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:

MAPLE ST-W210

Over: W210-S710 & W210 CONN

07-LA-210-R25.21-PAS, Los Angeles, CA

Built 1974 ADT: 14,600

WALNUT ST

Over: E210-W134 CONNECTOR RAMP

07-LA-210-R24.94-PAS, Los Angeles, CA

Built 1974 ADT: 5,700

DEL MAR BLVD

Over: INTERSTATE 710

07-LA-710-T32.11-PAS, Los Angeles, CA

Built 1975 ADT: 47,000

GREEN ST

Over: INTERSTATE 710

07-LA-710-R32.37-PAS, Los Angeles, CA

Built 1975 ADT: 47,000

COLORADO BLVD

Over: INTERSTATE 710

07-LA-710-R32.45-PAS, Los Angeles, CA

Built 1975 ADT: 220,000

ST JOHN AVENUE

Over: E134-S710 CONNECTOR RAMP

07-LA-134-R13.23-PAS, Los Angeles, CA

Built 1975 ADT: 225,000

N710-W134 CONNECTR

Over: I 710, CONNS, ST JOHN AV

07-LA-710-R32.63-PAS, Los Angeles, CA

Built 1975 ADT: 32,900

WALNUT STREET

Over: W210&E210-S710,N710-W210

07-LA-210-R24.95-PAS, Los Angeles, CA

Built 1975 ADT: 9,300

ORANGE GROVE-E134

Over: SR 134 & CONNECTORS

07-LA-134-R13.07-PAS, Los Angeles, CA

Built 1974 ADT: 220,000

INTERSTATE 10

Over: LARK ELLEN AVE

07-LA-010-35.97-WCOV, Los Angeles, CA

Built 1975 ADT: 14,000

INTERSTATE 10

Over: HOLLENBECK STREET

07-LA-010-36.98-WCOV, Los Angeles, CA

Built 1975 ADT: 11,200

FAIR OAKS AVE

Over: ROUTE 210

07-LA-210-R25.29-PAS, Los Angeles, CA

Built 1975 ADT: 294,000

MARENGO AVE

Over: ROUTE 210

07-LA-210-R25.54-PAS, Los Angeles, CA

Built 1976 ADT: 294,000

LOS ROBLES AVE

Over: ROUTE 210

07-LA-210-R25.81-PAS, Los Angeles, CA

Built 1976 ADT: 294,000

EL MOLINO AVE

Over: ROUTE 210

07-LA-210-R26.07-PAS, Los Angeles, CA

Built 1976 ADT: 294,000

LAKE AVE

Over: ROUTE 210

07-LA-210-R26.33-PAS, Los Angeles, CA

Built 1976 ADT: 294,000

WILSON AVE

Over: ROUTE 210

07-LA-210-R26.57-PAS, Los Angeles, CA

Built 1976 ADT: 294,000

INTERSTATE 210 WB

Over: ALTADENA DR

07-LA-210-R28.25-PAS, Los Angeles, CA

Built 1976 ADT: 60,500

INTERSTATE 210 EB

Over: ALTADENA DR

07-LA-210-R28.25-PAS, Los Angeles, CA

Built 1976 ADT: 22,720

INTERSTATE 210 WB

Over: SIERRA MADRE BLVD

07-LA-210-R28.46-PAS, Los Angeles, CA

Built 1976 ADT: 60,500

INTERSTATE 210 EB

Over: SIERRA MADRE BLVD

07-LA-210-R28.46-PAS, Los Angeles, CA

Built 1976 ADT: 67,200

INTERSTATE 210 WB

Over: SUNNYSLOPE AVE

07-LA-210-R28.73-PAS, Los Angeles, CA

Built 1976 ADT: 67,200

INTERSTATE 210 EB

Over: SUNNYSLOPE AVE

07-LA-210-R28.73-PAS, Los Angeles, CA

Built 1976 ADT: 32,000

ROSEMONT AVE

Over: ROUTE 210

07-LA-210-R17.72, Los Angeles, CA

Built 1972 ADT: 166,000

PICKENS CYN FLM OC

Over: SR 210

07-LA-210-R17.79, Los Angeles, CA

Built 1972 ADT: 147,000

HALLS CYN FLUME OC

Over: SR 210

07-LA-210-R18.14, Los Angeles, CA

Built 1972 ADT: 147,000

OCEAN VIEW BLVD

Over: INTERSTATE 210

07-LA-210-R18.22, Los Angeles, CA

Built 1972 ADT: 186,000

LA CRESCENTA AVE

Over: ROUTE 210

07-LA-210-R17.38, Los Angeles, CA

Built 1972 ADT: 166,000

ROUTE 90

Over: CENTINELA AVE

07-LA-090-R1.72-LA, Los Angeles, CA

Built 1972 ADT: 17,000

STATE ROUTE 134

Over: I-710, STREET & CONN

07-LA-134-R13.24-PAS, Los Angeles, CA

Built 1975 ADT: 6,550

E134-W210 CONNECTR

Over: 210,710,134 & CONN

07-LA-134-R13.25-PAS, Los Angeles, CA

Built 1974 ADT: 220,000

BRIGGS AVENUE

Over: INTERSTATE 210

07-LA-210-R18.01, Los Angeles, CA

Built 1972 ADT: 186,000

RAMSDELL AVE

Over: ROUTE 210

07-LA-210-R17.09, Los Angeles, CA

Built 1972 ADT: 166,000

E134-FAIR OAKS AVE

Over: N710-E210 CONNECTOR

07-LA-210-R25.12-PAS, Los Angeles, CA

Built 1974 ADT: 295,000

STATE ROUTE 118 WB

Over: INTERSTATE 5

07-LA-118-R11.42L-LA, Los Angeles, CA

Built 1976 ADT: 291,000

STATE ROUTE 118 EB

Over: INTERSTATE 5

07-LA-118-R11.42R-LA, Los Angeles, CA

Built 1976 ADT: 291,000

LAUREL CYN BL ON R

Over: ROUTE 5

07-LA-118-R11.42L-LA, Los Angeles, CA

Built 1976 ADT: 291,000

LAUREL CYN BL OFF

Over: ROUTE 5

07-LA-118-R11.43R-LA, Los Angeles, CA

Built 1976 ADT: 275,825

W118-S5 CONNECTOR

Over: ROUTES 5 & 118,LAUREL CY

07-LA-118-R11.52L-LA, Los Angeles, CA

Built 1976 ADT: 133,500

E118-S5 CONN

Over: PAXTON ON/OFF RA, CHAN

07-LA-118-R11.41R-LA, Los Angeles, CA

Built 1976 ADT: 28,084

N5-W118 CONNECTOR

Over: I 5 & SR 118,CONNS,WASH

07-LA-005-39.31-LA, Los Angeles, CA

Built 1976 ADT: 276,650

S5-E118 CONNECTOR

Over: ROUTES 5 & 118, & CONNS

07-LA-005-39.36-LA, Los Angeles, CA

Built 1976 ADT: 133,798

ROUTE 118

Over: LAUREL CANYON BLVD

07-LA-118-R11.56L-LA, Los Angeles, CA

Built 1976 ADT: 14,504

N5-E118 CONNECTOR

Over: N5-PAXTON & PAXTON-N5

07-LA-005-39.15-LA, Los Angeles, CA

Built 1976 ADT: 4,440

LINDERO CANYON RD

Over: ROUTE 101

07-LA-101-37.54-WLKV, Los Angeles, CA

Built 1973 ADT: 175,000

ROUTE 118

Over: ARLETA AVE

07-LA-118-R11.05L-LA, Los Angeles, CA

Built 1976 ADT: 8,008

INTERSTATE 10

Over: W COVINA PARKWAY

07-LA-010-34.46-WCOV, Los Angeles, CA

Built 1975 ADT: 18,500

STATE ROUTE 91

Over: LONG BEACH BLVD

07-LA-091-R11.10-LBCH, Los Angeles, CA

Built 1974 ADT: 13,000

GRAND-W10 ON-RAMP

Over: N GARVEY AVENUE

07-LA-010-38.40-WCOV, Los Angeles, CA

Built 1975 ADT: 4,600

W10-GRAND OFF-RAMP

Over: N GARVEY AVENUE

07-LA-010-38.41-WCOV, Los Angeles, CA

Built 1975 ADT: 4,600

Read our methodology — how this data is sourced, computed, and verified.

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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