in Hayward with U.S. 101 (Bayshore Freeway) and Interstate 280 (Father Junipero Serra Freeway) in San Mateo via the Hayward-San Mateo Bridge. A toll is required to use the bridge westbound. Photo taken 07/03/06. |
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The right lane of U.S. 101 (Bayshore Freeway) north becomes exit only for Exit 414A, Hillsdale Boulevard. This is the first of several exits from the Bayshore Freeway to serve the city of San Mateo. Home to 92,482 people as of the 2000 Census, San Mateo was incorporated on September 4, 1894, and is affluent like many of its neighboring cities along the Peninsula. This section of U.S. 101 saw guide sign replacements in 2007. Photos taken 07/03/06 and by Jeff Waller (10/13/07). |
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Northbound U.S. 101 (Bayshore Freeway) reaches Exit 414A, Hillsdale Boulevard. These signs were also replaced in 2007. Photos taken 07/03/06 and by Jeff Waller (10/13/07). |
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This mileage sign provides the distance to the next three exits along U.S. 101 (Bayshore Freeway) north: Exit 414B, California 92/Arthur Younger Freeway east/west; Exit 415, Kehoe Avenue; and Exit 416, Third Avenue and Fourth Avenue. Photos taken 07/03/06 and by Jeff Waller (10/13/07). |
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The right two lanes connect to California 92. The left four lanes continue north on U.S. 101 (Bayshore Freeway) to San Francisco. Photos taken 07/03/06 and by Jeff Waller (10/13/07). |
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Northbound U.S. 101 (Bayshore Freeway) reaches Exit 414B, California 92/San Mateo-Hayward Bridge east to Hayward and California 92 west to Half Moon Bay. The next interchange along northbound is Exit 415, Kehoe Avenue. Photos taken 07/03/06 and by Jeff Waller (10/13/07). |
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Now on the transition ramp from U.S. 101 north to California 92, the ramp splits, with the left lane connecting to California 92 west and the right lane connecting to California 92 east to the San Mateo-Hayward Bridge over San Francisco Bay. Photo taken 07/03/06. |
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Northbound U.S. 101 (Bayshore Freeway) reaches Exit 415, Kehoe Avenue. Photo taken by Jeff Waller (10/13/07). |
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The next exit along U.S. 101 (Bayshore Freeway) north is Exit 416, Third Avenue. Photo taken by Jeff Waller (10/13/07). |
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Northbound U.S. 101 (Bayshore Freeway) reaches Exit 416, Third Avenue. Photo taken by Jeff Waller (10/13/07). |
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The next three exits along U.S. 101 (Bayshore Freeway) north are Exit 417A, Dore Avenue; Exit 417B, Peninsula Avenue; and Exit 419A, Anza Boulevard. Photo taken by Jeff Waller (10/13/07). |
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Northbound U.S. 101 (Bayshore Freeway) reaches Exit 417A, Dore Avenue, which is the second to last exit ramp to serve the city of San Mateo. Photo taken by Jeff Waller (10/13/07). |
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The next three exits along U.S. 101 (Bayshore Freeway) north are Exit 417B, Peninsula Avenue; Exit 419A, Anza Boulevard; and Exit 419B, Broadway. Ongoing construction meant that several signs along this stretch of U.S. 101 were in the process of being replaced. Photo taken by Jeff Waller (10/13/07). |
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Northbound U.S. 101 (Bayshore Freeway) reaches Exit 417B, Peninsula Avenue. This exit is the last one to serve the city of San Mateo, and it also leads into the city of Burlingame. Photo taken by Jeff Waller (10/13/07). |
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U.S. 101 (Bayshore Freeway) leaves San Mateo and enters the city of Burlingame, home to 28,158 people as of the 2000 Census. Northbound U.S. 101 reaches Exit 419A, Anza Boulevard (temporarily unsigned exit ramp). Photo taken by Jeff Waller (10/13/07). |
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The next three exits along U.S. 101 (Bayshore Freeway) north are Exit 419B, Broadway southwest into downtown Burlingame; Exit 420, Millbrae Avenue; and Exit 422, San Francisco International Airport. Photo taken by Jeff Waller (10/13/07). |
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The right lane of U.S. 101 (Bayshore Freeway) becomes exit only for Exit 419B, Broadway to Burlingame. Photo taken by Jeff Waller (10/13/07). |
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Northbound U.S. 101 (Bayshore Freeway) reaches Exit 419B, Broadway to Burlingame. Signage should be replaced on this section once construction of new lanes is complete. Photo taken by Jeff Waller (10/13/07). |
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As U.S. 101 passes under Broadway, advance signage for the next exit is posted. The next exit along U.S. 101 (Bayshore Freeway) north is Exit 420, Millbrae Avenue. Photo taken by Jeff Waller (10/13/07). |
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After the Broadway interchange (Exit 419B), northbound U.S. 101 (Bayshore Freeway) next approaches Exit 420, Millbrae Avenue, followed by Exit 422, San Francisco International Airport and Exit 423, San Bruno Avenue. Photo taken 11/26/04. |
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Northbound U.S. 101 (Bayshore Freeway) reaches Exit 420, Millbrae Avenue in the city of Millbrae. The city was incorporated as a charter city on January 14, 1948, and is home to 20,718 people as of the 2000 Census. Photo taken 11/26/04. |
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The next exit along northbound U.S. 101 (Bayshore Freeway) is Exit 422, San Francisco International Airport, followed by Exit 423, San Bruno Avenue. Photo taken 11/26/04. |
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The next exit along northbound U.S. 101 (Bayshore Freeway) is Exit 422, San Francisco International Airport, followed by Exit 423, San Bruno Avenue. Photo taken 11/26/04. |
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Northbound U.S. 101 (Bayshore Freeway) reaches Exit 422, San Francisco International Airport. Photo taken 11/26/04. |
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The next three exits along U.S. 101 (Bayshore Freeway) north are Exit 423A, San Bruno Avenue; Exit 423B, Interstate 380/Kopp Freeway; and Exit 424, North Access Road. Photo taken 03/19/06. |
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Soon thereafter is the one-mile advance sign for Exit 423B, Interstate 380/Kopp Freeway west to San Bruno. Photo taken 03/19/06. |
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The right lane of U.S. 101 (Bayshore Freeway) north becomes exit only for Exit 423A, San Bruno Avenue near San Francisco International Airport. Photo taken 03/19/06. |
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Northbound U.S. 101 (Bayshore Freeway) meets Exit 423A, San Bruno Avenue. The next exit is Exit 423B, Interstate 380 west to San Bruno and Interstate 280. Photo taken 03/19/06. |
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Immediately thereafter, Interstate 380 departs west toward San Bruno and Interstate 280. The next exit on northbound U.S. 101 (Bayshore Freeway) is Exit 423C, North Access Road. Photo taken 03/19/06. |
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Northbound U.S. 101 (Bayshore Freeway) reaches Exit 423C, North Access Road. The off-ramp to Interstate 380 west is visible, as is the connecting ramp from the airport to westbound Interstate 380. Through traffic north to the Golden Gate Bridge and beyond should follow Interstate 380 west to Interstate 280 north to California 1 north. Photo taken 03/19/06. |
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The next exit on U.S. 101 (Bayshore Freeway) north is Exit 424, Produce Avenue and South Airport Boulevard. Photo taken 03/19/06. |
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U.S. 101 (Bayshore Freeway) leaves San Francisco International Airport property and enters the city of South San Francisco, "The Industrial City." Home to 61,824 people in 2006 (estimate), South San Francisco has grown as more people have moved out of the city of San Francisco. Photo taken 03/19/06. |
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The next three exits all serve the city of South San Francisco: Exit 424, Produce Avenue/South Airport Boulevard; Exit 425A, East Grand Avenue; and Exit 425B, Oyster Point Road. In the background on the south facing Sign Hill (which is located in front of the much larger San Bruno Mountain), "South San Francisco The Industrial City" can be seen. Photo taken 03/19/06. |
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Continuing north, the right lane of U.S. 101 (Bayshore Freeway) becomes exit only for Exit 424, Produce Avenue and South Airport Boulevard to South San Francisco. Photo taken 03/19/06. |
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Northbound U.S. 101 (Bayshore Freeway) reaches Exit 424, Produce Avenue and South Airport Boulevard. Photo taken 03/19/06. |
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The next three exits on northbound U.S. 101 (Bayshore Freeway) are Exit 425A, Grand Avenue; Exit 425B, Oyster Point Boulevard; and Exit 426A, Bayshore Boulevard to Brisbane and the Cow Palace. Photo taken 03/19/06. |
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Here is another view of the "South San Francisco The Industrial City" motto written on Sign Hill northwest of U.S. 101. Photo taken 03/19/06. |
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Northbound U.S. 101 (Bayshore Freeway) reaches Exit 425A, Grand Avenue. Rains in Winter 2006 greened the hills of San Bruno Mountain. Note the replaced exit number sign added in 2007. Photos taken 03/19/06 and by Jeff Waller (10/13/07). |
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The next exit on northbound U.S. 101 (Bayshore Freeway) is Exit 425B, Oyster Point Boulevard east to Oyster Point Marina and Sister Cities Boulevard west to Hillside Boulevard. Photos taken 03/19/06 and by Jeff Waller (10/13/07). |
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The next three exits on northbound U.S. 101 (Bayshore Freeway) are Exit 425B, Oyster Point Boulevard; Exit 426A, Bayshore Boulevard to Brisbane and the Cow Palace; and Exit 426B, Sierra Point Parkway. Curiously, it appears that a newer non-reflective sign was posted on top of an already existing porcelain enamel guide sign. I wonder what the old sign says. Photo taken 03/19/06. |
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The right lane of U.S. 101 (Bayshore Freeway) becomes exit only for Exit 425B, Oyster Point Boulevard. Photos taken 03/19/06 and by Jeff Waller (10/13/07). |
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Northbound U.S. 101 (Bayshore Freeway) reaches Exit 425B, Oyster Point Boulevard. Photos taken 03/19/06 and by Jeff Waller (10/13/07). |
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The next three exits on northbound U.S. 101 (Bayshore Freeway) are Exit 426A, Bayshore Boulevard to Brisbane and the Cow Palace; Exit 426B, Sierra Point Parkway; and Exit 429A, Harney Road north to north Brisbane and to Monster Park (Candlestick Park) in San Francisco city / county. Photo taken 03/19/06. |
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The right lane becomes exit only for Exit 426A, Bayshore Boulevard to Brisbane and the Cow Palace. The left four lanes continue north on U.S. 101 toward San Francisco. The freeway skirts the eastern edge of San Bruno Mountain. Photo taken 03/19/06. |
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Northbound U.S. 101 (Bayshore Freeway) reaches Exit 426A, Bayshore Boulevard to Brisbane and the Cow Palace. The next off-ramp is for Exit 426B, Sierra Point Parkway. Photos taken 03/19/06 and by Jeff Waller (10/13/07). |
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Immediately thereafter, U.S. 101 (Bayshore Freeway) north reaches Exit 426B, Sierra Point Parkway to Brisbane. Check out the old-style bridge rail used on the flyover ramp from U.S. 101 north to Bayshore Boulevard. Photos taken 03/19/06 and by Jeff Waller (10/13/07). |
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U.S. 101 leaves South San Francisco and enters the city of Brisbane. Incorporated on November 27, 1961, Brisbane is home to 3,597 people per the 2000 Census and contains 20.44 square miles total (of which 3.44 square miles are land and 17 square miles are water). Photo taken 03/19/06. |
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Both Exits 429A and 429B connect U.S. 101 (Bayshore Freeway) north with Monster Park (formerly 3Com Park and formerly Candlestick Park). The stadium is home to the National Football League's San Francisco 49ers. Photo taken 03/19/06. |
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The section of U.S. 101 (Bayshore Freeway) between the Bayshore Boulevard exit and the Monster Park exit was built on landfill over the bay. A lagoon is located west of U.S. 101, and San Francisco Bay sparkles to the east. Photo taken 03/19/06. |
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Monster Park can be seen on Candlestick Point to the northwest of this point on U.S. 101 north. Photo taken 03/19/06. |
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The right two lanes connect to Exit 429A, Harney Road north to Candlestick Point and Monster Park. The left four lanes continue north on U.S. 101. Photo taken 03/19/06. |
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Northbound U.S. 101 (Bayshore Freeway) reaches Exit 429A, Harney Road north to Monster Park (formerly 3Com Park and formerly Candlestick Park). This is the final interchange in the city of Brisbane. Photo taken 03/19/06. |
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Monster Park on Candlestick Point comes into view as the two-lane exit to Harney Road departs from U.S. 101 north. The blue waters of San Francisco Bay also come into view on the right. Photo taken by Jeff Waller (10/13/07). |
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The next exit along northbound U.S. 101 is Exit 429B, Third Street (and Bayshore Boulevard south). This interchange is located in the city/county of San Francisco. Photo taken 03/19/06. |
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To AT&T Park (formerly Pacific Bell Park and formerly SBC Park), home of Major League Baseball's San Francisco Giants, can be accessed more quickly via Interstate 280 north rather than Third Street. Photo taken 03/19/06. |
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The next three exits along northbound U.S. 101 are Exit 429B, Third Street; Exit 430A, Paul Avenue; and Exit 430B, Interstate 280 north to Mission Bay/South Beach and south to Pacifica. From here, U.S. 101 leaves San Mateo County and enters the city/county of San Francisco. This marks the northern terminus of the Bayshore Freeway and beginning of James Lick Freeway. Photo taken 03/19/06. |
Page Updated February 29, 2008.
