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:

MILTON ROAD

Over: CHANNEL A

0.5 MI W OF FINE RD, San Joaquin, CA

Built 1927 Load: 15.6 t ADT: 301

SEXTON RD

Over: SSJID CANAL

0.2 MI N OF RIVER RD, San Joaquin, CA

Built 1941 Load: 15.6 t ADT: 210

KOSTER RD

Over: HOSPITAL CREEK OVERFLOW

0.5 MI N GAFFERY RD, San Joaquin, CA

Built 1947 Load: 15.6 t ADT: 390

BOLLEA ROAD

Over: BEAR CREEK

NEAR CALAVERAS CO LINE, San Joaquin, CA

Built 1997 Load: 15.6 t ADT: 26

GAWNE ROAD

Over: DRAIN B

0.3 MI E NELSON RD, San Joaquin, CA

Built 1935 Load: 16.2 t ADT: 709

MESSICK ROAD

Over: MOSHER SLOUGH

0.6 MI W OF CLEMENTS RD, San Joaquin, CA

Built 1931 Load: 16.2 t ADT: 150

HENRY RD

Over: SSJID CANAL

AT N INTERSECT W RIVER RD, San Joaquin, CA

Built 1945 Load: 16.2 t ADT: 2,375

VAN ALLEN RD

Over: SSJID CANAL

0.2 MI N OF RIVER RD, San Joaquin, CA

Built 1928 Load: 16.2 t ADT: 240

CARROLTON ROAD

Over: SSJID CANAL

0.2 MI N OF RIVER RD, San Joaquin, CA

Built 1940 Load: 16.2 t ADT: 545

INTERSTATE 5 NB

Over: BEAVER SLOUGH

10-SJ-005-45.86, San Joaquin, CA

Built 1979 Load: 16.5 t ADT: 25,000

LAMMERS ROAD

Over: DELTA-MENDOTA CANAL

0.8 MI S VALPICO ROAD, San Joaquin, CA

Built 1950 Load: 16.8 t ADT: 1,439

EIGHT MILE ROAD

Over: WHITE SLOUGH (HONKER CUT

5 MI WEST OF I-5, San Joaquin, CA

Built 1936 Load: 17.2 t ADT: 958

WOODSON ROAD

Over: JAHANT SLOUGH

0.4 MI NE OF JAHANT & 99, San Joaquin, CA

Built 1930 Load: 17.2 t ADT: 700

KOSTER ROAD

Over: DELTA-MENDOTA CANAL

1.6 MI N GAFFERY RD, San Joaquin, CA

Built 1950 Load: 17.5 t ADT: 400

THORNTON ROAD

Over: BEAVER SLOUGH

1 MI N PELTIER ROAD, San Joaquin, CA

Built 1958 Load: 18.1 t ADT: 1,232

CORD ROAD

Over: BEAR CREEK BRANCH

.5 MI S OF SR 12, San Joaquin, CA

Built 1968 Load: 18.1 t ADT: 15

LONE TREE RD

Over: LONE TREE CREEK

1.4 MI WEST MURPHY RD, San Joaquin, CA

Built 1928 Load: 18.5 t ADT: 1,104

MACARTHUR DRIVE

Over: DELTA-MENDOTA CANAL

2.6 MI S LINNE ROAD, San Joaquin, CA

Built 1950 Load: 19.1 t ADT: 2,165

ESCALON-BELLOTA RD

Over: TEMPLE CREEK

NORTH OF SKIFF RD, San Joaquin, CA

Built 1925 Load: 19.4 t ADT: 2,194

CORRAL HOLLOW ROAD

Over: DELTA-MENDOTA CANAL

1.5 MI N OF I-580, San Joaquin, CA

Built 1947 Load: 19.4 t ADT: 1,006

TRACY BOULEVARD

Over: GRANT LINE CANAL

3 MI N OF I 205, San Joaquin, CA

Built 1959 Load: 20.1 t ADT: 4,513

INTERSTATE 5

Over: MOKELUMNE RIVER

10-SJ-005-49.78, San Joaquin, CA

Built 1979 Load: 20.7 t ADT: 26,500

INTERSTATE 5

Over: MOKELUMNE RIVER

10-SJ-005-49.78, San Joaquin, CA

Built 1979 Load: 20.7 t ADT: 26,500

CALIFORNIA AVE

Over: TOM PAINE SLOUGH

0.2 MI S OF CANAL BLVD, San Joaquin, CA

Built 1957 Load: 20.7 t ADT: 748

VAN ALLEN ROAD

Over: TEMPLE CREEK N BRANCH

0.3 MI S OF GAWNE RD, San Joaquin, CA

Built 1927 Load: 21.1 t ADT: 641

THORNTON ROAD

Over: BEAVER SLOUGH

0.75 MI S KILE RD, San Joaquin, CA

Built 1941 Load: 21.4 t ADT: 1,232

VAN ALLEN RD

Over: LONE TREE CREEK

0.5 MI S OF LONE TREE RD, San Joaquin, CA

Built 1928 Load: 21.7 t ADT: 573

STATE ROUTE 99 NB

Over: MOKELUMNE RI,FRONTAGE R

10-SJ-099-31.72, San Joaquin, CA

Built 1930 Load: 22.0 t ADT: 29,500

INTERSTATE 205

Over: DELTA-MENDOTA CANAL

10-SJ-205-0.15, San Joaquin, CA

Built 1953 Load: 22.0 t ADT: 106,000

INTERSTATE 580 EB

Over: CORRAL HOLLOW CREEK

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

Built 1966 Load: 22.4 t ADT: 16,000

INTERSTATE 5 SB

Over: DOWNING AVENUE

10-SJ-005-R23.66, San Joaquin, CA

Built 1971 Load: 22.4 t ADT: 43,750

STATE ROUTE 99 SB

Over: CALAVERAS RIVER

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

Built 1930 Load: 23.0 t ADT: 35,500

RIO BLANCO ROAD

Over: TELEPHONE CUT

1.0 MI N. 8 MI RD, San Joaquin, CA

Built 1953 Load: 23.0 t ADT: 160

MANTHEY ROAD

Over: PARADISE CUT

1.2 MI S/W STEWART RD, San Joaquin, CA

Built 1932 Load: 23.3 t ADT: 50

HAM LANE

Over: PIXLEY SLOUGH

0.1MI S/O WEST LANE, San Joaquin, CA

Built 1926 Load: 23.7 t ADT: 457

INTERSTATE 5 SB

Over: ROTH ROAD

10-SJ-005-R19.58, San Joaquin, CA

Built 1971 Load: 24.0 t ADT: 84,500

STATE ROUTE 120

Over: SO SAN JOAQUIN IRR CANAL

10-SJ-120-21.17, San Joaquin, CA

Built 1938 Load: 24.3 t ADT: 18,200

INTERSTATE 5

Over: CARLTON AVE

10-SJ-005-27.66-STKN, San Joaquin, CA

Built 1970 Load: 24.3 t ADT: 113,000

EIGHT MILE ROAD

Over: PIXLEY CREEK

AT WEST LANE., San Joaquin, CA

Built 1963 Load: 24.3 t ADT: 14,064

WEST LANE

Over: PIXLEY SLOUGH

0.7 MI N/O EIGHT MI RD, San Joaquin, CA

Built 1962 Load: 24.3 t ADT: 12,583

WEST LANE

Over: WOODBRIDGE S MAIN CANAL

0.7 MI S ARMSTRONG RD, San Joaquin, CA

Built 1963 Load: 24.3 t ADT: 13,343

AIRPORT WAY

Over: S BR WEBER CREEK

1.2 MI N FRENCH CAMP RD, San Joaquin, CA

Built 1961 Load: 24.3 t ADT: 8,754

JACK TONE ROAD

Over: LONE TREE CREEK

1.2 MI N LONE TREE RD, San Joaquin, CA

Built 1962 Load: 24.3 t ADT: 1,761

COLLIER RD

Over: DRAIN DITCH

0.3 MI E OF SOWLES RD, San Joaquin, CA

Built 1972 Load: 24.3 t ADT: 1,084

ELLIOTT RD

Over: DRY CREEK OVERFLOW

1 MI N OF LIBERTY RD, San Joaquin, CA

Built 1972 Load: 24.3 t ADT: 1,120

ANGIER RD

Over: PIXLEY SLOUGH

0.4 MI N LIVE OAK RD, San Joaquin, CA

Built 1970 Load: 24.3 t ADT: 127

FURRY RD

Over: PIXLEY SLOUGH

0.7 MI N LIVE OAK RD, San Joaquin, CA

Built 1970 Load: 24.3 t ADT: 220

MICKE GROVE RD

Over: PIXLEY SLOUGH

0.5 MI S ARMSTRONG RD, San Joaquin, CA

Built 1970 Load: 24.3 t ADT: 1,079

STAGECOACH ROAD

Over: DUCK CREEK

0.1 MI N OF MARIPOSA RD, San Joaquin, CA

Built 1972 Load: 24.3 t ADT: 11,300

SEXTON RD

Over: LONE TREE CREEK

1.9 MI N OF S.H. 120, San Joaquin, CA

Built 1963 Load: 24.3 t ADT: 203

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