| U.S. Highway 101 over San Mateo Creek | 1928 | 236,000 | Good |
| US 101 Rollins Rd over Transmission Canal | 1928 | 232,000 | Fair |
| US 101 Mcdonnell over Millbrae Slough | 1947 | 226,000 | Fair |
| US 101 W&e Bayshr over San Francisquito Creek | 2018 | 225,800 | Good |
| Holly Street over US Highway 101 | 1954 | 201,000 | Fair |
| Whipple Avenue over US Highway 101 | 1958 | 201,000 | Good |
| U.S. Highway 101 over Marsh Creek | 1930 | 199,000 | Fair |
| U.S. Highway 101 over SR 84 (woodside Road) | 1958 | 199,000 | Good |
| U.S. Highway 101 over Caltrain UP RR Sierra Pt | 1956 | 196,000 | Fair |
| U.S. Highway 101 over Oyster Point Drain | 1995 | 196,000 | Good |
| U.S. Highway 101 over Belmont Creek | 1930 | 195,000 | Good |
| U.S. Highway 101 over Borel Creek | 1954 | 195,000 | Fair |
| U.S. Highway 101 over Cordilleras Creek | 1930 | 195,000 | Poor |
| U.S. Highway 101 over Laurel Creek | 1954 | 195,000 | Good |
| U.S. Highway 101 over Pulgas Creek | 2001 | 195,000 | Good |
| U.S. Highway 101 over Redwood Creek | 1958 | 195,000 | Fair |
| U.S. Highway 101 over UP RR Spur | 1958 | 195,000 | Fair |
| U.S. Highway 101 over Airport Boulevard | 1947 | 188,000 | Fair |
| U.S. Highway 101 over Colma Creek | 1947 | 188,000 | Fair |
| U.S. Highway 101 over North Channel | 1976 | 188,000 | Good |
| U.S. Highway 101 over UP RR Spur | 1948 | 188,000 | Good |
| Interstate 280 over Southgate Avenue | 1967 | 178,000 | Poor |
| Interstate 380 over Caltrain UP RR Bart Etc | 1971 | 150,000 | Fair |
| Interstate 380 over Cherry Avenue | 1971 | 122,000 | Fair |
| State Route 92 over San Francisco Bay | 1967 | 120,000 | Poor |
| Interstate 380 over SR 82 (el Camino Real) | 1971 | 115,000 | Fair |
| Interstate 280 over San Mateo CR Crystal Spr | 1967 | 106,000 | Fair |
| Interstate 280 over Hillside | 1994 | 101,000 | Good |
| Interstate 280 over I 380 & S280-e380 Cnnctr | 1971 | 101,000 | Fair |
| Interstate 280 over San Bruno Avenue | 1971 | 101,000 | Fair |
| Interstate 280 over Stanford Linear Accel | 1965 | 101,000 | Fair |
| US Highway 101 NB over Caltrain UP RR Grand Onr | 1948 | 98,000 | Poor |
| US Highway 101 SB over Caltrain UP RR Grand Onr | 1948 | 98,000 | Poor |
| Interstate 280 NB over Hickey Boulevard | 1967 | 89,000 | Fair |
| Interstate 280 NB over King Drive | 1967 | 89,000 | Fair |
| Interstate 280 NB over Westborough Blvd | 1967 | 89,000 | Fair |
| Interstate 280 SB over Hickey Boulevard | 1967 | 89,000 | Fair |
| Interstate 280 SB over King Drive | 1967 | 89,000 | Fair |
| Interstate 280 SB over Westborough Blvd | 1967 | 89,000 | Good |
| NB State Rte 280 over Serramonte Boulevard | 1967 | 89,000 | Poor |
| SB State Rte 280 over Serramonte Boulevard | 1967 | 89,000 | Poor |
| State Route 92 over Foster City Lagoon | 1967 | 86,000 | Fair |
| Interstate 380 EB over 7TH Avenue | 1976 | 75,000 | Good |
| Interstate 380 EB over US 101 Ramps City St | 1976 | 75,000 | Fair |
| Interstate 380 WB over 7TH Avenue | 1976 | 75,000 | Good |
| Interstate 380 WB over US 101 Ramps City St | 1976 | 75,000 | Fair |
| State Route 92 over Palm Avenue | 1963 | 72,000 | Good |
| State Route 1 over Clarinada Avenue | 1968 | 65,000 | Fair |
| State Route 1 over Lakeshire Drive | 1972 | 65,000 | Fair |
| State Route 1 over St. Francis Boulevard | 1972 | 65,000 | Good |
| Road-1 South over East Undercrossing | 1973 | 64,200 | Fair |
| State Route 92 over De Anza Boulevard | 1967 | 64,000 | Good |
| State Route 84 over San Francisco Bay-south | 1981 | 62,000 | Fair |
| State Route 92 over West Hillsdale Blvd | 1967 | 59,000 | Good |
| EB State Route 92 over Delaware Street | 1963 | 55,500 | Fair |
| Interstate 280 NB over Edgewood Road | 1973 | 55,500 | Fair |
| Interstate 280 NB over Rancho Pulgas Vista Road | 1973 | 55,500 | Fair |
| Interstate 280 NB over Whitman Way | 1967 | 55,500 | Fair |
| Interstate 280 SB over Whitman Way | 1967 | 55,500 | Fair |
| SR 92 EB & Ramps over U.S. 101 Marina Lagoon | 1971 | 55,500 | Good |
| SR 92 WB & Ramps over U.S. 101 Marina Lagoon | 1971 | 55,500 | Fair |
| State Route 280 NB over Hillcrest Boulevard | 1969 | 54,500 | Fair |
| State Route 280 NB over Trousdale Drive | 1969 | 54,500 | Fair |
| State Route 280 SB over Hillcrest Boulevard | 1969 | 54,500 | Fair |
| State Route 280 SB over Trousdale Drive | 1969 | 54,500 | Fair |
| Broadway Ave over U.S. Highway 101 | 2016 | 53,747 | Fair |
| Millbrae Avenue over U.S. Highway 101 | 1947 | 53,747 | Fair |
| Interstate 280 SB over State Route 92 | 1973 | 53,500 | Good |
| State Route 280 NB over Hayne Road | 1969 | 53,500 | Fair |
| State Route 280 SB over Hayne Road | 1969 | 53,500 | Fair |
| WB State Route 92 over Delaware Street | 1963 | 52,500 | Good |
| Interstate 280 NB over State Route 92 | 1973 | 52,000 | Fair |
| Interstate 280 SB over Rancho Pulgas Vista Road | 1973 | 51,500 | Fair |
| NB State Rte 280 over Larkspur Drive | 1969 | 51,500 | Fair |
| SB State Rte 280 over Larkspur Drive | 1969 | 51,500 | Good |
| State Route 114 over U.S. Hwy 101 Ramps | 2019 | 51,000 | Good |
| Interstate 280 NB over Avalon Drive | 1971 | 50,500 | Poor |
| Interstate 280 NB over SR 84 (woodside Exp) | 1969 | 50,500 | Fair |
| Interstate 280 SB over Avalon Drive | 1971 | 50,500 | Poor |
| Interstate 280 SB over SR 84 (woodside Exp) | 1969 | 50,500 | Fair |
| Interstate 280 NB over Canada Road | 1973 | 50,000 | Fair |
| Interstate 280 NB over Service Road | 1973 | 50,000 | Fair |
| Interstate 280 SB over Canada Road | 1969 | 50,000 | Fair |
| Interstate 280 SB over Canada Road | 1973 | 50,000 | Fair |
| Interstate 280 SB over Edgewood Road | 1973 | 50,000 | Fair |
| Interstate 280 SB over Service Road | 1973 | 50,000 | Fair |
| Interstate 280 over Farm Hill Boulevard | 1969 | 50,000 | Poor |
| Sfo-w380 Conn Rmp over N101-san Bruno Off-ramp | 1987 | 50,000 | Fair |
| Interstate 280 NB over Crystal Springs Off-ramp | 1967 | 49,500 | Fair |
| Interstate 280 SB over Crystal Springs Off-ramp | 1967 | 49,500 | Fair |
| WB State Route 92 over Caltrain UP RR Pacific | 1963 | 49,000 | Good |
| W380-n280 Connectr over N280 On-ramp Collector | 1971 | 47,500 | Fair |
| I-280 Northbound over Alpine Rd & Los Trancos | 1969 | 46,500 | Poor |
| I-280 Southbound over Alpine Rd & Los Trancos | 1969 | 46,500 | Fair |
| Interstate 280 NB over San Francisquito Creek | 1969 | 46,500 | Poor |
| Interstate 280 SB over San Francisquito Creek | 1969 | 46,500 | Poor |
| Hillsdale Blvd over Marina Lagoon | 1963 | 46,460 | Poor |
| Interstate 280 NB over Canada Road | 1969 | 44,500 | Fair |
| Interstate 280 NB over Farm Hill Boulevard | 1969 | 44,500 | Poor |
| N101-w380 Connectr over I 380 US 101 7TH Conn | 1976 | 43,500 | Poor |
| State Route 1 over Gateway Drive | 1964 | 43,500 | Good |
| State Route 84 over Caltrain UP RR Shasta St | 1965 | 43,000 | Poor |
| State Route 84 over SR 82 - El Camino Real | 1965 | 43,000 | Fair |
| E380-s101 Connectr over S101-san Bruno Av 7TH Av | 1976 | 42,000 | Poor |
| Ralston Avenue over US Highway 101 | 1974 | 37,234 | Good |
| Ralston Polhemus R over State Route 92 | 1967 | 36,300 | Good |
| EB State Route 92 over Caltrain UP RR Pacific | 1963 | 36,000 | Fair |
| Bayshore Blvd over Recreational Trail | 1928 | 35,000 | Fair |
| State Route 82 over Belmont Creek | 1941 | 34,750 | Fair |
| State Route 82 over Laurel Creek | 1965 | 34,750 | Fair |
| Road-1 South over Mcdonnell Rd | 1970 | 33,710 | Fair |
| Hillsdale Blvd over State Route 82 | 1965 | 33,000 | Good |
| State Route 1 NB over Interstate 280 | 1967 | 32,500 | Good |
| State Route 1 NB over Southgate Avenue | 1968 | 32,500 | Fair |
| State Route 1 SB over Southgate Avenue | 1968 | 32,500 | Fair |
| Road-1 North over Mcdonnell Rd | 1970 | 31,980 | Fair |
| EB State Route 92 over State Route 82 | 1963 | 31,500 | Good |
| WB State Route 92 over State Route 82 | 1963 | 31,500 | Good |
| San Bruno Avenue over U.S. Highway 101 | 1976 | 30,659 | Fair |
| State Route 82 over San Mateo Creek | 1935 | 30,250 | Fair |
| Oyster Point Blvd over US Highway 101 | 1994 | 29,900 | Good |
| John Daly Blvd over Interstate 280 SR 1 | 1965 | 29,660 | Fair |
| Junipero Serra Bl over Interstate 280 | 1965 | 29,300 | Fair |
| Junipero Serra Blv over Interstate 280 | 1965 | 29,300 | Fair |
| State Route 82 over Colma Creek | 1913 | 28,500 | Fair |
| SR 84 (marsh Rd) over US Highway 101 | 1998 | 27,500 | Good |
| State Route 84 over Pedestrian Walkway | 1983 | 27,500 | Good |
| I380 NB On-ramp over US 101 | 1996 | 27,142 | Fair |
| Foster City Blvd over State Route 92 | 1967 | 26,200 | Fair |
| Veterans Blvd over Redwood Creek | 1990 | 26,000 | Fair |
| San Pedro Road over Interstate 280 | 1965 | 25,000 | Fair |
| State Route 82 over Cordilleras Creek | 1915 | 25,000 | Fair |
| University Ave NB over US Highway 101 | 1958 | 24,700 | Fair |
| University Ave SB over US Highway 101 | 1958 | 24,700 | Fair |
| University Ave over San Francisquito Creek | 1925 | 24,200 | Good |
| D St-s280&s1 Onrmp over I 280 Sullivan-s280 Rmp | 1993 | 24,100 | Fair |
| Airport Term On-rp over US 101 | 1996 | 23,880 | Fair |
| State Route 92 over Pilarcitos Creek | 1965 | 23,300 | Good |
| Chestnut Ave over Colma Canal | 1976 | 23,265 | Fair |
| Produce Ave over Colma Creek | 1977 | 22,510 | Fair |
| Sharp Park Road over State Route 1 | 1965 | 22,450 | Fair |
| N101-3rd Av Offrmp over San Mateo Creek | 2004 | 20,000 | Good |
| Sneath Lane over Interstate 280 | 1971 | 20,000 | Fair |
| E380-n101 Connectr over I 380 US 101 Ramps 7TH | 1976 | 19,500 | Fair |
| South Airport Blvd over San Bruno Canal | 2018 | 19,327 | Good |
| Airport Term Off-r over US 101 | 1987 | 19,252 | Fair |
| Departing Flt Trfc over Arriving Flight Traffic | 1973 | 19,170 | Poor |
| Road-1 North over R-1n Off-ramp | 1973 | 19,170 | Fair |
| Road-1 South over R-1s Off-ramp | 1973 | 19,170 | Fair |
| Middlefield Rd over San Francisquito Creek | 1936 | 18,700 | Fair |
| Airport Term Off-r over US 101 | 1996 | 18,400 | Fair |
| East Hillsdale Bl over US Highway 101 | 1954 | 18,300 | Fair |
| Bayshore Hwy over Mills Creek | 1950 | 18,000 | Fair |
| International Via over Airport Access Road | 2001 | 18,000 | Fair |
| Intnl Return Loop over Airport Accs Rds N Mcdon | 2001 | 18,000 | Fair |
| Spruce Ave over Colma Creek | 1975 | 17,332 | Poor |
| S101-w380 Connectr over 7TH Avenue | 1976 | 17,000 | Fair |
| Alpine Rd over San Francisquito Creek | 1950 | 16,957 | Fair |
| Sfo Airprt-s101 on over U.S. Highway 101 | 1987 | 16,900 | Fair |
| State Route 1 NB over Clarendon Road | 1965 | 16,250 | Good |
| State Route 1 SB over Clarendon Road | 1965 | 16,250 | Fair |
| S101-sfo Airpt Off over U.S. Highway 101 | 1987 | 15,900 | Fair |
| State Route 1 over Denniston Creek | 1990 | 15,600 | Fair |
| 3RD Ave-n101 on Rp over San Mateo Creek | 2004 | 15,000 | Good |
| South Airport Blvd over Coloma Creek | 1977 | 15,000 | Fair |
| St Charles Avenue over Interstate 280 | 1965 | 15,000 | Fair |
| Norfolk Street over San Mateo Creek | 2001 | 14,780 | Fair |
| NB State Route 35 over NB & SB Rte 1 and Ramps | 1972 | 14,750 | Fair |
| SB State Route 35 over NB & SB Rte 1 and Ramps | 1972 | 14,750 | Fair |
| State Route 1 NB over Pilarcitos Creek | 1954 | 14,750 | Fair |
| State Route 1 SB over Pilarcitos Creek | 1954 | 14,750 | Good |
| S280-e92 Connector over Interstate 280 SR 92 | 1973 | 14,500 | Fair |
| State Route 1 over Devil Slide | 2009 | 14,500 | Fair |
| State Route 1 over Devil Slide | 2009 | 14,500 | Fair |
| State Route 1 over San Pedro Creek | 2015 | 14,500 | Good |
| S101-3rd Ave Offrp over San Mateo Creek | 1996 | 14,400 | Good |
| Delaware St over Fiesta Channel | 1953 | 14,280 | Good |
| Alameda De Las Pul over State Route 92 | 1963 | 14,000 | Good |
| Middlefield Rd over Redwood Creek | 1989 | 14,000 | Good |
| Fashion Island Dr over Marina Lagoon | 1967 | 13,240 | Fair |
| Sand Hill Road (N) over Interstate 280 | 1969 | 13,000 | Fair |
| Sand Hill Road (S) over Interstate 280 | 1969 | 13,000 | Fair |
| Sneath Ln over Hillside | 1975 | 13,000 | Fair |
| Sneath Ln over Hillside | 1975 | 13,000 | Fair |
| Grand Avenue WB over Caltrain UPRR Industrial | 1984 | 12,955 | Fair |
| Road- 1 South over Pedestrian Walkway | 2001 | 12,930 | Good |
| Road-1 South over Pedestrian Walkway | 1973 | 12,930 | Good |
| Road-1 South over Pedestrian Walkway | 1964 | 12,930 | Good |
| Road-1 South over Pedestrian Walkway | 1973 | 12,930 | Good |
| Road-1 South over Pedestrian Walkway | 1964 | 12,930 | Good |
| Road-1 South over Pedestrian Walkway | 1973 | 12,930 | Good |
| Road-1 South over Pedestrian Walkway | 1973 | 12,930 | Good |
| N101-s84 Connector over Woodside Road | 1958 | 12,600 | Good |
| S101-s84 Connector over UP RR Spur & Veterans Bl | 1972 | 12,200 | Good |
| Utah Ave over Colma Creek | 1975 | 12,150 | Good |
| Third Avenue over San Mateo Creek | 1986 | 12,040 | Good |
| N280-e380 Connectr over San Bruno Av-n280 On-rmp | 1971 | 11,500 | Fair |
| N280-s1 Connector over Southgate Avenue | 1968 | 11,400 | Fair |
| Hillsdale Blvd over Foster City Lagoon | 1964 | 11,372 | Fair |
| Third Avenue over Seal Slough | 1985 | 11,290 | Fair |
| W380-s280 Connectr over I 280 Conn Frntge Rd | 1971 | 10,600 | Fair |
| Sf Airport-s101 on over Airport Property | 1987 | 10,270 | Fair |
| San Bruno Avenue over San Bruno Canal | 1947 | 10,100 | Fair |
| Anza Blvd over Burlingame Lagoon | 1989 | 10,000 | Fair |
| Crystal Springs Rd over Interstate 280 | 1967 | 10,000 | Fair |
| Crystal Springs Rd over San Mateo Creek | 1904 | 10,000 | Fair |
| Crystal Springs Rd over San Mateo Creek | 1904 | 10,000 | Good |
| N&s101-e380 Cnnctr over US 101 Rmps North Chnl | 1976 | 10,000 | Fair |
| Peninsula Avenue over U.S. Highway 101 | 2010 | 10,000 | Good |
| Beach Park Blvd over Foster City Lagoon | 1975 | 9,750 | Fair |
| S280-junipero Serr over Interstate 280 | 1965 | 9,600 | Fair |
| North Access Rd over San Bruno Channel | 1986 | 9,494 | Fair |
| San Mateo Ave over Colma Creek | 1960 | 9,343 | Fair |
| Lathrop St over Redwood Creek | 1955 | 9,000 | Fair |
| Main St over Redwood Creek | 1989 | 9,000 | Fair |
| Norfolk St over Fiesta Channel | 1955 | 8,800 | Fair |
| Industrial Blvd over Cordilleras Creek | 1930 | 8,612 | Fair |
| N280-s1 Connector over I 280 SR 1 & Conns | 1967 | 8,600 | Fair |
| Sullivan-s280 Onrp over S280-s1 Connector Ramp | 1967 | 8,600 | Fair |
| Delaware St over San Mateo Creek | 1910 | 8,530 | Good |
| Access Road over San Bruno Channel | 1948 | 8,252 | Fair |
| Marine Pkwy over Belmont Slough | 1968 | 8,200 | Good |
| N101-bayshore Off over US Highway 101 | 1957 | 8,000 | Poor |
| N101-sfo Arprt Off over Millbrae Av-n101 on Ramp | 2000 | 8,000 | Good |
| Oyster Point-n101 over Oyster Point Drain Clvrt | 1995 | 8,000 | Fair |
| Oyster Point-s101 over US Highway 101 | 1995 | 8,000 | Fair |
| S101-sfo Airpt Off over US 101 2 Airprt-s101 on | 2000 | 8,000 | Good |
| Sfo Airprt-s101 on over U.S. Highway 101 | 2000 | 8,000 | Good |
| Manor Drive over State Route 1 | 1965 | 7,940 | Fair |
| S101-sfo Interntnl over Nb101-sfo Domestic Trmnl | 1996 | 7,630 | Fair |
| 4TH Avenue over San Mateo Creek | 1998 | 7,500 | Fair |
| S1-s35 Connector over State Route 1 | 1972 | 7,500 | Fair |
| San Bruno-n280 Onr over S280-e380 Connector Ramp | 1971 | 7,400 | Fair |
| School Street over Interstate 280 | 1965 | 7,320 | Fair |
| N35-n1 Cnnctr Rmp over Lakeshire Drive | 1972 | 7,300 | Fair |
| Linden Ave over Colma Canal | 1974 | 7,160 | Poor |
| Sand Hill Rd over Bear Gulch Creek | 1950 | 7,137 | Fair |
| Airport Blvd over Burlingame Lagoon | 1970 | 7,000 | Poor |
| Old County Rd over Pulgas Creek | 1920 | 7,000 | Good |
| Oyster Point Blvd over Caltrain & UP RR | 1994 | 7,000 | Fair |
| Oddstad Blvd over South Fork San Pedro Crk | 1948 | 6,886 | Fair |
| I-280 NB Offramp over Los Trancos Creek | 1969 | 6,700 | Fair |
| Junipero Serra-nb1 over Interstate 280 | 1965 | 6,600 | Fair |
| State Route 84 over West Union Creek | 1903 | 6,600 | Fair |
| Haven Ave over Marsh Slough | 1954 | 6,400 | Fair |
| State Route 1 over Pescadero Creek | 1991 | 6,100 | Fair |
| State Route 1 over Pomponio Creek | 1940 | 6,100 | Fair |
| State Route 1 over San Gregorio Creek | 1941 | 6,100 | Fair |
| Grand Ave EB over Caltrain UPRR Industrial | 1984 | 6,009 | Fair |
| State Route 1 over Tunitas Creek | 1962 | 6,000 | Fair |
| Maple Street over US Highway 101 | 1958 | 5,960 | Good |
| S280-san Bruno Off over Interstate 380 (future) | 1973 | 5,785 | Good |
| N280-n35 Cnntr Rmp over Interstate 280 | 1967 | 5,600 | Fair |
| S280-crystal Sp Or over Whitman Way | 1967 | 5,600 | Fair |
| Norfolk St over 16TH Ave Channel | 1953 | 5,590 | Fair |
| Marsh Rd over Marsh Slough | 1960 | 5,300 | Good |
| Foster City Blvd over Foster City Lagoon | 1966 | 5,042 | Fair |
| Foster City Blvd over Foster City Lagoon | 1966 | 5,005 | Fair |
| Stafford St over Cordilleras Creek | 1903 | 5,000 | Fair |
| W380-n&s101 Conn over US 101 I 380 EB Con Rmps | 1976 | 5,000 | Poor |
| Willowbrook Dr over Corte Madera Creek | 1989 | 5,000 | Good |
| Service Road over Guadalupe Channel | 2007 | 4,646 | Good |
| Industrial Way over Belmont Creek | 1950 | 4,592 | Good |
| Third Avenue over US Highway 101 | 1953 | 4,590 | Fair |
| San Pedro Ave over San Pedro Creek | 1996 | 4,500 | Fair |
| State Route 1 over Gazos Creek | 1958 | 4,400 | Good |
| Washington Street over Interstate 280 | 1965 | 4,080 | Fair |
| Fashion Island Bl over US Highway 101 | 1985 | 4,070 | Good |
| Portola Rd over Corte Madera Creek | 1989 | 4,000 | Good |
| Kehoe Avenue over 16TH Avenue Channel | 1955 | 3,910 | Fair |
| N1-s280 Connector over Southgate Avenue | 1968 | 3,850 | Fair |
| N280-w92 Connector over Interstate 280 SR 92 | 1974 | 3,700 | Fair |
| Pacific Blvd over Hillsdale Blvd | 1965 | 3,650 | Fair |
| Crystal Springs Rd over San Mateo Creek | 1901 | 3,630 | Fair |
| Broadway On-ramp over U.S. Highway 101 | 2017 | 3,500 | Good |
| S101-oyster Point over US Highway 101 | 2004 | 3,500 | Good |
| Bunker Hill Drive over Interstate 280 | 1969 | 3,300 | Fair |
| Mariners Isl Blvd over Branch Marina Lagoon | 1999 | 2,970 | Good |
| Portola Road over Alembique Creek | 2021 | 2,969 | Good |
| State Route 84 over La Honda Creek | 1954 | 2,900 | Fair |
| Fremont St over San Mateo Creek | 1920 | 2,890 | Good |
| North B Street over San Mateo Creek | 1924 | 2,790 | Good |
| Los Trancos Rd over Los Trancos Creek | 1989 | 2,700 | Good |
| Pescadero Rd over Butano Creek | 1961 | 2,624 | Good |
| Bridge Dr Parkway over Redwood Shores Lagoon | 1971 | 2,600 | Poor |
| Island Parkway over Autobahn Motors | 2004 | 2,500 | Fair |
| Island Parkway over Marine Pkwy to NB 101 | 2004 | 2,500 | Good |
| Vintage Park Drive over State Route 92 | 1991 | 2,500 | Good |
| Peralta Road over San Pedro Creek | 1984 | 2,389 | Good |
| Main St over Pilarcitos Creek | 1900 | 2,350 | Poor |
| Maple St over Redwood Creek | 1919 | 2,350 | Fair |
| Mariners Island Bl over State Route 92 | 1977 | 2,330 | Good |
| Mariners Isl Blvd over Branch Marina Lagoon | 1999 | 2,150 | Fair |
| Shell Blvd over Foster City Lagoon | 1966 | 2,126 | Fair |
| Shell Blvd over Foster City Lagoon | 1966 | 2,103 | Fair |
| I-280 SB Onramp over Los Trancos Creek | 1969 | 2,100 | Good |
| Kings Mountain Rd over West Union Creek | 1905 | 2,075 | Good |
| Bradford St over Redwood Creek | 1966 | 2,000 | Poor |
| Bermuda Dr over Fiesta Channel | 1955 | 1,920 | Poor |
| Tartan Trail Rd over San Mateo Creek | 1964 | 1,887 | Poor |
| N Claremont over San Mateo Creek | 1920 | 1,830 | Good |
| W380-n101 Connectr over North Channel | 1976 | 1,700 | Fair |
| Crystal Springs Rd over San Mateo Creek | 1974 | 1,637 | Fair |
| Westridge Dr over Corte Madera Creek | 1990 | 1,465 | Fair |
| State Route 84 over El Corte De Madera Creek | 1954 | 1,400 | Good |
| State Route 84 over La Honda Creek | 1957 | 1,400 | Good |
| State Route 84 over La Honda Creek | 1955 | 1,400 | Fair |
| State Route 84 over San Gregorio Creek | 1957 | 1,400 | Fair |
| State Route 84 over San Gregorio Creek | 1957 | 1,400 | Good |
| South Canal Street over Branch of Colma Creek | 1955 | 1,381 | Fair |
| Stage Road over Pescadero Creek | 1961 | 1,230 | Fair |
| Paloma Avenue over State Route 1 | 1965 | 1,118 | Fair |
| N101-sierra Pt Off over Caltrain & UP RR | 1982 | 1,100 | Fair |
| Pescadero Rd over Honsinger Creek | 1957 | 1,084 | Fair |
| Baywood Drive over San Mateo Creek | 1900 | 1,000 | Fair |
| Bridge Dr Parkway over Redwood Shores Lagoon | 1971 | 1,000 | Poor |
| Geri Lane over Sanchez Creek | 1930 | 1,000 | Fair |
| North Access Rd over San Bruno Channel (E) | 1986 | 1,000 | Poor |
| R-1s over R-1s | 1973 | 1,000 | Fair |
| Sierra Drive over San Mateo Creek | 1930 | 1,000 | Good |
| Stonehedge Road over San Mateo Creek | 1900 | 1,000 | Fair |
| Tunnel Ave over UP RR | 2007 | 1,000 | Fair |
| Pescadero Rd over Alpine Creek | 1968 | 848 | Fair |
| Dunman St over Hickey Blvd | 1965 | 823 | Fair |
| Pescadero Rd over Pescadero Creek | 1937 | 720 | Fair |
| Pescadero Rd over Pescadero Creek | 1937 | 620 | Fair |
| Mountain Home Rd over Bear Creek | 1900 | 500 | Fair |
| Higgins Purisima R over Mills Creek | 1914 | 477 | Fair |
| Butano Cut Off over Pescadero Creek | 1964 | 357 | Fair |
| Miramontes St over Arroyo Leon Creek | 1986 | 310 | Fair |
| Bernal Ave over Easton Creek | 1936 | 300 | Fair |
| Stage Rd over San Gregorio Creek | 1981 | 272 | Good |
| Railroad Ave over San Mateo Creek | 1902 | 230 | Fair |
| Gazos Creek Road over Gazos Creek | 1982 | 218 | Poor |
| El Prado Road over Easton Creek | 1956 | 200 | Poor |
| Garage Connector over North/south Garage | 2000 | 200 | Fair |
| Cloverdale Rd over Butano Creek | 1963 | 193 | Fair |
| Bean Hollow Road over Arroyo De Los Frijoles | 1922 | 175 | Fair |
| Otay Ave over Laurel Creek | 1961 | 140 | Fair |
| Canyon Road over Slide | 2000 | 120 | Good |
| Drake Ave over Easton Creek | 1930 | 100 | Fair |
| Drake Ave over Sanchez Creek | 1930 | 100 | Fair |
| Entrada Way over La Honda Creek | 1973 | 100 | Fair |
| Pennsylvania UP RR over Redwood Creek | 1989 | 100 | Good |
| Alpine Road over Alpine Creek | 1920 | 91 | Fair |
| Wurr Rd over Pescadero Creek | 1962 | 91 | Poor |
| Wurr Road over Pescadero Creek | 1962 | 80 | Fair |
| Gazos Creek Road over Hillside | 1983 | 75 | Fair |
| Lobitos Creek Road over Lobitos Creek | 1991 | 73 | Good |
| Main Road over Little Butano Creek | 1980 | 70 | Poor |
| Verdi Road over Purisma Creek | 1987 | 63 | Good |
| Fox Hollow Road over Bear Gulch Creek | 1975 | 50 | Fair |
| Pilarcitos Creek R over Pilarcitos Creek | 1910 | 42 | Poor |
| State Park Rd over Peters Creek | 1948 | 30 | Fair |
| Seaside Sch Rd Shv over Hillside | 1976 | 25 | Fair |
| State Park Rd over Little Butano Creek | 1983 | 25 | Poor |
| Madera Lane over El Corte De Madera Crk | 1920 | 16 | Fair |
| Nimitz Drive over Fork Drive | 1940 | 10 | Good |
| State Park Rd over Pescadero Creek | 2009 | 6 | Good |
| Emergency Exit Rd over Alpine Creek | 1981 | 1 | Fair |
| Grove Drive over Corte Madera Creek | 1985 | 1 | Fair |