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)

INTERSTATE 5 NB

Good

Over: MARIETTA STREET

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

Built 1960 Load: 29.2 t ADT: 129,000

INTERSTATE 5 SB

Good

Over: MARIETTA STREET

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

Built 1960 Load: 29.2 t ADT: 129,000

INTERSTATE 5 SB

Good

Over: FRAZIER MT PK RD

07-LA-005-R88.56, Los Angeles, CA

Built 1966 Load: 29.2 t ADT: 37,708

INTERSTATE 5

Good

Over: FRAZIER MT PK RD

07-LA-005-R88.56, Los Angeles, CA

Built 1966 Load: 29.2 t ADT: 37,708

LAKE HUGHES RD

Good

Over: VIOLIN CRK

1.0MI E/O I-5 FWY, Los Angeles, CA

Built 1971 Load: 29.2 t ADT: 2,958

STAGG ST

Good

Over: BULL CREEK

BALBOA & RUFFNER AV, Los Angeles, CA

Built 1955 Load: 29.2 t ADT: 2,000

STATE ROUTE 1

Good

Over: ESCONDIDO CREEK

07-LA-001-51.79, Los Angeles, CA

Built 1926 Load: 29.5 t ADT: 26,500

INTERSTATE 5

Good

Over: MARIETTA STREET

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

Built 1960 Load: 29.5 t ADT: 1,450

EB10-LA CIENEGA BL

Good

Over: GARTH AVE

07-LA-010-R8.65-LA, Los Angeles, CA

Built 1964 Load: 29.5 t ADT: 3,200

INTERSTATE 210 WB

Good

Over: POLK STREET

07-LA-210-R3.28-LA, Los Angeles, CA

Built 1969 Load: 29.5 t ADT: 38,000

N110-W91 CONNECTOR

Good

Over: ACCESS RD (DIRT)

07-LA-110-9.95-LA, Los Angeles, CA

Built 1985 Load: 29.5 t ADT: 5,250

MULHOLLAND HWY

Good

Over: LAS VIRGENES CR

3.5MI S/O US-101 FWY, Los Angeles, CA

Built 1941 Load: 29.5 t ADT: 1,122

PECK RD

Good

Over: SAN GABRIEL RIV

0.2MI S/O SR-60 FWY, Los Angeles, CA

Built 1952 Load: 29.5 t ADT: 14,317

CULLEN AVE

Good

Over: LITTLE DALTON WASH

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

Built 1959 Load: 29.5 t ADT: 3,687

ARTESIA BLVD

Good

Over: DOMINGUEZ CHAN

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

Built 1958 Load: 29.5 t ADT: 37,440

U.S. HIGHWAY 101

Good

Over: LIBERTY CANYON RD

07-LA-101-32.78, Los Angeles, CA

Built 1973 Load: 29.8 t ADT: 167,000

STATE ROUTE 57

Good

Over: METROLINK & UP RR

07-LA-057-R10.40-SDMS, Los Angeles, CA

Built 1971 Load: 29.8 t ADT: 158,000

N605-E210 CONN

Good

Over: BRADBURY FLOOD CTRL CH

07-LA-605-25.65-IRW, Los Angeles, CA

Built 1968 Load: 29.8 t ADT: 28,000

LOS COYOTES DIAG

Good

Over: LOS CERRITOS LINE E CHAN

0.3MI N/O SPRING ST, Los Angeles, CA

Built 1955 Load: 29.8 t ADT: 18,232

ELISE ST

Good

Over: CALIFORNIA AQUEDUCT

0.3MI E/O LA PETITE AVE, Los Angeles, CA

Built 1976 Load: 29.8 t ADT: 455

STATE STREET

Good

Over: METROLINK & BUSWAY

BTW MCALLISTER/POMEROY AV, Los Angeles, CA

Built 1925 Load: 29.8 t ADT: 19,272

INTERSTATE 5 SB

Good

Over: CASTAIC CREEK

07-LA-005-R56.26, Los Angeles, CA

Built 1968 Load: 30.1 t ADT: 54,420

INTERSTATE 210 EB

Good

Over: ABANDONED RR ROW

07-LA-210-R29.09-PAS, Los Angeles, CA

Built 1976 Load: 30.1 t ADT: 269,000

FIRESTONE BLVD S

Good

Over: COYOTE CRK

0.8MI E/O VALLEY VIEW AVE, Los Angeles, CA

Built 1950 Load: 30.1 t ADT: 3,556

LAS TUNAS DR

Good

Over: ARCADIA WASH

0.1MI E/O EL MONTE AVE, Los Angeles, CA

Built 1955 Load: 30.1 t ADT: 21,836

PECK RD

Good

Over: SAN GABRIEL RIV

0.3MI S/O SR-60 FWY, Los Angeles, CA

Built 1952 Load: 30.1 t ADT: 14,317

SOMERSET BLVD

Good

Over: LOS ANGELES RIV

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

Built 1976 Load: 30.1 t ADT: 21,024

WARDLOW RD

Good

Over: EL DORADO PARK E ACSS RD

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

Built 1963 Load: 30.1 t ADT: 19,186

GARZOTA DR

Good

Over: DRY CYN CHAN

0.3MI W/O SECO CYN RD, Los Angeles, CA

Built 1972 Load: 30.1 t ADT: 1,789

PAMPLICO DR

Good

Over: DRY CYN CHAN

0.1MI W/O SECO CYN RD, Los Angeles, CA

Built 1972 Load: 30.1 t ADT: 5,831

INTERSTATE 5

Good

Over: SONORA AVE

07-LA-005-27.54-GNDL, Los Angeles, CA

Built 1957 Load: 30.5 t ADT: 119,286

INTERSTATE 5

Good

Over: SONORA AVE

07-LA-005-27.54-GNDL, Los Angeles, CA

Built 1957 Load: 30.5 t ADT: 119,286

GLEN AVE

Good

Over: SAN JOSE CRK

0.5MI N/O HOLT AVE, Los Angeles, CA

Built 1963 Load: 30.5 t ADT: 1,020

FESTIVIDAD DR

Good

Over: DRY CYN CHAN

0.3MI W/O BOUQUET CYN RD, Los Angeles, CA

Built 1970 Load: 30.5 t ADT: 1,585

RAMONA ST

Good

Over: ALHAMBRA WASH

0.3MI N/O VALLEY BLVD, Los Angeles, CA

Built 1937 Load: 30.5 t ADT: 18,656

STATE ROUTE 1

Good

Over: SAN GABRIEL RIVER

07-LA-001-0.04-LBCH, Los Angeles, CA

Built 1931 Load: 30.8 t ADT: 36,400

ST RTE 1 (PCH)

Good

Over: SANTA MONICA STORM DRAIN

07-LA-001-37.01-LA, Los Angeles, CA

Built 1940 Load: 30.8 t ADT: 82,000

STATE ROUTE 1

Good

Over: BNSF RY

07-LA-001-9.93-LA, Los Angeles, CA

Built 1936 Load: 30.8 t ADT: 26,500

STATE ROUTE 14

Good

Over: AVENUE Q

07-LA-014-R60.19-PMDL, Los Angeles, CA

Built 1966 Load: 30.8 t ADT: 89,000

STATE ROUTE 134 EB

Good

Over: ARBOR DELL HILLMONT UC

07-LA-134-R10.97-LA, Los Angeles, CA

Built 1971 Load: 30.8 t ADT: 223,000

INTERSTATE 405

Good

Over: HILLSIDE

07-LA-405-32.72-LA, Los Angeles, CA

Built 1975 Load: 30.8 t ADT: 268,700

SAN FERNANDO RD

Good

Over: VERDUGO WA

0.1MI N/O US-101 FWY, Los Angeles, CA

Built 1939 Load: 30.8 t ADT: 37,044

GREENLEAF CYN RD

Good

Over: GREENLEAF CYN CRK

0.4MI W/O TOPANGA CYN BL, Los Angeles, CA

Built 1942 Load: 30.8 t ADT: 204

LEMON AVE

Good

Over: ARCADIA WASH

0.1MI E/O EL MONTE AVE, Los Angeles, CA

Built 1955 Load: 30.8 t ADT: 816

OAK GROVE DR

Good

Over: FLINT CYN WASH

0.3MI W/O WINDSOR AVE, Los Angeles, CA

Built 1955 Load: 30.8 t ADT: 6,347

W90-N405 CONNECTOR

Good

Over: SLAUSON AVE

07-LA-090-2.62-CLC, Los Angeles, CA

Built 1968 Load: 31.1 t ADT: 7,500

INTERSTATE 5 SB

Good

Over: LAKE HUGHES RD

07-LA-005-R59.49, Los Angeles, CA

Built 1968 Load: 31.1 t ADT: 37,177

WILLOW ST

Good

Over: LOS ANGELES RIV

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

Built 1946 Load: 31.1 t ADT: 35,638

2ND ST

Good

Over: HAYNES STEAM PLANT CH

0.9MI E/O SR-1 HWY, Los Angeles, CA

Built 1964 Load: 31.1 t ADT: 41,800

VALLEY VIEW S

Good

Over: COYOTE CRK

0.2MI S/O ARTESIA BLVD, Los Angeles, CA

Built 1966 Load: 31.1 t ADT: 21,361

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