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:

LA SUBIDA DR

Over: HACIENDA CRK

0.1MI W/O HACIENDA BLVD, Los Angeles, CA

Built 1962 Load: 24.3 t ADT: 2,005

CEDARTREE RD

Over: LEMORAN AVE STORM DRN

0.1MI W/O PASSONS BLVD, Los Angeles, CA

Built 1967 Load: 24.3 t ADT: 2,499

BROOKPARK RD

Over: LEMORAN AVE STORM DRN

0.1MI W/O PASSONS BLVD, Los Angeles, CA

Built 1967 Load: 24.3 t ADT: 408

ROSCOE BLVD

Over: PACOIMA WASH

0.5 MI E/O SEPULVEDA BLVD, Los Angeles, CA

Built 1957 Load: 24.3 t ADT: 65,311

LASSEN ST

Over: GRANADA CHANNEL

0.1 MI W. HAVENHURST AVE, Los Angeles, CA

Built 1972 Load: 24.3 t ADT: 16,500

STATE ROUTE 57

Over: DIAMOND BAR BLVD

07-LA-057-R1.94-DMBR, Los Angeles, CA

Built 1972 Load: 24.6 t ADT: 198,000

FIFTH ST

Over: LITTLE DALTON WASH

0.5MI E/O AZUSA AVE, Los Angeles, CA

Built 1960 Load: 24.6 t ADT: 1,273

CERRITOS AVE

Over: LITTLE DALTON WASH

0.4MI S/O FOOTHILL BLVD, Los Angeles, CA

Built 1960 Load: 24.6 t ADT: 2,140

STATE ROUTE 1

Over: BALLONA CREEK

07-LA-001-30.36-LA, Los Angeles, CA

Built 1937 Load: 24.9 t ADT: 50,000

RAMP/CONNECTOR 118

Over: BROWNS CANYON WASH

07-LA-118-R2.55-LA, Los Angeles, CA

Built 1971 Load: 24.9 t ADT: 8,268

N110-N5 CONNECTOR

Over: HILLSIDE

07-LA-110-25.43L-LA, Los Angeles, CA

Built 1931 Load: 24.9 t ADT: 100

OLD TOPANGA CYN RD

Over: TOPANGA CYN CRK

50FT W/O TOPANGA CYN RD, Los Angeles, CA

Built 1926 Load: 24.9 t ADT: 3,900

SIERRA HWY NBND

Over: SANTA CLARA RIV

0.3MI S/O SOLEDAD CYN RD, Los Angeles, CA

Built 1968 Load: 24.9 t ADT: 18,044

INTERSTATE 5

Over: MARIETTA STREET

07-LA-005-16.29-LA, Los Angeles, CA

Built 1948 Load: 25.3 t ADT: 258,000

AMELIA AVE

Over: SAN DIMAS WASH

0.1MI N/O FOOTHILL AVE, Los Angeles, CA

Built 1962 Load: 25.3 t ADT: 7,262

GREENLEAF BLVD

Over: COMPTON CRK

0.1MI W/O WILLOWBROOK AVE, Los Angeles, CA

Built 1963 Load: 25.3 t ADT: 8,446

AZUSA LN

Over: LITTLE DALTON WASH

0.1MI E/O AZUSA AVE, Los Angeles, CA

Built 1960 Load: 25.6 t ADT: 153

INTERSTATE 5

Over: METROLINK&UP RR TUNNEL#5

07-LA-005S-C45.75, Los Angeles, CA

Built 1955 Load: 25.9 t ADT: 203,359

OLEANDER AVE

Over: COMPTON CRK

0.3MI S/O ALONDRA BLVD, Los Angeles, CA

Built 1938 Load: 25.9 t ADT: 11,330

INTERSTATE 5

Over: UP RR & AMTRAK

07-LA-005-18.96-LA, Los Angeles, CA

Built 1960 Load: 26.2 t ADT: 241,740

INTERSTATE 605

Over: UP RR & AMTRAK

07-LA-605-R11.20-SFSP, Los Angeles, CA

Built 1965 Load: 26.2 t ADT: 264,000

INTERSTATE 210

Over: BONNIE COVE

07-LA-210-R42.66-GDR, Los Angeles, CA

Built 1970 Load: 26.2 t ADT: 256,000

2ND ST

Over: ALAMITOS BAY CHAN

1.3MI W/O SR-1 HWY, Los Angeles, CA

Built 1967 Load: 26.2 t ADT: 43,248

SLAUSON AVE

Over: SAN GAB R BNSF UPRR ATSF

0.8MI W/O 605 FWY, Los Angeles, CA

Built 1958 Load: 26.2 t ADT: 30,000

STATE ROUTE 91

Over: UP RR

07-LA-091-R16.54-BFL, Los Angeles, CA

Built 1968 Load: 26.6 t ADT: 242,000

FOOTHILL BLVD

Over: SANTA ANITA WASH

0.2MI E/O SANTA ANITA AVE, Los Angeles, CA

Built 1928 Load: 26.6 t ADT: 27,242

GLENOAKS BLVD

Over: PACOIMA WASH

0.4MI E/O MACLAY AVE, Los Angeles, CA

Built 1953 Load: 26.6 t ADT: 21,632

INTERSTATE 110

Over: LACMTA & BNSF RY

07-LA-110-5.11-LA, Los Angeles, CA

Built 1962 Load: 26.9 t ADT: 199,500

ROSECRANS AVE W

Over: LOS ANGELES RIV

0.1MI E/O I-710 FWY, Los Angeles, CA

Built 1951 Load: 26.9 t ADT: 13,699

ROSECRANS AVE E

Over: LOS ANGELES RIV

0.1MI E/O I-710 FWY, Los Angeles, CA

Built 1951 Load: 26.9 t ADT: 13,248

INTERSTATE 5

Over: SAN GABRIEL RIVER

07-LA-005-7.06-DNY, Los Angeles, CA

Built 1953 Load: 27.2 t ADT: 234,600

FLORENCE AVE

Over: RIO HONDO

1.0MI W/O PARAMOUNT BLVD, Los Angeles, CA

Built 1953 Load: 27.2 t ADT: 37,484

CARSON ST

Over: DOMINGUEZ CHAN

0.1MI E/O I-405 FWY, Los Angeles, CA

Built 1959 Load: 27.2 t ADT: 15,600

FIRESTONE BLVD

Over: RIO HONDO

0.5MI E/O I-710 FWY, Los Angeles, CA

Built 1933 Load: 27.2 t ADT: 47,632

E60-N57 CONNECTOR

Over: PROSPECTORS ROAD

07-LA-060-R25.36-DMBR, Los Angeles, CA

Built 1970 Load: 27.5 t ADT: 71,400

E210-S57 CONNECTOR

Over: LACMTA & BNSF RY

07-LA-210-R44.04-GDR, Los Angeles, CA

Built 1970 Load: 27.5 t ADT: 95,000

MLK Jr. St.

Over: PRIVATE DRN #212

0.1MI E/O MAIN ST, Los Angeles, CA

Built 1967 Load: 27.5 t ADT: 6,120

STATE ROUTE 22 EB

Over: LOS CERRITOS CHANNEL

07-LA-022-1.09-LBCH, Los Angeles, CA

Built 1955 Load: 27.9 t ADT: 33,500

RAMP/CONNECTOR 710

Over: LOS ANGELES RIVER

07-LA-710-9.30-LBCH, Los Angeles, CA

Built 1963 Load: 27.9 t ADT: 35,000

INTERSTATE 405

Over: JEFFERSON BLVD

07-LA-405-25.93-LA, Los Angeles, CA

Built 1963 Load: 27.9 t ADT: 284,000

ROCKVALE AVE

Over: LITTLE DALTON WASH

0.1MI S/O ALOSTA BLVD, Los Angeles, CA

Built 1961 Load: 27.9 t ADT: 1,273

APPIAN WAY

Over: ALAMITOS BAY

0.2MI N/O 2ND ST, Los Angeles, CA

Built 1960 Load: 27.9 t ADT: 8,755

AVENUE 60

Over: ARROYO SECO CHANNEL

AT SR 110, Los Angeles, CA

Built 1909 Load: 27.9 t ADT: 16,300

INTERSTATE 5

Over: GORMAN SCHOOL RD

07-LA-005-R85.80, Los Angeles, CA

Built 1966 Load: 28.2 t ADT: 37,708

LONG BCH BLVD

Over: LOS ANGELES RIV

0.1MI E/O I-710 FWY, Los Angeles, CA

Built 1946 Load: 28.2 t ADT: 25,758

ARROW HWY

Over: BIG DALTON WASH

0.1MI W/O AZUSA AVE, Los Angeles, CA

Built 1956 Load: 28.2 t ADT: 12,059

CHIQUITO CYN RD

Over: SAN MRTNZ CHIQUITO CYN C

0.3MI N/O SR-126 HWY, Los Angeles, CA

Built 1958 Load: 28.2 t ADT: 1,836

INTERSTATE 5

Over: RIVERSIDE DR

07-LA-005-21.94-LA, Los Angeles, CA

Built 1961 Load: 28.5 t ADT: 283,000

STATE ROUTE 60

Over: RIO HONDO

07-LA-060-8.89, Los Angeles, CA

Built 1966 Load: 28.5 t ADT: 224,000

N2-W210 CONNECTOR

Over: WALTONIA DR

07-LA-002-R23.15-LCF, Los Angeles, CA

Built 1972 Load: 28.5 t ADT: 27,400

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 7, 2026