San Joaquin County, CA

666 public highway bridges

San Joaquin County Bridge Snapshot

San Joaquin County, California contains 666 public highway bridges in the FHWA National Bridge Inventory. Roughly 25.5% are rated “Good,” 38.9% “Fair,” 6.2% “Poor,” and 6.2% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in CA are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

666

Total Bridges

25.5%

Good

6.2%

Poor

6.2%

Structurally Deficient

Condition Distribution

Good

25.5% (170)

Fair

38.9% (259)

Poor

6.2% (41)

SD

6.2% (41)

All Bridges (666)

Sort:

HIBBARD ROAD

Over: SOUTH PADDY CREEK

0.4 MI N OF ATKINSON, San Joaquin, CA

Built 1964 Load: 34.7 t ADT: 205

LIVE OAK RD

Over: BEAR CREEK

0.7 MI E ALPINE RD, San Joaquin, CA

Built 1963 Load: 34.7 t ADT: 431

HARNEY LANE

Over: NORTH PADDY CREEK

0.5 MI E OF S.H.88, San Joaquin, CA

Built 1964 Load: 34.7 t ADT: 1,882

HARNEY LANE

Over: BEAR CREEK

0.03 MI E OF S.H. 88, San Joaquin, CA

Built 1964 Load: 34.7 t ADT: 1,882

INTERSTATE 580 EB

Over: UP RR & ACE

10-SJ-580-11.51, San Joaquin, CA

Built 1967 Load: 35.0 t ADT: 13,300

INTERSTATE 580 WB

Over: UP RR & ACE

10-SJ-580-11.51, San Joaquin, CA

Built 1967 Load: 35.0 t ADT: 13,300

INTERSTATE 580 EB

Over: VALLEY VIEW RD

10-SJ-580-11.30, San Joaquin, CA

Built 1966 Load: 35.0 t ADT: 13,300

ELLIOTT RD

Over: COYOTE CREEK

0.5 MI N OF LIBERTY RD, San Joaquin, CA

Built 1972 Load: 35.0 t ADT: 1,120

ODELL AVENUE

Over: WALKER SLOUGH

NORTH OF DOWNING AVE, San Joaquin, CA

Built 1970 Load: 35.6 t ADT: 1,814

INTERSTATE 580

Over: HANSEN ROAD

10-SJ-580-12.03, San Joaquin, CA

Built 1967 Load: 36.0 t ADT: 13,300

CLEMENTS RD

Over: CALAVERAS RIVER

0.4 MI N COMSTOCK RD, San Joaquin, CA

Built 1969 Load: 36.3 t ADT: 1,146

PERSHING AVE

Over: SMITH CANAL

JUST NORTH HARDING WAY, San Joaquin, CA

Built 1952 Load: 36.3 t ADT: 29,100

INTERSTATE 5 SB

Over: BNSF RY & AMTRAK

10-SJ-005-25.78-STKN, San Joaquin, CA

Built 1972 Load: 36.6 t ADT: 87,500

WIMAR ROAD

Over: INDIAN CREEK N BRANCH

1.2 MI S OF SR 26, San Joaquin, CA

Built 1956 Load: 36.6 t ADT: 34

HOLLENBECK

Over: DUCK CREEK

0.1 MI N OF SH 4, San Joaquin, CA

Built 1968 Load: 36.6 t ADT: 68

STATE ROUTE 99 NB

Over: CALAVERAS RIVER

10-SJ-099-21.79, San Joaquin, CA

Built 1949 Load: 36.9 t ADT: 35,500

INTERSTATE 5 NB

Over: BNSF RY & AMTRAK

10-SJ-005-25.78-STKN, San Joaquin, CA

Built 1972 Load: 37.3 t ADT: 43,750

STATE ROUTE 12

Over: MOKELUMNE RIVER

10-SJ-012-0.01, San Joaquin, CA

Built 1942 Load: 37.6 t ADT: 15,000

INTERSTATE 580

Over: HANSEN ROAD

10-SJ-580-12.03, San Joaquin, CA

Built 1967 Load: 37.6 t ADT: 13,300

EL DORADO ST

Over: MOSHER SLOUGH

0.2 MI N GLENCANNON ST, San Joaquin, CA

Built 1969 Load: 37.9 t ADT: 9,676

99 FRONTAGE RD E

Over: PIXLEY SLOUGH

0.6 MI S ARMSTRONG RD, San Joaquin, CA

Built 1964 Load: 38.6 t ADT: 2,155

99 FRONTAGE RD W

Over: PIXLEY SLOUGH

0.6 MI S ARMSTRONG RD, San Joaquin, CA

Built 1964 Load: 39.5 t ADT: 3,498

INTERSTATE 5 NB

Over: HOSPITAL ROAD

10-SJ-005-R21.70, San Joaquin, CA

Built 1971 Load: 40.2 t ADT: 42,250

KAISER ROAD

Over: N FK S LITTLEJOHNS CREEK

1.5 MI S MARIPOSA RD, San Joaquin, CA

Built 1954 Load: 40.2 t ADT: 76

INTERSTATE 580 EB

Over: VALPICO ROAD

10-SJ-580-9.71, San Joaquin, CA

Built 1966 Load: 40.5 t ADT: 13,300

INTERSTATE 580 WB

Over: VALPICO ROAD

10-SJ-580-9.71, San Joaquin, CA

Built 1966 Load: 40.5 t ADT: 13,300

FLOOD ROAD

Over: MORMON SLOUGH

0.9 MI WEST OF FINE ROAD, San Joaquin, CA

Built 1973 Load: 40.8 t ADT: 401

INTERSTATE 5 SB

Over: TOM PAINE SLOUGH

10-SJ-005-R12.39, San Joaquin, CA

Built 1971 Load: 41.1 t ADT: 23,750

INTERSTATE 5 NB

Over: TOM PAINE SLOUGH

10-SJ-005-R12.39, San Joaquin, CA

Built 1971 Load: 41.1 t ADT: 23,750

INTERSTATE 5 SB

Over: MOSHER SLOUGH

10-SJ-005-33.50, San Joaquin, CA

Built 1975 Load: 42.1 t ADT: 48,000

INTERSTATE 5 SB

Over: FRENCH CAMP SLOUGH

10-SJ-005-R23.25, San Joaquin, CA

Built 1971 Load: 42.4 t ADT: 87,500

INTERSTATE 5 NB

Over: FRENCH CAMP SLOUGH

10-SJ-005-R23.25, San Joaquin, CA

Built 1971 Load: 42.4 t ADT: 43,750

STATE ROUTE 132 W

Over: DELTA-MENDOTA CANAL

10-SJ-132-2.95, San Joaquin, CA

Built 1966 Load: 42.8 t ADT: 7,750

STATE ROUTE 132 E

Over: DELTA-MENDOTA CANAL

10-SJ-132-2.95, San Joaquin, CA

Built 1971 Load: 42.8 t ADT: 7,750

INTERSTATE 5 SB

Over: BEAVER SLOUGH

10-SJ-005-45.87, San Joaquin, CA

Built 1979 Load: 43.7 t ADT: 25,000

INTERSTATE RTE 5 S

Over: HOSPITAL CREEK

10-SJ-005-1.10, San Joaquin, CA

Built 1971 Load: 44.7 t ADT: 11,400

INTERSTATE RTE 5 N

Over: HOSPITAL CREEK

10-SJ-005-1.10, San Joaquin, CA

Built 1971 Load: 44.7 t ADT: 11,400

FINE RD

Over: CHANNEL A

0.01 MI N FLOOD RD, San Joaquin, CA

Built 1972 Load: 44.7 t ADT: 801

WALKER LANE

Over: MORMON SLOUGH

0.3 MI S MAIN ST, San Joaquin, CA

Built 1974 Load: 45.7 t ADT: 1,615

AIRPORT WAY

Over: SAN JOAQUIN RIVER 06

0.5 MI NE OF KASSON RD, San Joaquin, CA

Built 1965 Load: 46.0 t ADT: 2,042

STATE ROUTE 132 W

Over: CALIFORNIA AQUEDUCT

10-SJ-132-0.81, San Joaquin, CA

Built 1966 Load: 46.3 t ADT: 7,750

STATE ROUTE 132 E

Over: CALIFORNIA AQUEDUCT

10-SJ-132-0.81, San Joaquin, CA

Built 1966 Load: 46.3 t ADT: 7,750

INTERSTATE RTE 5 S

Over: GAFFERY ROAD

10-SJ-005-0.30L, San Joaquin, CA

Built 1971 Load: 46.7 t ADT: 10,800

INTERSTATE 580 EB

Over: UP RR & ACE

10-SJ-580-12.76, San Joaquin, CA

Built 1967 Load: 47.0 t ADT: 13,300

INTERSTATE 580 WB

Over: UP RR & ACE

10-SJ-580-12.74, San Joaquin, CA

Built 1967 Load: 47.0 t ADT: 13,300

PARADISE ROAD

Over: TOM PAINE SLOUGH

0.1 MI S OF CANAL BLVD, San Joaquin, CA

Built 1980 Load: 48.3 t ADT: 912

INTERSTATE 5 NB

Over: CALIFORNIA AQUEDUCT

10-SJ-005-2.00, San Joaquin, CA

Built 1966 Load: 49.9 t ADT: 11,400

JACK TONE ROAD

Over: S FK S LITTLEJOHNS CREEK

1.7 MI S MARIPOSA RD, San Joaquin, CA

Built 1955 Load: 49.9 t ADT: 2,204

JACKTONE RD

Over: SOUTH FORK COYOTE CREEK

0.2 MI N OF LIBERTY ROAD, San Joaquin, CA

Built 1976 Load: 52.5 t ADT: 117

BRANDT RD

Over: BEAR CREEK

0.5 MI E JACK TONE RD, San Joaquin, CA

Built 1973 Load: 53.8 t ADT: 1,270

Read our methodology — how this data is sourced, computed, and verified.

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 6, 2026