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)

SR 120 EB

Fair

Over: UP RR & ACE

10-SJ-120-R1.81, San Joaquin, CA

Built 1980 Load: 54.1 t ADT: 37,500

STANLEY ROAD

Fair

Over: LITTLEJOHNS CREEK

0.6 MI SOUTH OF SH4, San Joaquin, CA

Built 1974 Load: 54.1 t ADT: 132

ORANGE ST

Fair

Over: WOODBRIDGE ID MAIN CANAL

0.05 MI S OF INDIANA ST, San Joaquin, CA

Built 1980 Load: 55.7 t ADT: 95

DRAIS RD

Fair

Over: NORTH BRANCH CHANNEL A

0.4 MI S COPPEROPOLIS RD, San Joaquin, CA

Built 1976 Load: 57.3 t ADT: 314

BLOSSOM ROAD

Fair

Over: BEAVER SLOUGH

1 MI N OF PELTIER, San Joaquin, CA

Built 1980 Load: 58.3 t ADT: 251

THORNTON ROAD

Good

Over: MOSHER SLOUGH

S DAVIS RD IN TX, San Joaquin, CA

Built 1931 Load: 16.2 t ADT: 26,616

ESCALON-BELLOTA RD

Good

Over: TEMPLE CREEK BRANCH

0.2 MI N OF SKIFF RD, San Joaquin, CA

Built 1926 Load: 16.2 t ADT: 2,194

GAWNE RD

Good

Over: DRAIN A

0.7 MI E MARIPOSA RD, San Joaquin, CA

Built 1935 Load: 16.2 t ADT: 427

WAGNER RD

Good

Over: SSJID CANAL

.01 MI N OF RIVER RD, San Joaquin, CA

Built 1928 Load: 16.2 t ADT: 328

MURPHY ROAD

Good

Over: DRAIN CANAL

2.8 MI S OF MARIPOSA RD, San Joaquin, CA

Built 1926 Load: 16.2 t ADT: 520

HANSEN ROAD

Good

Over: CALIFORNIA AQUEDUCT

0.8 MI S OF W SCHULTE RD, San Joaquin, CA

Built 1965 Load: 17.5 t ADT: 1,932

PELTIER ROAD

Good

Over: MOKELUMNE RIVER

1.5 MI W LOWER SACRMTO RD, San Joaquin, CA

Built 1947 Load: 17.8 t ADT: 2,972

PACIFIC AVE

Good

Over: CALAVERAS RIVER

0.25 MI N FULTON ST, San Joaquin, CA

Built 1921 Load: 18.1 t ADT: 18,350

MARIPOSA ROAD

Good

Over: WEBER CREEK

0.8 MI W OF JACK TONE RD, San Joaquin, CA

Built 1934 Load: 18.1 t ADT: 4,138

CORD ROAD

Good

Over: BEAR CREEK BRANCH

0.2 MI S OF SR 12, San Joaquin, CA

Built 1978 Load: 18.5 t ADT: 50

ESCALON-BELLOTA RD

Good

Over: DUCK CREEK

0.4 MI NORTH OF S.H. 4, San Joaquin, CA

Built 1928 Load: 19.1 t ADT: 1,607

MARIPOSA ROAD

Good

Over: NORTH LITTLE JOHNS CREEK

0.5 MI W AUSTIN RD, San Joaquin, CA

Built 1934 Load: 20.1 t ADT: 3,500

MURPHY ROAD

Good

Over: ROADSIDE DRAIN

0.1 MI S OF MARIPOSA RD, San Joaquin, CA

Built 1926 Load: 20.4 t ADT: 520

MURPHY ROAD

Good

Over: ROADSIDE DRAIN

0.7 MI S OF MARIPOSA RD, San Joaquin, CA

Built 1926 Load: 20.4 t ADT: 520

MURPHY ROAD

Good

Over: IRRIGATION DITCH

1.0 MI S OF MARIPOSA RD, San Joaquin, CA

Built 1926 Load: 20.4 t ADT: 520

DAVIS ROAD

Good

Over: KETTLEMAN SLOUGH

1.0 MI N OF 8 MILE ROAD, San Joaquin, CA

Built 1928 Load: 20.7 t ADT: 5,015

DR MLK JR BLVD

Good

Over: MORMON SLOUGH

0.3 MI EAST OF MARIPOSA, San Joaquin, CA

Built 1949 Load: 21.1 t ADT: 12,500

INTERSTATE 5 NB

Good

Over: FOURTEEN MILE SLOUGH

10-SJ-005-31.00-STKN, San Joaquin, CA

Built 1968 Load: 21.7 t ADT: 111,000

COTTA ROAD

Good

Over: UPLAND CANAL

1.0 MI W OF I-5, San Joaquin, CA

Built 1974 Load: 22.0 t ADT: 138

INTERSTATE 580 WB

Good

Over: CORRAL HOLLOW CREEK

10-SJ-580-7.88, San Joaquin, CA

Built 1966 Load: 22.4 t ADT: 16,000

STATE ROUTE 99

Good

Over: PIXLEY SLOUGH

10-SJ-099-26.86, San Joaquin, CA

Built 1930 Load: 22.7 t ADT: 60,500

STATE ROUTE 99

Good

Over: MOSHER SLOUGH

10-SJ-099-24.41, San Joaquin, CA

Built 1930 Load: 22.7 t ADT: 64,000

S ACCESS RD

Good

Over: N FK S LITTLEJOHNS CREEK

1 MI S MARIPOSA RD, San Joaquin, CA

Built 1954 Load: 22.7 t ADT: 3,202

STATE ROUTE 99 SB

Good

Over: STANISLAUS RIVER

10-SJ-099-0.00, San Joaquin, CA

Built 1903 Load: 23.0 t ADT: 53,500

STATE ROUTE 88

Good

Over: MOSHER SLOUGH

10-SJ-088-7.53, San Joaquin, CA

Built 1925 Load: 23.7 t ADT: 15,859

ELLIOT ROAD

Good

Over: MOKELUMNE RIVER

1.0 MI S PELTIER RD, San Joaquin, CA

Built 1955 Load: 23.7 t ADT: 2,513

AIRPORT WAY

Good

Over: NORTH LITTLE JOHNS CREEK

0.15 MI N INDUSTRIAL WAY, San Joaquin, CA

Built 1961 Load: 23.7 t ADT: 13,100

AUSTIN ROAD

Good

Over: S FK S LITTLEJOHNS CREEK

2 MI N FRENCH CAMP RD, San Joaquin, CA

Built 1969 Load: 24.0 t ADT: 594

PEARSON RD

Good

Over: PIXLEY SLOUGH

0.7 MI N MORSE RD, San Joaquin, CA

Built 1970 Load: 24.3 t ADT: 415

BUENA VISTA ROAD

Good

Over: MURPHY CREEK

2.1 MI EAST TO S.H. 88, San Joaquin, CA

Built 1960 Load: 24.3 t ADT: 91

KAISER ROAD

Good

Over: SOUTH BRANCH WEBER CREEK

0.5 MI S MARIPOSA RD, San Joaquin, CA

Built 1970 Load: 24.3 t ADT: 276

KAISER ROAD

Good

Over: NORTH BRANCH WEBER CREEK

0.2 MI S MARIPOSA RD, San Joaquin, CA

Built 1970 Load: 24.3 t ADT: 235

WAVERLY RD

Good

Over: CHANNEL B

0.2 MI N OF FLOOD RD, San Joaquin, CA

Built 1961 Load: 24.3 t ADT: 249

MICKE GROVE RD

Good

Over: PIXLEY CREEK

0.7 MI S ARMSTRONG RD, San Joaquin, CA

Built 1970 Load: 24.3 t ADT: 1,079

DUNCAN RD

Good

Over: CHANNEL B

0.3 MI N COPPEROPOLIS RD, San Joaquin, CA

Built 1963 Load: 24.3 t ADT: 353

INTERSTATE 5 SB

Good

Over: UP RAILROAD & FARM ROADS

10-SJ-005-10.65, San Joaquin, CA

Built 1971 Load: 24.6 t ADT: 12,450

INTERSTATE 5 NB

Good

Over: UP RAILROAD & FARM ROADS

10-SJ-005-10.65, San Joaquin, CA

Built 1971 Load: 24.6 t ADT: 11,000

LONE TREE RD

Good

Over: LONE TREE CREEK

2.2 MI W OF CO LINE, San Joaquin, CA

Built 1922 Load: 24.6 t ADT: 1,022

MARIPOSA ROAD

Good

Over: WEBER CREEK BRANCH

0.5 MI E JACK TONE RD, San Joaquin, CA

Built 1934 Load: 24.9 t ADT: 6,626

COPPEROPOLIS RD

Good

Over: MORMON SLOUGH

1.5 MI EAST MILTON RD, San Joaquin, CA

Built 1966 Load: 25.3 t ADT: 2,249

MARIPOSA ROAD

Good

Over: DUCK CREEK S BRANCH

0.8 MI S/E OF S.H. 99, San Joaquin, CA

Built 1934 Load: 25.6 t ADT: 5,449

AIRPORT WAY

Good

Over: NORTH BRANCH WEBER CREEK

JUST NORTH OF SPERRY, San Joaquin, CA

Built 1961 Load: 25.9 t ADT: 12,000

JACK TONE ROAD

Good

Over: PADDY CREEK NORTH

NEAR KETTLEMAN LANE, San Joaquin, CA

Built 1962 Load: 26.2 t ADT: 2,471

LONE TREE RD

Good

Over: LONE TREE CREEK

0.3 MI W OF STA CO LINE, San Joaquin, CA

Built 1922 Load: 26.2 t ADT: 1,022

MUNFORD AVENUE

Good

Over: DUCK CREEK S BRANCH

0.2 MI W OF E. MARIPOSA, San Joaquin, CA

Built 1964 Load: 26.6 t ADT: 323

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

Related

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