Bridge conditions in Stanislaus County, California 386 inventoried bridges · 52 rated poor · 2025 National Bridge Inventory
United States Bridge Conditions 2025 National Bridge Inventory, FHWA Compiled August 20, 2026
Of the 386 Stanislaus County bridges in the federal inventory, 52 carry a poor rating. That 13.5% share is roughly 2x the national average.
52 of the 386 bridges in Stanislaus County, California, are rated in poor condition (13.5%) in the 2025 National Bridge Inventory, as of August 20, 2026 .120 bridges (31.1%) are rated good and 214 (55.4%) fair.
The median Stanislaus County bridge was built in 1963 .
The busiest poor-rated bridge is Briggsmore Road over UP RR & Brink Avenue (built 1976), carrying about 71,797 vehicles a day.
Good 31.1% · Fair 55.4% · Poor 13.5% of 386 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 Briggsmore Road over UP RR & Brink Avenue 1976 71,797 Poor State Route 99 SB over 7TH Street & UP RR 1963 52,500 Poor State Route 99 NB over Tuolumne Blvd 1963 52,500 Poor Mitchell Road over Tuolumne River 1958 37,377 Poor Interstate 5 SB over Hanson Road (private) 1967 20,500 Poor Interstate 5 NB over Hanson Road (private) 1967 20,500 Poor Interstate 5 SB over Del Puerto Creek Road 1967 20,500 Poor Interstate 5 NB over Del Puerto Creek Road 1967 20,500 Poor Interstate 5 SB over Kern Creek Rd (private) 1967 20,500 Poor Interstate 5 NB over Kern Creek Rd (private) 1967 20,500 Poor Interstate 5 SB over Ingram Creek Road 1967 20,500 Poor Interstate 5 NB over Ingram Creek Road 1967 20,500 Poor Interstate 5 SB over Ingram Creek 1967 20,500 Poor State Route 120 over Stanislaus River 1931 18,600 Poor Interstate 5 SB over Fink Road 1967 18,000 Poor Interstate 5 SB over Covell Road (private) 1967 18,000 Poor Interstate 5 NB over Covell Road (private) 1967 18,000 Poor Interstate 5 SB over Oak Flat Road 1967 18,000 Poor Interstate 5 NB over Oak Flat Road 1967 18,000 Poor Interstate 5 SB over Niels Hanson Rd 1967 18,000 Poor Interstate 5 NB over Niels Hanson Rd 1967 18,000 Poor First Street over Stanislaus River 1967 11,900 Poor Sperry Avenue over California Aqueduct 1967 10,820 Poor Woodland Ave over State Route 99 1963 10,500 Poor Beckwith Road over UP RR 1976 9,068 Poor Santa Fe Avenue over T.i.d. Upper Lateral #2 1925 7,057 Poor Crows Landing Road over T.i.d. Lower Lateral #4 1925 5,844 Poor Hickman Road over T.i.d. Main Canal 1924 4,874 Poor Beckwith Road over M.i.d. Lateral #7 1925 4,684 Poor Oakdale-waterford over Claribel Lateral 1920 4,100 Poor East Avenue over T.i.d. Main Canal 1919 4,088 Poor Milnes Road over M.i.d. Main Canal 1922 3,475 Poor Tully Road over M.i.d. Main Canal 1924 3,434 Poor Orange Blossom Rd over Stanislaus River 1967 2,416 Poor Keyes Road over T.i.d. Main Canal 1921 2,313 Poor Stuhr Road over Delta-mendota Canal 1949 2,184 Poor Langworth Road over M.i.d. Main Canal 1925 1,873 Poor La Grange Road over Tuolumne River 1979 1,465 Poor Faith Home Road over T.i.d. Upper Lateral #4 1919 1,461 Poor Reservoir Road over M.i.d. Main Canal 1965 1,200 Poor Upper Road over Newman Wasteway 1953 1,097 Poor Milton Road over Rock Creek Tributary 1918 716 Poor Orestimba Road over Ccid Main Canal 1919 684 Poor Blossom Road over M.i.d. Main Canal 1926 500 Poor Monte Vista Avenue over T.i.d. Ceres Main Canal 1914 473 Poor Moorehead Road over Ccid Main Canal 1926 350 Poor Anderson Road over Ccid Main Canal 1926 333 Poor Mccracken Road over Ingram Creek 1967 296 Poor Sonora Road over Martells Creek 1920 182 Poor W. Stanislaus Road over W Stanislaus I.d. Lat 4 1930 119 Poor Cooperstown Road over Rydberg Creek 1922 37 Poor Cooperstown Road over Gallup Creek 1965 35 Poor
Busiest bridges in the county Bridge Built Vehicles/day Condition State Route 99 over 9TH Street & UP RR 1963 121,000 Fair State Route 99 over Second St-sb 99 on Ramp 1965 101,000 Good State Route 99 over SB 99-north St Off Ramp 1965 101,000 Good State Route 99 over Ceres Main Canal 1941 96,000 Fair State Route 99 over Mitchell Rd 1965 96,000 Fair Briggsmore Road over UP RR & Brink Avenue 1976 71,797 Poor State Route 99 SB over 7TH Street & UP RR 1963 52,500 Poor State Route 99 NB over 7TH Street & UP RR 1963 52,500 Fair State Route 99 SB over Zeff Rd & Tuolumne River 1963 52,500 Good State Route 99 NB over Zeff Rd & Tuolumne River 1963 52,500 Good
Source: FHWA National Bridge Inventory , 2025. Counts cover inventoried highway bridges over 20 feet; ratings are reported by the state DOT.
Every bridge in Stanislaus 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 .