Los Angeles County, CA

3,937 public highway bridges

Los Angeles County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Los Angeles County, California contains 3,937 public highway bridges. Roughly 34.3% are rated “Good,” 17.1% “Fair,” and 2.2% “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.

3,937
Total Bridges
34.3%
Good
17.1%
Fair
2.2%
Poor Condition

Condition Distribution

Good
34.3% (1,350)
Fair
17.1% (675)
Poor
2.2% (88)

All Bridges (3,937)

STATE ROUTE 1

Good

Over: LAS FLORES CREEK

07-LA-001-44.15-MAL, Los Angeles, CA

Built 1926 Load: 42.8 t ADT: 43,250

STATE ROUTE 14

Good

Over: LOST CANYON ROAD UC

07-LA-014-32.53-SCTA, Los Angeles, CA

Built 1963 Load: 42.8 t ADT: 113,000

INTERSTATE 210

Good

Over: S BR BIG TUJUNGA WASH

07-LA-210-R10.53-LA, Los Angeles, CA

Built 1980 Load: 42.8 t ADT: 113,000

LANZIT AVE

Good

Over: COMPTON CREEK

0.1 MI W CENTRAL AVE, Los Angeles, CA

Built 1953 Load: 42.8 t ADT: 2,200

LASSEN ST

Good

Over: BULL CREEK

0.1 MI E HAYVENHURST AVE, Los Angeles, CA

Built 1956 Load: 42.8 t ADT: 21,100

U.S. HIGHWAY 101

Good

Over: WILBUR AVE

07-LA-101-21.76-LA, Los Angeles, CA

Built 1959 Load: 43.1 t ADT: 229,000

ROUTE 5

Good

Over: PENROSE STREET

07-LA-005-34.28-LA, Los Angeles, CA

Built 1961 Load: 43.1 t ADT: 4,320

INTERSTATE 605

Good

Over: WALNUT CREEK

07-LA-605-R19.85-BWP, Los Angeles, CA

Built 1957 Load: 43.1 t ADT: 237,090

SIERRE MADRE AVE

Good

Over: BIG DALTON WASH

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

Built 1968 Load: 43.1 t ADT: 5,605

THURMAN AVE

Good

Over: BALLONA CREEK

0.2 MI N WASHINGTON BLVD, Los Angeles, CA

Built 1974 Load: 43.1 t ADT: 2,462

HARBOR PLZ DR E

Good

Over: UPRR

200FT W/O PICO AVE, Los Angeles, CA

Built 1994 Load: 43.1 t ADT: 8,971

STATE ROUTE 91

Good

Over: UP RR, MTA BLUE LINE

07-LA-091-R9.97-COM, Los Angeles, CA

Built 1974 Load: 43.4 t ADT: 206,000

LARK ELLEN AVE

Good

Over: BIG DALTON WASH

0.4MI E/O ARROW HWY, Los Angeles, CA

Built 1960 Load: 43.4 t ADT: 16,640

CAMERON AVE

Good

Over: WALNUT CRK

300FT N/O SUNSET AVE, Los Angeles, CA

Built 1962 Load: 43.4 t ADT: 15,158

OCEAN VIEW BLVD

Good

Over: HALLS CYN CHAN

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

Built 1936 Load: 43.4 t ADT: 16,230

LAS FLORES CYN RD

Good

Over: LAS FLORES CRK

0.5MI N/O SR-1 HWY, Los Angeles, CA

Built 1996 Load: 43.4 t ADT: 1,572

INTERSTATE 405

Good

Over: VAN OWEN STREET

07-LA-405-41.86-LA, Los Angeles, CA

Built 1963 Load: 43.5 t ADT: 220,000

INTERSTATE 5

Good

Over: GORMAN CREEK

07-LA-005-R80.79, Los Angeles, CA

Built 1967 Load: 43.7 t ADT: 35,890

STATE ROUTE 2 EB

Good

Over: ROSEBUD AVE

07-LA-002-14.84-LA, Los Angeles, CA

Built 1962 Load: 43.7 t ADT: 30,500

VIA MARISOL

Good

Over: ARROYO SECO

50 FT E OF SR 110, Los Angeles, CA

Built 1940 Load: 43.7 t ADT: 9,500

BARRANCA AVE

Good

Over: SAN DIMAS WASH BRIDGE

0.1MI S/O ARROW HWY, Los Angeles, CA

Built 1959 Load: 43.7 t ADT: 18,485

MERCED AVE

Good

Over: WALNUT CRK

60FT W/O ORANGE AVE, Los Angeles, CA

Built 1961 Load: 43.7 t ADT: 11,726

ORANGE AVE

Good

Over: WALNUT CRK

50FT N/O MERCED AVE, Los Angeles, CA

Built 1961 Load: 43.7 t ADT: 25,633

AVE SCOTT

Good

Over: SAN FRANCISQUITO CYN CH

0.1MI W/O MCBEAN PRKWY, Los Angeles, CA

Built 2001 Load: 43.7 t ADT: 15,735

INTERSTATE 10

Good

Over: CHARTER OAK WASH

07-LA-010-37.61-WCOV, Los Angeles, CA

Built 1934 Load: 44.1 t ADT: 223,000

INTERSTATE 10

Good

Over: WALNUT CREEK CHANNEL

07-LA-010-38.32-WCOV, Los Angeles, CA

Built 1932 Load: 44.1 t ADT: 223,000

W2-S5 CONNECTOR RA

Good

Over: RIPPLE STREET

07-LA-002-15.32-LA, Los Angeles, CA

Built 1961 Load: 44.1 t ADT: 34,700

E FRK RD

Good

Over: GRAVEYARD CYN CRK

2.7MI E/O SAN GABRL CN RD, Los Angeles, CA

Built 1942 Load: 44.1 t ADT: 2,000

TEMPLE AVE

Good

Over: SAN JOSE CRK

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

Built 1961 Load: 44.1 t ADT: 29,900

LONGDEN AVE

Good

Over: EATON WASH

0.5MI E/O SN GABRIEL BLVD, Los Angeles, CA

Built 1957 Load: 44.1 t ADT: 4,386

FULTON AVE

Good

Over: LOS ANGELES RIVER

VLYHT DR N & VLYHT DR S, Los Angeles, CA

Built 1951 Load: 44.1 t ADT: 12,400

STATE ROUTE 27

Good

Over: SANTA SUSANA CREEK

07-LA-027-17.01-LA, Los Angeles, CA

Built 1964 Load: 44.4 t ADT: 35,250

INTERSTATE 405

Good

Over: NORDHOFF STREET

07-LA-405-44.74-LA, Los Angeles, CA

Built 1963 Load: 44.4 t ADT: 216,000

WILEY CYN RD

Good

Over: PICO CYN CHAN

1MI N/O LYONS AVE, Los Angeles, CA

Built 1971 Load: 44.4 t ADT: 19,468

PALLETT CRK RD

Good

Over: EVANS WASH

0.1MI S/O BIG PINES HWY, Los Angeles, CA

Built 1949 Load: 44.4 t ADT: 102

SAN MRTNZ GRAN CYN

Good

Over: SAN MRTNZ GRANDE CYN CRK

1.8MI N/O SR-126 HWY, Los Angeles, CA

Built 1949 Load: 44.4 t ADT: 204

CORBIN AVE

Good

Over: LIMEKILM CHANNEL

0.2 MI N NORDOFF ST, Los Angeles, CA

Built 1964 Load: 44.4 t ADT: 54,215

CULVER BLVD

Good

Over: SEPULVEDA CHANNEL

0.35 MI SW FWY405, Los Angeles, CA

Built 1951 Load: 44.4 t ADT: 19,145

URBANDALE AVE

Good

Over: BOUQUET CYN CHAN

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

Built 1966 Load: 44.4 t ADT: 4,896

Baseline Road

Good

Over: Thompson Creek

0.1 MI NORTH OF 210, Los Angeles, CA

Built 1998 Load: 44.4 t ADT: 24,624

LOWER AZUSA RD

Good

Over: EATON WASH

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

Built 1956 Load: 44.7 t ADT: 10,609

CENTURION WAY

Good

Over: BOUQUET CYN CHAN

0.2MI NW/O BOUQUET CYN RD, Los Angeles, CA

Built 1975 Load: 44.7 t ADT: 19,902

DECORO DR

Good

Over: SAN FRANCISQUITO CRK

0.3MI W/O MCBEAN PKWY, Los Angeles, CA

Built 2003 Load: 44.7 t ADT: 13,802

LA TIJERA BLVD

Good

Over: CENTINELA CREEK

50FT E/O ROUTE I-405, Los Angeles, CA

Built 1936 Load: 45.0 t ADT: 30,500

VICTORY BLVD

Good

Over: BELL CREEK (S FORK)

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

Built 1959 Load: 45.0 t ADT: 27,000

AVE H

Good

Over: CALIFORNIA AQUEDUCT

1.0MI S/O LANCASTER RD, Los Angeles, CA

Built 1967 Load: 45.0 t ADT: 101

FAURE AVE

Good

Over: SAN JOSE CRK

0.5MI S/O VALLEY, Los Angeles, CA

Built 2003 Load: 45.0 t ADT: 32,208

INTERSTATE 405

Good

Over: CONSTITUTION AVE

07-LA-405-31.90, Los Angeles, CA

Built 1957 Load: 45.3 t ADT: 283,000

ROUTE 10 EB

Good

Over: ALHAMBRA WASH

07-LA-010-25.50-RSMD, Los Angeles, CA

Built 1953 Load: 45.4 t ADT: 106,250

S405-N&S101 CONN

Good

Over: LOS ANGELES RIVER

07-LA-405-39.65-LA, Los Angeles, CA

Built 1958 Load: 45.4 t ADT: 42,500

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

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.