San Joaquin County, CA

666 public highway bridges

San Joaquin County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, San Joaquin County, California contains 666 public highway bridges. Roughly 25.5% are rated “Good,” 38.9% “Fair,” and 6.2% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

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

666
Total Bridges
25.5%
Good
38.9%
Fair
6.2%
Poor Condition

Condition Distribution

Good
25.5% (170)
Fair
38.9% (259)
Poor
6.2% (41)

All Bridges (666)

UNDINE ROAD

Poor

Over: MIDDLE RIVER

2.1 MI W OF HOWARD RD, San Joaquin, CA

Built 1975 Load: 32.1 t ADT: 152

CORRAL HOLLOW RD

Poor

Over: CALIFORNIA AQUEDUCT

0.9 MI N OF S.H. 580, San Joaquin, CA

Built 1967 Load: 32.1 t ADT: 550

INTERSTATE 5 SB

Poor

Over: DELTA-MENDOTA CANAL

10-SJ-005-3.27, San Joaquin, CA

Built 1971 Load: 32.4 t ADT: 11,400

INTERSTATE 5 NB

Poor

Over: DELTA-MENDOTA CANAL

10-SJ-005-3.27, San Joaquin, CA

Built 1971 Load: 32.4 t ADT: 11,400

WAVERLY RD

Poor

Over: DUCK CREEK BRANCH

1.2 MI N OF SR 4, San Joaquin, CA

Built 2004 Load: 32.4 t ADT: 71

WALNUT GROVE ROAD

Poor

Over: MOKELUMNE RIVER

AT SJ & SAC COUNTY LINE, San Joaquin, CA

Built 1955 Load: 33.0 t ADT: 2,084

WATERLOO RD

Poor

Over: STOCKTON DIVERTING CANAL

0.2 MI S/W OF S.H. 99, San Joaquin, CA

Built 1967 Load: 34.7 t ADT: 13,366

TURNPIKE RD

Poor

Over: WALKER SLOUGH

1/4 MI N DOWNING AVE, San Joaquin, CA

Built 1971 Load: 34.7 t ADT: 2,100

MANTHEY ROAD

Poor

Over: WALKER SLOUGH

1/4 MI N DOWNING AV, San Joaquin, CA

Built 1971 Load: 34.7 t ADT: 4,600

DUSTIN RD

Poor

Over: DRY CREEK

0.8 MI N LIBERTY ROAD, San Joaquin, CA

Built 1974 Load: 37.3 t ADT: 846

W120-N5 CONNECTOR

Poor

Over: UP RR

10-SJ-120-R0.76, San Joaquin, CA

Built 1980 Load: 38.6 t ADT: 19,750

HOWARD ROAD

Poor

Over: SAN JOAQUIN RIVER 01

1.6 MI W OF S WOLFE RD, San Joaquin, CA

Built 1975 Load: 40.2 t ADT: 1,482

INTERSTATE 5 NB

Poor

Over: MOSHER SLOUGH

10-SJ-005-33.49, San Joaquin, CA

Built 1975 Load: 41.8 t ADT: 48,000

DON AVE

Poor

Over: MOSHER SLOUGH

0.1 MI S WAUDMAN AVE, San Joaquin, CA

Built 1976 Load: 41.8 t ADT: 10,641

INTERSTATE 5 SB

Poor

Over: CALIFORNIA AQUEDUCT

10-SJ-005-2.07, San Joaquin, CA

Built 1966 Load: 46.7 t ADT: 11,400

MCKINLEY ROAD

Poor

Over: NORTH LITTLE JOHNS CREEK

0.04 MI N INDUSTRIAL DR, San Joaquin, CA

Built 1972 Load: 50.9 t ADT: 4,300

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

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.