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Bridge conditions in Santa Clara County, California

966 inventoried bridges · 43 rated poor · 2025 National Bridge Inventory

United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled 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.

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.