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:

INTERSTATE 205

Over: TRACY BLVD

10-SJ-205-R7.01-TRA, San Joaquin, CA

Built 1970 ADT: 19,300

INTERSTATE 205

Over: TRACY BLVD

10-SJ-205-R7.01-TRA, San Joaquin, CA

Built 1970 ADT: 19,300

PARADISE RD

Over: ROUTE 205

10-SJ-205-R9.61, San Joaquin, CA

Built 1970 ADT: 97,000

HOLLY DR

Over: INTERSTATE 205

10-SJ-205-R7.52-TRA, San Joaquin, CA

Built 1970 ADT: 95,000

INTERSTATE 205 WB

Over: MACARTHUR DR

10-SJ-205-R8.12-TRA, San Joaquin, CA

Built 1970 ADT: 14,805

INTERSTATE 205

Over: MACARTHUR DR

10-SJ-205-R8.12-TRA, San Joaquin, CA

Built 1970 ADT: 14,805

FULTON AVE

Over: MILGEO AVE, SR 99, UPRR

10-SJ-099-1.71, San Joaquin, CA

Built 1968 ADT: 113,000

PAVILLION-W205 ON

Over: GRANT LINE RD

10-SJ-205-R5.29-TRA, San Joaquin, CA

Built 1997 ADT: 10,955

INTERSTATE 205

Over: GRANT LINE RD

10-SJ-205-R5.29-TRA, San Joaquin, CA

Built 1970 ADT: 10,955

INTERSTATE 205

Over: GRANT LINE RD

10-SJ-205-R5.29-TRA, San Joaquin, CA

Built 1970 ADT: 10,955

INTERSTATE 5

Over: MONTE DIABLO AVE

10-SJ-005-27.91-STKN, San Joaquin, CA

Built 1970 ADT: 600

INTERSTATE 5

Over: MONTE DIABLO AVE

10-SJ-005-27.91-STKN, San Joaquin, CA

Built 1970 ADT: 550

INTERSTATE 5 NB

Over: COUNTRY CLUB BLVD

10-SJ-005-28.53-STKN, San Joaquin, CA

Built 1970 ADT: 10,000

INTERSTATE 5 NB

Over: ALPINE AVE

10-SJ-005-28.97, San Joaquin, CA

Built 1970 ADT: 10,000

INTERSTATE 5 NB

Over: TELEGRAPH AVE

10-SJ-005-29.19, San Joaquin, CA

Built 1970 ADT: 1,200

INTERSTATE 5 NB

Over: W MARCH LANE

10-SJ-005-29.99-STKN, San Joaquin, CA

Built 1970 ADT: 20,000

MAIN STREET-2ND ST

Over: STATE RTE 99,FRONTAGE RD

10-SJ-099-0.89-RIP, San Joaquin, CA

Built 1967 ADT: 107,000

I5-PERSHING AV OFF

Over: PARK STREET

10-SJ-005-27.00-STKN, San Joaquin, CA

Built 1970 ADT: 500

OLD US 50 OC

Over: RTE 205

10-SJ-205-R3.37, San Joaquin, CA

Built 1970 ADT: 106,000

SERVICE ROAD

Over: STATE ROUTE 132

10-SJ-132-0.98, San Joaquin, CA

Built 1966 ADT: 15,500

HANSEN RD

Over: I 205

10-SJ-205-2.38, San Joaquin, CA

Built 1970 ADT: 106,000

INTERSTATE 5 SB

Over: EIGHT MILE RD

10-SJ-005-35.30, San Joaquin, CA

Built 1975 ADT: 2,038

INTERSTATE 5 NB

Over: EIGHT MILE RD

10-SJ-005-35.30, San Joaquin, CA

Built 1975 ADT: 2,038

E205-N5 CONNECTOR

Over: INTERSTATE 5

10-SJ-205-R12.64, San Joaquin, CA

Built 1970 ADT: 23,000

INTERSTATE 5 SB

Over: W HAMMER LANE

10-SJ-005-32.66-STKN, San Joaquin, CA

Built 1970 ADT: 26,800

INTERSTATE 5 NB

Over: W HAMMER LANE

10-SJ-005-32.66-STKN, San Joaquin, CA

Built 1970 ADT: 26,800

INTERSTATE 5 NB

Over: W SWAIN ROAD

10-SJ-005-31.11, San Joaquin, CA

Built 1970 ADT: 13,300

S EL DORADO-S5 ON

Over: INTERSTATE 5

10-SJ-005-R20.95, San Joaquin, CA

Built 1971 ADT: 66,400

INTERSTATE 5 SB

Over: MATHEWS RD

10-SJ-005-R21.44, San Joaquin, CA

Built 1971 ADT: 650

INTERSTATE 5 NB

Over: MATHEWS RD

10-SJ-005-R21.44, San Joaquin, CA

Built 1971 ADT: 480

INTERSTATE 5 SB

Over: HOSPITAL ROAD

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

Built 1971 ADT: 650

INTERSTATE 5

Over: EIGHTH STREET

10-SJ-005-24.64-STKN, San Joaquin, CA

Built 1971 ADT: 650

INTERSTATE 5 NB

Over: EIGHTH STREET

10-SJ-005-24.64-STKN, San Joaquin, CA

Built 1971 ADT: 650

INTERSTATE 5 SB

Over: STATE RTE 4 (CHARTER WY)

10-SJ-005-25.35-STKN, San Joaquin, CA

Built 1971 ADT: 12,800

INTERSTATE 5 NB

Over: STATE RTE 4 (CHARTER WY)

10-SJ-005-25.35-STKN, San Joaquin, CA

Built 1971 ADT: 27,200

E&W4-S5 CONNECTOR

Over: CHURCH STREET

10-SJ-004-R16.00-STKN, San Joaquin, CA

Built 1972 ADT: 1,100

INTERSTATE 5 SB

Over: CHURCH STREET

10-SJ-005-25.99-STKN, San Joaquin, CA

Built 1972 ADT: 2,000

INTERSTATE 5 NB

Over: CHURCH STREET

10-SJ-005-25.99-STKN, San Joaquin, CA

Built 1972 ADT: 250

INTERSTATE 5 SB

Over: STATE ROUTE 4

10-SJ-005-26.12-STKN, San Joaquin, CA

Built 1972 ADT: 27,200

INTERSTATE 5 NB

Over: STATE ROUTE 4

10-SJ-005-26.12-STKN, San Joaquin, CA

Built 1972 ADT: 21,200

N5-W4 & S5-E4 CONN

Over: I 5 & SR4,CONS,SLU,3 STS

10-SJ-005-25.87-STKN, San Joaquin, CA

Built 1972 ADT: 450

SR 4 WB

Over: E4-N5, W4-S5 CONN RAMPS

10-SJ-004-R16.02-STKN, San Joaquin, CA

Built 1972 ADT: 27,200

SR 4 EB

Over: E4-N5, W4-S5 CONN RAMPS

10-SJ-004-R16.01-STKN, San Joaquin, CA

Built 1972 ADT: 27,200

W4-N&S5 CONNECTOR

Over: LINCOLN, UP RR, BNSF RY

10-SJ-004-R16.20-STKN, San Joaquin, CA

Built 1972 ADT: 6,000

SR 4 WB

Over: LINCOLN, UP RR, BNSF RY

10-SJ-004-R16.20-STKN, San Joaquin, CA

Built 1972 ADT: 6,000

SR 4 EB

Over: LINCOLN, UP RR, BNSF RY

10-SJ-004-R16.20-STKN, San Joaquin, CA

Built 1972 ADT: 6,000

W4-N&S5 CONNECTOR

Over: MADISON STREET

10-SJ-004-R16.48-STKN, San Joaquin, CA

Built 1972 ADT: 500

I5-E4 & CENTER

Over: MADISON STREET

10-SJ-005-26.11-STKN, San Joaquin, CA

Built 1972 ADT: 950

STATE ROUTE 4

Over: MADISON STREET

10-SJ-004-R16.47-STKN, San Joaquin, CA

Built 1972 ADT: 500

STATE ROUTE 4

Over: MADISON STREET

10-SJ-004-R16.47-STKN, San Joaquin, CA

Built 1972 ADT: 500

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