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)

INTERSTATE 405

Good

Over: OHIO AVENUE

07-LA-405-31.05-LA, Los Angeles, CA

Built 1959 Load: 32.4 t ADT: 283,000

INTERSTATE 5

Good

Over: BUENA VISTA ST,WINONA AV

07-LA-005-31.23-BRB, Los Angeles, CA

Built 1960 Load: 32.4 t ADT: 239,020

N5-E&W118 CONNECTR

Good

Over: PAXTON STREET

07-LA-005-39.05-LA, Los Angeles, CA

Built 1976 Load: 32.4 t ADT: 55,945

INTERSTATE 5

Good

Over: METROLINK,UP RR,SAN FERN

07-LA-005-34.58-LA, Los Angeles, CA

Built 1961 Load: 32.4 t ADT: 187,358

INTERSTATE 405

Good

Over: UP RR

07-LA-405-20.18-HAW, Los Angeles, CA

Built 1963 Load: 32.4 t ADT: 260,800

INTERSTATE 405

Good

Over: CENTINELA CREEK

07-LA-405-25.54-CLC, Los Angeles, CA

Built 1963 Load: 32.4 t ADT: 294,000

INTERSTATE 405

Good

Over: WESTWOOD FLOOD CTRL CH

07-LA-405-28.61-LA, Los Angeles, CA

Built 1959 Load: 32.4 t ADT: 296,000

INTERSTATE 5

Good

Over: GOLF CREEK

07-LA-005-25.55-LA, Los Angeles, CA

Built 1957 Load: 32.4 t ADT: 264,292

INTERSTATE 10

Good

Over: FAIRGROVE STORM DRAIN

07-LA-010-31.94-BWP, Los Angeles, CA

Built 1956 Load: 32.4 t ADT: 230,000

INTERSTATE 10

Good

Over: VINELAND ST STORM DRN

07-LA-010-32.85-BWP, Los Angeles, CA

Built 1956 Load: 32.4 t ADT: 209,000

INTERSTATE 10

Good

Over: W BIG DALTON AVE STM DRN

07-LA-010-33.05-BWP, Los Angeles, CA

Built 1956 Load: 32.4 t ADT: 209,000

INTERSTATE 10

Good

Over: BIG DALTON AVE STORM DRN

07-LA-010-33.09-BWP, Los Angeles, CA

Built 1956 Load: 32.4 t ADT: 209,000

INTERSTATE 10

Good

Over: MEEKER AVE STORM DRAIN

07-LA-010-34.00-WCOV, Los Angeles, CA

Built 1956 Load: 32.4 t ADT: 215,000

INTERSTATE 10

Good

Over: GLENDORA STORM DRAIN

07-LA-010-35.81-WCOV, Los Angeles, CA

Built 1956 Load: 32.4 t ADT: 215,000

RAMP/CONNECTOR 5

Good

Over: BURBANK WESTERN CHANNEL

07-LA-005-31.35-BRB, Los Angeles, CA

Built 1960 Load: 32.4 t ADT: 9,996

INTERSTATE 405

Good

Over: PORT ROAD

07-LA-405-26.29-CLC, Los Angeles, CA

Built 1960 Load: 32.4 t ADT: 296,000

STATE ROUTE 71

Good

Over: PHILADELPHIA ST STM DRN

07-LA-071-R3.88-POM, Los Angeles, CA

Built 1958 Load: 32.4 t ADT: 77,000

INTERSTATE 405

Good

Over: BEL AIR CREST RD NORTH

07-LA-405-35.81-LA, Los Angeles, CA

Built 1962 Load: 32.4 t ADT: 274,000

U.S. HIGHWAY 101

Good

Over: RUBIO AVE STORM DRAIN

07-LA-101-18.69-LA, Los Angeles, CA

Built 1958 Load: 32.4 t ADT: 296,000

INTERSTATE 5

Good

Over: EAST CANYON CHANNEL

07-LA-005-40.53-LA, Los Angeles, CA

Built 1963 Load: 32.4 t ADT: 156,373

INTERSTATE 110

Good

Over: 138TH STREET STORM DRAIN

07-LA-110-12.17-LA, Los Angeles, CA

Built 1960 Load: 32.4 t ADT: 253,000

INTERSTATE 710

Good

Over: LAGUNA CHANNEL

07-LA-710-26.12-MONP, Los Angeles, CA

Built 1961 Load: 32.4 t ADT: 185,000

FIRESTONE-S605 RMP

Good

Over: UP RR, DOWNEY-NORWALK RD

07-LA-605-R8.23-NRW, Los Angeles, CA

Built 1993 Load: 32.4 t ADT: 2,600

N605-FIRESTONE RMP

Good

Over: UP RR, DOWNEY-NORWALK RD

07-LA-605-R8.23-NRW, Los Angeles, CA

Built 1990 Load: 32.4 t ADT: 2,600

ROUTE 5

Good

Over: BURBANK WEST CHANNEL

07-LA-005-30.00-BRB, Los Angeles, CA

Built 1960 Load: 32.4 t ADT: 239,016

INTERSTATE 110

Good

Over: GALAVAN STORM DRAIN

07-LA-110-5.90-LA, Los Angeles, CA

Built 1962 Load: 32.4 t ADT: 199,500

INTERSTATE 5 SB

Good

Over: CALGROVE BLVD

07-LA-005-R49.03-SCTA, Los Angeles, CA

Built 1967 Load: 32.4 t ADT: 97,478

INTERSTATE 5 NB

Good

Over: CALGROVE BLVD

07-LA-005-R49.03-SCTA, Los Angeles, CA

Built 1967 Load: 32.4 t ADT: 97,478

STATE ROUTE 14

Good

Over: WARD WASH

07-LA-014-46.60, Los Angeles, CA

Built 1963 Load: 32.4 t ADT: 97,000

INTERSTATE 210

Good

Over: MAGNOLIA AVENUE

07-LA-210-R33.67-MNRO, Los Angeles, CA

Built 1966 Load: 32.4 t ADT: 258,000

INTERSTATE 210

Good

Over: DUNCANNON AVENUE

07-LA-210-R35.52-DRT, Los Angeles, CA

Built 1966 Load: 32.4 t ADT: 258,000

INTERSTATE 10

Good

Over: SAN JOSE WASH

07-LA-010-44.84-POM, Los Angeles, CA

Built 1963 Load: 32.4 t ADT: 247,000

INTERSTATE 605

Good

Over: SAN JOSE CREEK CHANNEL

07-LA-605-R15.70-PRV, Los Angeles, CA

Built 1964 Load: 32.4 t ADT: 251,000

INTERSTATE 605

Good

Over: ROSE HILLS CHANNEL

07-LA-605-R15.37-IDY, Los Angeles, CA

Built 1964 Load: 32.4 t ADT: 251,000

INTERSTATE 10

Good

Over: CHARITON ST STORM DRAIN

07-LA-010-R8.78-LA, Los Angeles, CA

Built 1964 Load: 32.4 t ADT: 268,000

INTERSTATE 5

Good

Over: NEWHALL RANCH DRAIN

07-LA-005-R55.28, Los Angeles, CA

Built 1964 Load: 32.4 t ADT: 134,090

INTERSTATE 210

Good

Over: MONTEREY AVENUE

07-LA-210-R33.10-MNRO, Los Angeles, CA

Built 1967 Load: 32.4 t ADT: 258,000

STATE ROUTE 14

Good

Over: ACTON CANYON WASH

07-LA-014-R49.00, Los Angeles, CA

Built 1965 Load: 32.4 t ADT: 98,000

STATE ROUTE 14

Good

Over: RED ROVER WASH

07-LA-014-R47.20, Los Angeles, CA

Built 1965 Load: 32.4 t ADT: 98,000

E134-W2 CONNECTOR

Good

Over: BROADWAY

07-LA-134-R8.95-LA, Los Angeles, CA

Built 1976 Load: 32.4 t ADT: 25,852

STATE ROUTE 14

Good

Over: MOUNTAIN SPRINGS WASH

07-LA-014-R53.61, Los Angeles, CA

Built 1965 Load: 32.4 t ADT: 105,000

STATE ROUTE 210

Good

Over: SAN DIMAS CHANNEL

07-LA-210-R44.43-GDR, Los Angeles, CA

Built 1970 Load: 32.4 t ADT: 191,000

INTERSTATE 10

Good

Over: KELLOGG DRIVE

07-LA-010-42.10-POM, Los Angeles, CA

Built 1972 Load: 32.4 t ADT: 209,000

INTERSTATE 605 NB

Good

Over: SANTA FE FLOOD BASIN

07-LA-605-25.09-IRW, Los Angeles, CA

Built 1970 Load: 32.4 t ADT: 67,000

INTERSTATE 210

Good

Over: LITTLE DALTON WASH

07-LA-210-R39.80-AZU, Los Angeles, CA

Built 1969 Load: 32.4 t ADT: 250,000

N14-NEWHALL WB OFF

Good

Over: NEWHALL AVENUE

07-LA-014-R27.04, Los Angeles, CA

Built 1971 Load: 32.4 t ADT: 1,500

STATE ROUTE 14

Good

Over: AVENUE S DRAIN

07-LA-014-R58.10, Los Angeles, CA

Built 1966 Load: 32.4 t ADT: 80,000

STATE ROUTE 14

Good

Over: AVENUE Q DRAIN

07-LA-014-R60.50-PMDL, Los Angeles, CA

Built 1966 Load: 32.4 t ADT: 89,000

SR 138 (PALMDALE)

Good

Over: RAILROAD DITCH

07-LA-138-44.36-PMDL, Los Angeles, CA

Built 1960 Load: 32.4 t ADT: 23,500

ROUTE 118

Good

Over: BORDEN AVE

07-LA-118-R13.44-LA, Los Angeles, CA

Built 1975 Load: 32.4 t ADT: 115,000

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.