Bridge conditions in San Diego County, California 1,632 inventoried bridges · 39 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions 2025 National Bridge Inventory, FHWA Compiled August 20, 2026
39 of the 1,632 bridges the federal inventory lists in San Diego County are rated poor; the rest split 869 good and 724 fair.
39 of the 1,632 bridges in San Diego County, California, are rated in poor condition (2.4%) in the 2025 National Bridge Inventory, as of August 20, 2026 .869 bridges (53.2%) are rated good and 724 (44.4%) fair.
The median San Diego County bridge was built in 1974 .
The busiest poor-rated bridge is Interstate 805 over Telegraph Canyon Drain (built 1971), carrying about 250,000 vehicles a day.
Good 53.2% · Fair 44.4% · Poor 2.4% of 1,632 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 805 over Telegraph Canyon Drain 1971 250,000 Poor Interstate 5 over Rte 163 Connectors 1961 199,000 Poor Interstate 5 over De Anza Off-ramp 1954 101,500 Poor Interstate 5 over Batiquitos Lagoon 1965 98,500 Poor Interstate 5 over Batiquitos Lagoon 1965 98,500 Poor Interstate 5 SB over Nctd BNSF & Amtrak Scrra 1967 96,000 Poor Interstate 5 NB over San Luis Rey River 1970 78,500 Poor E&w54-n805 Connect over Euclid Avenue 1974 62,000 Poor State Route 94 EB over Bancroft Drive 1966 51,000 Poor State Route 52 EB over Mast Bl San Diego River 1993 42,000 Poor Sunset Cliffs Blvd over San Diego River 1951 40,000 Poor Grand Ave over Rose Canyon Creek 1956 39,700 Poor Palomar Street over Interstate 5 1973 31,977 Poor Clairemont Dr over I 5 BNSF Amtrak Morena 1969 30,500 Poor El Cajon Blvd over Spring St Sdiv RR Lrt 1962 25,212 Poor Coast Highway over Loma Alta Creek 2003 22,100 Poor Camino Del Mar over San Elijo Lagoon 1934 20,297 Poor Washington Ave over Reidy Creek 1966 19,600 Poor Main St over Chollas Creek 1937 18,545 Poor Wire Mountain Rd over Interstate 5 1967 17,900 Poor Stuart Mesa Road over Santa Margarita River 1960 15,000 Poor Citrus Ave over Escondido Creek 1971 14,600 Poor Camino Del Mar over San Dieguito River 1932 14,027 Poor Quince Street over Escondido Creek 1965 12,700 Poor N. Coast Highway over San Luis Rey River 1929 12,000 Poor Wabash Blvd (SR15) over Main Street 1954 11,447 Poor Dairy Mart Road over Mesa Creek 1978 9,991 Poor Brooks St over Route 5 1970 9,800 Poor Murray Drive over Mtdb Lrt & Sdiv RR 1988 8,500 Poor W Bernardo Dr over Green Valley Creek 1983 7,200 Poor State Route 94 over Cottonwood Creek 1954 6,900 Poor Pacific St. over Loma Alta Creek 1985 4,320 Poor Grove Street over State Route 94 1957 2,040 Poor Levante Street over Encinitas Creek 2000 1,986 Poor Sycamore Dr over Twin Oaks Valley Creek 1960 1,387 Poor 17TH Street over E St-s5 on Ramp 1928 500 Poor Gunpowder Pt Dr over Sweetwater Marsh 1984 250 Poor Gunpowder Pt Dr over Sweetwater Marsh 1984 250 Poor Pacific Terrace over Cassidy Street 1927 1 Poor
Busiest bridges in the county Bridge Built Vehicles/day Condition Interstate 15 over Mira Mesa Blvd 1977 283,000 Fair Interstate 805 over Bonita Road 1975 272,000 Fair Interstate 805 over Telegraph Canyon Road 1971 254,000 Good Interstate 805 over Telegraph Canyon Drain 1971 250,000 Poor Interstate 5 over San Elijo Lagoon 2022 247,000 Good Interstate 5 over Carmel Valley Rd 1964 245,000 Good Interstate 5 over San Dieguito River 1964 244,000 Fair Interstate 5 over Via De La Valle 1964 244,000 Good Interstate 15 over San Diego River 1960 244,000 Fair Interstate 15 over Rancho Bernardo Rd 1966 243,000 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 .