Bridge conditions in Santa Clara County, California 966 inventoried bridges · 43 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions 2025 National Bridge Inventory, FHWA Compiled August 20, 2026
43 of the 966 bridges the federal inventory lists in Santa Clara County are rated poor; the rest split 407 good and 516 fair.
43 of the 966 bridges in Santa Clara County, California, are rated in poor condition (4.5%) in the 2025 National Bridge Inventory, as of August 20, 2026 .407 bridges (42.1%) are rated good and 516 (53.4%) fair.
The median Santa Clara County bridge was built in 1972 .
The busiest poor-rated bridge is Interstate 880 over North Fourth Street (built 1960), carrying about 165,000 vehicles a day.
Good 42.1% · Fair 53.4% · Poor 4.5% of 966 bridges
Bridges rated poor Every bridge in the county with a poor rating, busiest first. Poor means a major component is rated 4 or lower on FHWA's 0-9 scale; it is a repair flag, not a closure notice.
Bridge Built Vehicles/day Condition Interstate 880 over North Fourth Street 1960 165,000 Poor Interstate 880 over Guadalupe River 1960 165,000 Poor State Route 237 over Mathilda Avenue 1961 68,000 Poor SB US Highway 101 over Coyote Creek 1947 64,000 Poor NB US Highway 101 over Coyote Creek 1947 64,000 Poor Lawrence Expwy over Stevens Creek Blvd 1966 55,150 Poor NB US Highway 101 over Coyote Creek 1980 50,000 Poor S680-s101 Connectr over I 280 I 680 US 101 Story 1982 36,000 Poor Stevens CR Blvd over Calabazas Creek 1978 27,600 Poor Stevens Creek Blvd over Interstate 880 1954 25,000 Poor San Carlos St over Caltrain UPRR BNSF Amtra 1932 25,000 Poor Landess Ave EB over Interstate 680 1974 22,241 Poor Pollard Rd over San Tomas Aquino Creek 1976 20,000 Poor Middlefield Rd over Adobe Creek 1989 20,000 Poor Walsh Ave over San Tomas Aquino Creek 1973 18,000 Poor W237-s85 Connector over Stevens Creek & Trail 1965 16,600 Poor E Charleston Rd over Adobe Creek 1988 16,500 Poor Coleman Off Ramp over De La Cruz Blvd NB 1969 15,000 Poor Homestead Road over State Route 85 1965 14,256 Poor Yosemite Drive over Interstate 680 1974 11,717 Poor Scott Blvd over San Tomas Aquino Creek 1973 11,000 Poor Butterfield Blvd over Railroad Avenue 2013 10,002 Poor Fair Oaks Ave NB over SR 237 Persian Moffett 1966 9,900 Poor Caribbean Dr over Sunnyvale East Channel 1961 9,158 Poor Caribbean Dr over Sunnyvale East Channel 1961 7,906 Poor Great America Pkwy over Agnew Overflow 1957 7,500 Poor Quito Rd over San Tomas Creek 1915 6,740 Poor Tasman Dr over Calabazas Creek 1976 6,584 Poor San Tomas Expwy over UP RR Dell Ave 1968 6,500 Poor Mtn View-alviso Rd over San Tomas Aquino Creek 1973 5,291 Poor Agnew Rd over San Tomas Aquino Creek 1966 5,269 Poor Cowper St over Matadero Creek 1989 5,000 Poor Almaden Nb-lincoln over Almaden Expwy SB 1961 3,000 Poor Waverley St over Matadero Creek 1989 2,500 Poor Lochinvar Ave over Calabazas Creek 1968 2,443 Poor Machado & Calabaza over Calabazas Creek 1961 500 Poor Wrights Station Rd over Los Gatos Creek 1917 110 Poor Alamitos Road over Herbert Creek 1956 70 Poor Alamitos Road over Herbert Creek 1956 70 Poor Aldercroft Hts Rd over Los Gatos Creek 1956 30 Poor Alamitos Road over Herbert Creek 1985 10 Poor Gilroy Hot Spgs Rd over Coyote Creek 1921 10 Poor Railroad Avenue over Wrigley Ford Creek 1920 10 Poor
Busiest bridges in the county Bridge Built Vehicles/day Condition Interstate 280 over 10TH & 11TH Street 1972 250,300 Good Interstate 280 over Coyote Creek 1972 250,300 Fair Interstate 280 over Abandoned UP RR Row 1972 250,300 Good Interstate 280 over San Tomas Expressway 1964 203,000 Fair Interstate 280 over Lawrence Expwy & Creek 1965 203,000 Fair Interstate 280 over Private Road 1969 196,000 Good Interstate 880 over Penitencia Creek 2002 194,000 Good U.S. Highway 101 over Matadero Creek 1960 187,000 Good U.S. Highway 101 over Adobe Creek 1960 187,000 Fair State Route 17 over Interstate 280 & Ramps 1971 184,800 Fair
Source: FHWA National Bridge Inventory , 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
Every bridge in Santa Clara County →
All of California: California bridge conditions by county · every download on the data page .
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected .