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 8 EB

Over: LOS COCHES RD

11-SD-008-R20.04, San Diego, CA

Built 1965 ADT: 16,700

INTERSTATE 8 WB

Over: BROADWAY

11-SD-008-R18.41-ECJ, San Diego, CA

Built 1965 ADT: 28,600

INTERSTATE 8 EB

Over: BROADWAY

11-SD-008-R18.41-ECJ, San Diego, CA

Built 1965 ADT: 28,600

INTERSTATE 8 WB

Over: GREENFIELD DR

11-SD-008-R18.73-ECJ, San Diego, CA

Built 1965 ADT: 25,900

INTERSTATE 8 EB

Over: GREENFIELD DR

11-SD-008-R18.73-ECJ, San Diego, CA

Built 1965 ADT: 25,900

INTERSTATE 5

Over: LOMAS SANTA FE DR

11-SD-005-R37.38-SOLB, San Diego, CA

Built 1963 ADT: 29,400

SASSAFRAS ST SB

Over: BNSF, LRT, KETTNER, STS

11-SD-005-R17.60-SD, San Diego, CA

Built 1965 ADT: 15,571

N5-PACIFIC HWY OFF

Over: I 5, BNSF, MTDB LRT, STS

11-SD-005-R17.57-SD, San Diego, CA

Built 1965 ADT: 17,000

INTERSTATE 5

Over: CARMEL VALLEY RD

11-SD-005-R32.90-SD, San Diego, CA

Built 1964 ADT: 12,700

DEL MAR HEIGHTS RD

Over: INTERSTATE 5

11-SD-005-R34.13-SD, San Diego, CA

Built 1988 ADT: 245,000

INTERSTATE 5

Over: VIA DE LA VALLE

11-SD-005-R36.27-SD, San Diego, CA

Built 1964 ADT: 22,100

PEDESTRIAN WALKWAY

Over: INTERSTATE 5

11-SD-005-R17.50-SD, San Diego, CA

Built 1965 ADT: 183,000

INTERSTATE 15

Over: S15-MAIN,S BR CHOLLAS CR

11-SD-015-0.45-SD, San Diego, CA

Built 1954 ADT: 4,450

INTERSTATE 15

Over: MTDB LRT,SDIVRR,IMPERIAL

11-SD-015-1.49-SD, San Diego, CA

Built 1951 ADT: 14,200

INTERSTATE 15

Over: MARKET STREET

11-SD-015-1.85-SD, San Diego, CA

Built 1954 ADT: 22,300

MARKET-N15 ON-RAMP

Over: MARKET STREET

11-SD-015-1.85-SD, San Diego, CA

Built 1996 ADT: 22,300

ADAMS AVENUE

Over: INTERSTATE 15 & RAMP

11-SD-015-M5.60-SD, San Diego, CA

Built 1960 ADT: 11,000

INTERSTATE 15

Over: SAN DIEGO RIVER

11-SD-015-R6.26-SD, San Diego, CA

Built 1960 ADT: 2,400

W78-S15 CONNECTOR

Over: METCALF STREET

11-SD-078-R16.66-ESD, San Diego, CA

Built 1977 ADT: 5,450

STATE ROUTE 78 WB

Over: METCALF STREET

11-SD-078-R16.66-ESD, San Diego, CA

Built 1964 ADT: 5,450

STATE ROUTE 78 EB

Over: METCALF STREET

11-SD-078-R16.66-ESD, San Diego, CA

Built 1964 ADT: 5,450

ROCK SPRINGS RD

Over: STATE ROUTE 78

11-SD-078-R16.93-ESD, San Diego, CA

Built 1964 ADT: 89,000

STATE ROUTE 78 WB

Over: CENTRE CITY PARKWAY

11-SD-078-R17.27-ESD, San Diego, CA

Built 1964 ADT: 27,930

STATE ROUTE 78 EB

Over: CENTRE CITY PARKWAY

11-SD-078-R17.27-ESD, San Diego, CA

Built 1964 ADT: 27,930

E78-CENTRE CITY PK

Over: CENTRE CITY PARKWAY

11-SD-078-R17.27-ESD, San Diego, CA

Built 1964 ADT: 27,930

CLAIREMONT MESA EB

Over: STATE ROUTE 163 & RAMPS

11-SD-163-8.81-SD, San Diego, CA

Built 1964 ADT: 6,700

INTERSTATE 5 NB

Over: INTERSTATE 805

11-SD-005-R30.64R-SD, San Diego, CA

Built 1966 ADT: 150,000

INTERSTATE 5 SB

Over: SORRENTO VLY,CRK,BNSF RY

11-SD-005-R30.44L-SD, San Diego, CA

Built 1966 ADT: 1,000

INTERSTATE 5 NB

Over: SORRENTO VLY,CRK,BNSF RY

11-SD-005-R30.43R-SD, San Diego, CA

Built 1966 ADT: 14,000

WB52&NB5-LA JOLLA

Over: MTDB,BNSF,AMTRAK,I 5,CON

11-SD-052-0.19-SD, San Diego, CA

Built 1966 ADT: 14,900

W52-S5 CONNECTOR

Over: INTERSTATE 5

11-SD-052-0.28-SD, San Diego, CA

Built 1966 ADT: 193,000

INTERSTATE 5

Over: GILMAN DRIVE

11-SD-005-R26.79-SD, San Diego, CA

Built 1966 ADT: 27,100

INTERSTATE 5

Over: GILMAN DRIVE

11-SD-005-R26.79-SD, San Diego, CA

Built 1966 ADT: 27,100

LA JOLLA VILLAGE R

Over: INTERSTATE 5

11-SD-005-R28.43-SD, San Diego, CA

Built 1966 ADT: 140,000

VOIGT DRIVE

Over: INTERSTATE 5

11-SD-005-R29.09-SD, San Diego, CA

Built 1966 ADT: 153,000

BIRMINGHAM DR

Over: ROUTE 5

11-SD-005-R39.83-ENTS, San Diego, CA

Built 1964 ADT: 210,000

MACKINNON AVE

Over: INTERSTATE 5

11-SD-005-R40.12, San Diego, CA

Built 1964 ADT: 210,000

INTERSTATE 5

Over: SANTA FE DR

11-SD-005-R40.60-ENTS, San Diego, CA

Built 1964 ADT: 24,700

INTERSTATE 5

Over: SANTA FE DR

11-SD-005-R40.60-ENTS, San Diego, CA

Built 1964 ADT: 24,700

REQUEZA STREET

Over: ROUTE 5

11-SD-005-R41.18-ENTS, San Diego, CA

Built 1964 ADT: 210,000

INTERSTATE 5 SB

Over: ENCINITAS BLVD

11-SD-005-R41.51, San Diego, CA

Built 1964 ADT: 34,100

INTERSTATE 5 NB

Over: ENCINITAS BLVD

11-SD-005-R41.51-ENTS, San Diego, CA

Built 1964 ADT: 34,100

INTERSTATE 8 WB

Over: FLINN SPRINGS RD

11-SD-008-R23.66, San Diego, CA

Built 1965 ADT: 2,070

INTERSTATE 8 EB

Over: FLINN SPRINGS RD

11-SD-008-R23.64, San Diego, CA

Built 1965 ADT: 2,070

INTERSTATE 15 SB

Over: MERCY ROAD

11-SD-015-M17.31-SD, San Diego, CA

Built 1975 ADT: 16,070

INTERSTATE 15 NB

Over: MERCY ROAD

11-SD-015-M17.31-SD, San Diego, CA

Built 1977 ADT: 16,070

STATE ROUTE 94 WB

Over: BANCROFT DRIVE

11-SD-094-R11.08-LMSA, San Diego, CA

Built 1966 ADT: 20,200

STATE ROUTE 94 EB

Over: BANCROFT DRIVE

11-SD-094-R11.08-LMSA, San Diego, CA

Built 1966 ADT: 20,200

INTERSTATE 8 WB

Over: HARBISON CANYON RD

11-SD-008-R25.69, San Diego, CA

Built 1966 ADT: 2,130

INTERSTATE 8 EB

Over: HARBISON CANYON RD

11-SD-008-R25.68, San Diego, CA

Built 1966 ADT: 2,130

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