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:

INTERSTATE 110

Over: S110-E47 CONNECTOR RAMP

07-LA-110-R0.92-LA, Los Angeles, CA

Built 1970 ADT: 30,000

S47-GAFFEY OFF RMP

Over: STATE ROUTE 110

07-LA-047-L0.22-LA, Los Angeles, CA

Built 1970 ADT: 44,250

HOLLY DR OC

Over: ROUTE 2

07-LA-002-R19.05-GNDL, Los Angeles, CA

Built 1978 ADT: 8,000

HOLLY DRIVE

Over: W2-W&E134 CONNECTOR RMPS

07-LA-002-R19.05-GNDL, Los Angeles, CA

Built 1978 ADT: 8,000

STATE ROUTE 90

Over: MESMER AVE

07-LA-090-2.33-LA, Los Angeles, CA

Built 1968 ADT: 1,000

INTERSTATE 210 WB

Over: GLENOAKS BLVD

07-LA-210-R1.40-LA, Los Angeles, CA

Built 1969 ADT: 3,073

INTERSTATE 210 EB

Over: GLENOAKS BLVD

07-LA-210-R1.40-LA, Los Angeles, CA

Built 1969 ADT: 3,073

STATE ROUTE 90

Over: INGLEWOOD BLVD

07-LA-090-R2.01-LA, Los Angeles, CA

Built 1968 ADT: 6,000

W210-S605 CONNECTR

Over: I 210 & RAMPS

07-LA-210-R36.43-IRW, Los Angeles, CA

Built 1968 ADT: 8,000

STATE ROUTE 57

Over: ARROW HWY

07-LA-057-R10.74-SDMS, Los Angeles, CA

Built 1971 ADT: 17,500

INTERSTATE 210 WB

Over: MICHILLINDA AVENUE

07-LA-210-R29.79-ADA, Los Angeles, CA

Built 1971 ADT: 60,500

INTERSTATE 210 EB

Over: MICHILLINDA AVENUE

07-LA-210-R29.79-ADA, Los Angeles, CA

Built 1971 ADT: 60,500

COLORADO-E210 ON

Over: MICHILLINDA AVENUE

07-LA-210-R29.80-ADA, Los Angeles, CA

Built 1971 ADT: 4,100

W210-FOOTHILL OFF

Over: ROSEMEAD BLVD

07-LA-210-R29.49-PAS, Los Angeles, CA

Built 1971 ADT: 7,300

INTERSTATE 210 WB

Over: ROSEMEAD BLVD

07-LA-210-R29.49-PAS, Los Angeles, CA

Built 1971 ADT: 20,300

INTERSTATE 210 EB

Over: ROSEMEAD BLVD

07-LA-210-R29.49-PAS, Los Angeles, CA

Built 1971 ADT: 20,300

HUNTINGTON DR-S605

Over: CENTRAL AVENUE

07-LA-605-25.98-DRT, Los Angeles, CA

Built 1968 ADT: 1,400

N605 & E210-HTN DR

Over: CENTRAL AVENUE

07-LA-605-25.98-DRT, Los Angeles, CA

Built 1968 ADT: 1,400

RAMP/CONNECTOR 5

Over: SIERRA HWY-N5 ON-RAMP

07-LA-005S-C45.63-LA, Los Angeles, CA

Built 1971 ADT: 4,930

S14 TRK-S5 TRK CON

Over: ROUTE 5 TRK, SIERRA HWY

07-LA-014-R24.81-LA, Los Angeles, CA

Built 1971 ADT: 7,905

INTERSTATE 210 WB

Over: SIERRA MADRE VILLA AVE

07-LA-210-R29.29-PAS, Los Angeles, CA

Built 1976 ADT: 60,500

INTERSTATE 210 EB

Over: SIERRA MADRE VILLA AVE

07-LA-210-R29.29-PAS, Los Angeles, CA

Built 1976 ADT: 127,350

SR 2

Over: GLENOAKS BLVD

07-LA-002-R19.18-GNDL, Los Angeles, CA

Built 1978 ADT: 9,600

W2-W&E134 CONNECTO

Over: GLENOAKS BLVD

07-LA-002-R19.18-GNDL, Los Angeles, CA

Built 1978 ADT: 9,200

STATE ROUTE 57

Over: CIENEGA AVENUE

07-LA-057-R10.53-SDMS, Los Angeles, CA

Built 1971 ADT: 4,900

STATE ROUTE 210

Over: W210-S57 CONNECTOR RAMP

07-LA-210-R44.56-GDR, Los Angeles, CA

Built 1970 ADT: 29,500

STATE ROUTE 210

Over: LONE HILL AVENUE

07-LA-210-R44.20-GDR, Los Angeles, CA

Built 1970 ADT: 21,500

N57-W210 CONNECTOR

Over: LONE HILL AVENUE

07-LA-057-R12.00L-GDR, Los Angeles, CA

Built 1970 ADT: 19,600

N605-W210 CONN

Over: SR 605, SR 210 & RAMPS

07-LA-605-25.60-IRW, Los Angeles, CA

Built 1968 ADT: 22,000

STATE ROUTE 57

Over: GLADSTONE STREET

07-LA-057-R11.35L-SDMS, Los Angeles, CA

Built 1971 ADT: 6,300

STATE ROUTE 57 NB

Over: GLADSTONE STREET

07-LA-057-R11.35R-SDMS, Los Angeles, CA

Built 1971 ADT: 6,300

STATE ROUTE 57

Over: AUTO CENTER DRIVE

07-LA-057-R11.57L-GDR, Los Angeles, CA

Built 1971 ADT: 4,900

STATE ROUTE 57 NB

Over: AUTO CENTRE DRIVE

07-LA-057-R11.60R-GDR, Los Angeles, CA

Built 1971 ADT: 4,900

S57-S71 CONNECTOR

Over: STATE ROUTE 57 & CONNS

07-LA-057-R7.94-SDMS, Los Angeles, CA

Built 1972 ADT: 70,000

N57-W210 CONNECTOR

Over: INTERSTATE 210

07-LA-057-R11.79L-GDR, Los Angeles, CA

Built 1970 ADT: 191,000

INTERSTATE 5 SB

Over: METROLINK,UP RR,SAN FERN

07-LA-005-R44.87-LA, Los Angeles, CA

Built 1971 ADT: 7,500

INTERSTATE 5 NB

Over: METROLINK,UP RR,SAN FERN

07-LA-005-R44.87, Los Angeles, CA

Built 1971 ADT: 7,500

S5-E210 CONNECTOR

Over: I 5 & CONNECTORS

07-LA-005-R44.01-LA, Los Angeles, CA

Built 1975 ADT: 17,800

BALBOA BLVD

Over: I5,I5 TRUCK,CO RD,UP RR

07-LA-005-R44.43-LA, Los Angeles, CA

Built 1971 ADT: 281,078

N71-W10 CONNECTOR

Over: I 10 & CONN

07-LA-071-R0.58-POM, Los Angeles, CA

Built 1972 ADT: 29,500

W210-S5 CONNECTOR

Over: W210-N5 CONNECTOR RAMP

07-LA-210-R0.12-LA, Los Angeles, CA

Built 1971 ADT: 15,600

W210-S5 CONNECTOR

Over: I5,I210,ST,UPRR,I5 TRUCK

07-LA-210-R0.06-LA, Los Angeles, CA

Built 1975 ADT: 16,425

W210-N5 CONNECTOR

Over: I 5 TRUCK NBND

07-LA-210-R0.02-LA, Los Angeles, CA

Built 1971 ADT: 17,800

N57-W210 CONNECTOR

Over: W210-S57 CONNECTOR RAMP

07-LA-057-R11.65L-GDR, Los Angeles, CA

Built 1971 ADT: 22,000

STATE ROUTE 210

Over: AMELIA AVENUE

07-LA-210-R44.71-GDR, Los Angeles, CA

Built 1970 ADT: 3,500

AMELIA AVE

Over: W210-S57 CONNECTOR RAMP

07-LA-210-R44.72-GDR, Los Angeles, CA

Built 1970 ADT: 29,500

STATE ROUTE 57

Over: COVINA BLVD

07-LA-057-R10.27-SDMS, Los Angeles, CA

Built 1971 ADT: 7,000

E&W10-S57 CONN

Over: SAN JOSE WASH, CAMPUS DR

07-LA-010-42.34-POM, Los Angeles, CA

Built 1972 ADT: 99

STATE ROUTE 71 WB

Over: I 10 & CONN

07-LA-071-R0.52-POM, Los Angeles, CA

Built 1972 ADT: 247,000

STATE ROUTE 71 EB

Over: I 10 & CONN

07-LA-071-R0.52-POM, Los Angeles, CA

Built 1972 ADT: 11,300

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