San Diego County, CA

1,707 public highway bridges

San Diego County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, San Diego County, California contains 1,707 public highway bridges. Roughly 29.5% are rated “Good,” 20% “Fair,” and 1.6% “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.

1,707

Total Bridges

29.5%

Good

20%

Fair

1.6%

Poor Condition

Condition Distribution

Good

29.5% (504)

Fair

20% (341)

Poor

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.

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

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Compiled by PlainBridges, Independent data publisher

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.