San Diego County, CA

1,707 public highway bridges

San Diego County Bridge Snapshot

San Diego County, California contains 1,707 public highway bridges in the FHWA National Bridge Inventory. Roughly 29.5% are rated “Good,” 20% “Fair,” 1.6% “Poor,” and 1.6% 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.

1,707

Total Bridges

29.5%

Good

1.6%

Poor

1.6%

Structurally Deficient

Condition Distribution

Good

29.5% (504)

Fair

20% (341)

Poor

1.6% (27)

SD

1.6% (27)

All Bridges (1,707)

Sort:

INTERSTATE 15 SB

Over: ROUTE 8

11-SD-015-R6.10-SD, San Diego, CA

Built 1960 ADT: 246,000

INTERSTATE 15 NB

Over: ROUTE 8

11-SD-015-R6.10-SD, San Diego, CA

Built 1960 ADT: 17,000

TEXAS STREET

Over: INTERSTATE 8

11-SD-008-3.90-SD, San Diego, CA

Built 1983 ADT: 219,000

25TH STREET

Over: STATE ROUTE 94

11-SD-094-1.85-SD, San Diego, CA

Built 1959 ADT: 109,000

PRESIDIO PARK DR

Over: INTERSTATE 8

11-SD-008-0.95-SD, San Diego, CA

Built 1959 ADT: 201,000

INTERSTATE 8

Over: MOLLISON AVE

11-SD-008-16.47-ECJ, San Diego, CA

Built 1961 ADT: 20,700

INTERSTATE 8

Over: FIRST STREET

11-SD-008-16.84-ECJ, San Diego, CA

Built 1961 ADT: 12,300

INTERSTATE 8 WB

Over: 2ND STREET

11-SD-008-17.35-ECJ, San Diego, CA

Built 1961 ADT: 27,000

INTERSTATE 8 EB

Over: 2ND STREET

11-SD-008-17.35-ECJ, San Diego, CA

Built 1961 ADT: 27,000

INTERSTATE 8 WB

Over: EAST MAIN STREET

11-SD-008-17.83-ECJ, San Diego, CA

Built 1961 ADT: 27,400

INTERSTATE 8 EB

Over: EAST MAIN STREET

11-SD-008-17.83-ECJ, San Diego, CA

Built 1961 ADT: 27,400

STATE ROUTE 78

Over: SMILAX DRIVE

11-SD-078-9.85, San Diego, CA

Built 1994 ADT: 3,160

RANCHO SANTA FE RD

Over: STATE ROUTE 78

11-SD-078-10.61, San Diego, CA

Built 1962 ADT: 136,000

STATE ROUTE 78

Over: LAS POSAS RD

11-SD-078-11.18-SMCS, San Diego, CA

Built 1994 ADT: 8,040

E78-GRAND AVE OFF

Over: LAS POSAS ROAD

11-SD-078-11.18-SMCS, San Diego, CA

Built 2006 ADT: 8,040

S5-10TH AV OFF RAM

Over: ROUTE 163 SB

11-SD-005-R16.11-SD, San Diego, CA

Built 1962 ADT: 9,250

STATE ROUTE 78

Over: SAN MARCOS BLVD

11-SD-078-12.13-SMCS, San Diego, CA

Built 1994 ADT: 41,256

STATE ROUTE 78

Over: WOODLAND PARKWAY

11-SD-078-14.24-SMCS, San Diego, CA

Built 1962 ADT: 1,600

INTERSTATE 5

Over: RTE 163, CONNECTORS

11-SD-005-R16.02-SD, San Diego, CA

Built 1961 ADT: 18,500

N163-N5 CONNECTOR

Over: SR 163 & S5-N163 CONN

11-SD-163-0.88-SD, San Diego, CA

Built 1962 ADT: 107,000

S163-S5 CONNECTOR

Over: SR 163 & S5-N163 CONN

11-SD-163-0.90-SD, San Diego, CA

Built 1962 ADT: 7,000

S5-N163 CONNECTOR

Over: SR 163

11-SD-005-R16.05-SD, San Diego, CA

Built 1962 ADT: 42,500

5TH AV-S5 ON-RAMP

Over: S5-10TH AV OFF-RAMP

11-SD-005-R16.18-SD, San Diego, CA

Built 1961 ADT: 17,700

N5-6TH AV OFF RAMP

Over: N&S163-N5 CONN RAMPS

11-SD-005-R16.17-SD, San Diego, CA

Built 1961 ADT: 20,300

STATE ROUTE 78

Over: MELROSE DR

11-SD-078-5.94-VSTA, San Diego, CA

Built 1994 ADT: 25,050

CIVIC CENTER DRIVE

Over: STATE ROUTE 78

11-SD-078-6.94-VSTA, San Diego, CA

Built 1962 ADT: 9,100

MAR VISTA DRIVE

Over: STATE ROUTE 78

11-SD-078-7.71-VSTA, San Diego, CA

Built 1962 ADT: 128,000

STATE ROUTE 78

Over: SYCAMORE AVE

11-SD-078-9.08-VSTA, San Diego, CA

Built 1994 ADT: 32,100

MTDB LRT & SDIV RR

Over: INTERSTATE 8

11-SD-008-10.96-LMSA, San Diego, CA

Built 1962 ADT: 175,000

SPRING ST SB

Over: INTERSTATE 8

11-SD-008-10.97-LMSA, San Diego, CA

Built 1962 ADT: 194,000

THIRD AVENUE

Over: ROUTE 5

11-SD-005-R16.47-SD, San Diego, CA

Built 1962 ADT: 200,000

FOURTH AVE

Over: ROUTE 5

11-SD-005-R16.42-SD, San Diego, CA

Built 1962 ADT: 200,000

FIFTH AVENUE

Over: ROUTE 5

11-SD-005-R16.37-SD, San Diego, CA

Built 1962 ADT: 2,500

SIXTH AVENUE

Over: ROUTE 5, CONNS, RAMPS

11-SD-005-R16.31-SD, San Diego, CA

Built 1962 ADT: 2,500

PARK BLVD

Over: I 5, CONNS, RAMPS

11-SD-005-R15.82-SD, San Diego, CA

Built 1962 ADT: 5,000

S5-CEDAR ST OFF-RA

Over: CEDAR STREET & 1ST AVE

11-SD-005-R16.55-SD, San Diego, CA

Built 1962 ADT: 14,500

1ST AV-N5 ON-RAMP

Over: N5-HAWTHORN ST OFF-RAMP

11-SD-005-R16.68-SD, San Diego, CA

Built 1962 ADT: 26,500

INTERSTATE 5

Over: GRAPE STREET

11-SD-005-R16.83-SD, San Diego, CA

Built 1962 ADT: 7,600

INTERSTATE 5 OFF

Over: GRAPE STREET

11-SD-005-R16.84-SD, San Diego, CA

Built 1962 ADT: 7,600

GRAPE STREET

Over: N5-HAWTHORN ST OFF-RAMP

11-SD-005-R16.80-SD, San Diego, CA

Built 1962 ADT: 29,000

INTERSTATE 5

Over: HAWTHORN STREET

11-SD-005-R16.91-SD, San Diego, CA

Built 1962 ADT: 4,580

STATE ROUTE 94 WB

Over: INTERSTATE 5

11-SD-094-1.42-SD, San Diego, CA

Built 1963 ADT: 10,600

STATE ROUTE 94 EB

Over: INTERSTATE 5

11-SD-094-1.42-SD, San Diego, CA

Built 1963 ADT: 10,600

S5-G ST OFF RAMP

Over: STATE ROUTE 94 EB

11-SD-005-R15.00-SD, San Diego, CA

Built 1963 ADT: 5,500

22ND STREET

Over: STATE ROUTE 94 & RAMPS

11-SD-094-1.63-SD, San Diego, CA

Built 1962 ADT: 114,000

S163-S5 CONNECTOR

Over: S5-E94 CONN & S5 OFF-RP

11-SD-163-0.70-SD, San Diego, CA

Built 1962 ADT: 16,000

PEDESTRIAN WALKWAY

Over: INTERSTATE 5

11-SD-005-R15.67-SD, San Diego, CA

Built 1963 ADT: 208,000

S5-E94 CONNECTOR

Over: I 5, STREETS, RAMPS

11-SD-005-R15.07-SD, San Diego, CA

Built 1963 ADT: 3,000

BROADWAY

Over: I 5, CONNS, ON&OFF RAMPS

11-SD-005-R15.18-SD, San Diego, CA

Built 1962 ADT: 33,000

INTERSTATE 5

Over: B STREET

11-SD-005-R15.32-SD, San Diego, CA

Built 1963 ADT: 3,360

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

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