Bridge conditions in Alameda County, California 662 inventoried bridges · 42 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions 2025 National Bridge Inventory, FHWA Compiled August 20, 2026
The federal inventory lists 662 bridges in Alameda County: 264 rated good, 356 fair, and 42 poor.
42 of the 662 bridges in Alameda County, California, are rated in poor condition (6.3%) in the 2025 National Bridge Inventory, as of August 20, 2026 .264 bridges (39.9%) are rated good and 356 (53.8%) fair.
The median Alameda County bridge was built in 1970 .
The busiest poor-rated bridge is Interstate 880 over Crandall Creek (built 1958), carrying about 225,000 vehicles a day.
Good 39.9% · Fair 53.8% · Poor 6.3% of 662 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 Crandall Creek 1958 225,000 Poor Interstate 880 over Patterson Slough 1957 198,000 Poor Interstate 680 over State Route 84 SB & Off 1967 142,000 Poor Interstate 680 over Bernal Ave 1967 136,000 Poor Interstate 680 over Happy Valley Road 1967 124,000 Poor Interstate 680 over Pleasanton-sunol Road 1967 122,000 Poor Interstate 580 over Cerrito Creek 1991 99,000 Poor Interstate 580 WB over Crow Creek 1988 98,500 Poor Interstate 680 NB over State Route 237 (future) 1971 61,000 Poor Interstate 680 SB over E Warren Ave 1971 61,000 Poor Interstate 680 NB over E Warren Ave 1971 61,000 Poor Interstate 680 SB over SR 262 (mission Blvd) 1971 61,000 Poor Interstate 680 NB over SR 262 (mission Blvd) 1971 61,000 Poor Interstate 680 SB over Dept of Water Resources 1971 60,500 Poor Interstate 680 SB over Koopman Road 1967 59,000 Poor State Route 13 SB over Moraga Ave 1964 57,000 Poor State Route 13 NB over Moraga Ave 1964 57,000 Poor Winton Ave over Interstate 880 1968 52,800 Poor N13-w80 Connector over I 80 & W80-s13 Connector 1955 30,000 Poor N238-w580 Connectr over Castro Valley Blvd 1988 23,200 Poor Park Blvd over State Route 13 1956 22,979 Poor Auto Mall Parkway over Interstate 680 1971 21,534 Poor High St over Oakland Estuary 1939 19,900 Poor Vallecitos Road over Arroyo Del Valle 1940 19,250 Poor 22ND & 23RD Avenue over UP RR BNSF Amtrak Bartd 1962 17,278 Poor Washington Blvd over Interstate 680 1971 17,017 Poor Adeline Street over UP RR BNSF Ry Amtrak 1978 13,375 Poor Five Canyons Pkwy over Canyon "d" 2002 11,800 Poor Stevenson Blvd over Interstate 880 1997 10,500 Poor Redwood Road over State Route 13 1966 10,000 Poor 98TH Ave over San Leandro Creek 1939 7,991 Poor Grant Line Road over Delta-mendota Canal 1948 5,100 Poor Greenville Rd over Arroyo Seco 1962 4,300 Poor Plsntn-snl Rd-s680 over Pleasanton-sunol Road 1967 3,550 Poor Williams St over Interstate 880 1994 3,000 Poor Arroyo Road over Dry Creek 1930 2,800 Poor Old Dublin Road over San Lorenzo Creek 1927 2,120 Poor Mines Rd over Arroyo Mocho 1987 1,930 Poor Grant Line Rd over California Aqueduct 1963 1,000 Poor Del Valle Rd over Lake Del Valle 1964 900 Poor Mines Road over Arroyo Mocho 1988 500 Poor Channel Drive over Lake 1966 390 Poor
Busiest bridges in the county Bridge Built Vehicles/day Condition Interstate 80 over Gilman Street 1955 550,000 Good Interstate 80 over Powell Street 1954 531,000 Good Interstate 80 over Buried Walkway 1954 531,000 Fair Interstate 80 over Temescal Creek 1936 288,000 Good Interstate 580 over Maple Ave 1963 274,000 Fair Interstate 80 WB over UP BNSF Amtrak E80-w580 1960 271,000 Good I 80-i 880 Conn over SB 880 I 80 W Grand 1996 269,472 Fair I 80 WB over Utility Tunnel & Puc 1949 265,000 Fair Interstate 580 over Dougherty Drain 1970 254,000 Good Interstate 580 over Chabot Canal 1994 254,000 Good
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 .