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 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.

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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.