Los Angeles County, CA

3,937 public highway bridges

Los Angeles County Bridge Snapshot

Los Angeles County, California contains 3,937 public highway bridges in the FHWA National Bridge Inventory. Roughly 34.3% are rated “Good,” 17.1% “Fair,” 2.2% “Poor,” and 2.2% 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.

3,937

Total Bridges

34.3%

Good

2.2%

Poor

2.2%

Structurally Deficient

Condition Distribution

Good

34.3% (1,350)

Fair

17.1% (675)

Poor

2.2% (88)

SD

2.2% (88)

All Bridges (3,937)

Sort:

INTERSTATE 405

Over: REDONDO AVENUE

07-LA-405-3.82-LBCH, Los Angeles, CA

Built 1964 ADT: 12,600

TEMPLE AVE

Over: INTERSTATE 405

07-LA-405-4.33-LBCH, Los Angeles, CA

Built 1964 ADT: 278,000

SPRING STREET

Over: INTERSTATE 405

07-LA-405-4.53-LBCH, Los Angeles, CA

Built 1962 ADT: 278,000

CHERRY AVENUE

Over: ROUTE 405

07-LA-405-4.88-LBCH, Los Angeles, CA

Built 1964 ADT: 278,000

WALNUT AVENUE

Over: ROUTE 405

07-LA-405-5.14-LBCH, Los Angeles, CA

Built 1964 ADT: 268,600

ORANGE AVENUE

Over: ROUTE 405

07-LA-405-5.39-SIGH, Los Angeles, CA

Built 1964 ADT: 278,000

CALIFORNIA AVE

Over: I 405 & RAMPS

07-LA-405-5.64-SIGH, Los Angeles, CA

Built 1964 ADT: 278,000

ATLANTIC AVENUE

Over: ROUTE 405

07-LA-405-6.08-LBCH, Los Angeles, CA

Built 1963 ADT: 277,000

INTERSTATE 405

Over: LONG BEACH BLVD

07-LA-405-6.34-LBCH, Los Angeles, CA

Built 1963 ADT: 16,800

INTERSTATE 405

Over: WARDLOW ROAD

07-LA-405-6.50-LBCH, Los Angeles, CA

Built 1963 ADT: 11,200

INTERSTATE 405

Over: PACIFIC AVENUE

07-LA-405-6.70-LBCH, Los Angeles, CA

Built 1963 ADT: 3,500

INTERSTATE 405

Over: BLUE LINE LRT,PACIFIC PL

07-LA-405-6.98-LBCH, Los Angeles, CA

Built 1963 ADT: 4,900

I 405 & COLLECTOR

Over: ROUTE 710 & RAMPS

07-LA-405-7.57-LBCH, Los Angeles, CA

Built 1961 ADT: 212,600

WARDLOW RD-S405

Over: I 710 & CONNECTOR RAMPS

07-LA-405-7.57-LBCH, Los Angeles, CA

Built 1961 ADT: 133,000

INTERSTATE 405

Over: SANTA FE AVE

07-LA-405-8.06-LBCH, Los Angeles, CA

Built 1961 ADT: 17,000

S405-N710 CONN

Over: SANTA FE AVE

07-LA-405-8.06-LBCH, Los Angeles, CA

Built 1961 ADT: 17,800

ROSCOE BLVD

Over: ROUTE 5

07-LA-005-33.28-LA, Los Angeles, CA

Built 1960 ADT: 187,358

RAMP/CONNECTOR 5

Over: TUXFORD RAMP SEPARATION

07-LA-005-34.72-LA, Los Angeles, CA

Built 1961 ADT: 5,935

N5-TUXFORD OFF-RMP

Over: INTERSTATE 5

07-LA-005-34.82-LA, Los Angeles, CA

Built 1961 ADT: 187,358

LAUREL CYN BLVD

Over: ROUTE 5

07-LA-005-35.94-LA, Los Angeles, CA

Built 1963 ADT: 187,358

SHARP AV-S5 ON RMP

Over: S5-S170 CONNECTOR RAMP

07-LA-005-36.34-LA, Los Angeles, CA

Built 1963 ADT: 32,163

U.S. HIGHWAY 101

Over: VINELAND AVE

07-LA-101-11.11-LA, Los Angeles, CA

Built 1957 ADT: 15,500

U.S. HIGHWAY 101

Over: MOORPARK STREET

07-LA-101-11.45-LA, Los Angeles, CA

Built 1957 ADT: 19,201

INTERSTATE 405

Over: ARTESIA BLVD

07-LA-405-16.56-TOR, Los Angeles, CA

Built 1962 ADT: 40,000

INTERSTATE 405

Over: PRAIRIE AVENUE

07-LA-405-16.78-TOR, Los Angeles, CA

Built 1962 ADT: 37,294

INTERSTATE 405

Over: REDONDO BEACH BLVD

07-LA-405-16.88-TOR, Los Angeles, CA

Built 1962 ADT: 36,103

INTERSTATE 405

Over: HAWTHORNE BLVD

07-LA-405-17.56-LNDL, Los Angeles, CA

Built 1962 ADT: 55,100

INTERSTATE 405

Over: MANHATTAN BEACH BLVD

07-LA-405-17.86-LNDL, Los Angeles, CA

Built 1963 ADT: 16,217

INTERSTATE 405

Over: INGLEWOOD AVE

07-LA-405-18.23-LNDL, Los Angeles, CA

Built 1963 ADT: 13,726

INTRESTATE 405

Over: MARINE AVENUE

07-LA-405-18.63-RDOB, Los Angeles, CA

Built 1963 ADT: 12,524

INTERSTATE 405

Over: ROSECRANS AVE

07-LA-405-19.21-HAW, Los Angeles, CA

Built 1963 ADT: 28,514

N405-E&W105 CONN

Over: UPRR, EL SEGUNDO BL,RMPS

07-LA-405-20.19-HAW, Los Angeles, CA

Built 1989 ADT: 1,000

INTERSTATE 405

Over: EL SEGUNDO BLVD

07-LA-405-20.22-HAW, Los Angeles, CA

Built 1963 ADT: 28,659

E&W105-S405 CONN

Over: EL SEGUNDO BLVD

07-LA-105-R2.05-LA, Los Angeles, CA

Built 1989 ADT: 33,354

105-EL SEGUNDO BL

Over: EL SEGUNDO BLVD

07-LA-405-20.24-HAW, Los Angeles, CA

Built 1989 ADT: 28,659

INTERSTATE 405

Over: 120TH STREET

07-LA-405-R20.73-ESEG, Los Angeles, CA

Built 1963 ADT: 1,000

N405-E&W105 CONNCT

Over: 120TH STREET

07-LA-405-R20.72, Los Angeles, CA

Built 1989 ADT: 1,000

E&W105-S405 CONN

Over: 120TH STREET

07-LA-105-R2.02, Los Angeles, CA

Built 1989 ADT: 16,830

INTERSTATE 405

Over: IMPERIAL HIGHWAY

07-LA-405-R21.22-LA, Los Angeles, CA

Built 1963 ADT: 22,500

S405-LA CIENEGA OF

Over: IMPERIAL HWY & S405 ON

07-LA-405-R21.22-LA, Los Angeles, CA

Built 1994 ADT: 22,500

N405-CENTURY BL OF

Over: IMPERIAL HIGHWAY

07-LA-405-R21.22-LA, Los Angeles, CA

Built 1963 ADT: 22,000

IMPERIAL HWY-N405

Over: IMPERIAL HIGHWAY

07-LA-405-R21.22-HAW, Los Angeles, CA

Built 1994 ADT: 22,500

INTERSTATE 405

Over: CENTURY BLVD

07-LA-405-22.22-ING, Los Angeles, CA

Built 1963 ADT: 100,000

ARBOR VITAE STREET

Over: ROUTE 405

07-LA-405-22.40-ING, Los Angeles, CA

Built 1963 ADT: 1,000

HILLCREST BLVD

Over: ROUTE 405

07-LA-405-23.00-ING, Los Angeles, CA

Built 1963 ADT: 1,200

MANCHESTER BLVD

Over: ROUTE 405 & MNCHSTR-N405

07-LA-405-23.36-ING, Los Angeles, CA

Built 1961 ADT: 268,000

BNSF RAILWAY

Over: I-405 & NB RAMPS

07-LA-405-23.51-ING, Los Angeles, CA

Built 1961 ADT: 99

W FLORENCE AVENUE

Over: I-405 & NB RAMPS

07-LA-405-23.50-ING, Los Angeles, CA

Built 1961 ADT: 266,000

LA CIENEGA BLVD NB

Over: INTERSTATE 405

07-LA-405-23.64-ING, Los Angeles, CA

Built 1961 ADT: 266,000

LA CIENEGA BLVD SB

Over: INTERSTATE 405

07-LA-405-23.71-ING, Los Angeles, CA

Built 1961 ADT: 5,000

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