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:

ROUTE 14 SB

Over: RANCHO VISTA BOULEVARD

07-LA-014-R61.37-PMDL, Los Angeles, CA

Built 1972 ADT: 9,800

ROUTE 14 NB

Over: RANCHO VISTA BOULEVARD

07-LA-014-R61.37-PMDL, Los Angeles, CA

Built 1972 ADT: 9,800

STATE ROUTE 14

Over: AVENUE "K"

07-LA-014-R66.73-LAN, Los Angeles, CA

Built 1972 ADT: 11,225

STATE ROUTE 14

Over: AVENUE "K"

07-LA-014-R66.73-LAN, Los Angeles, CA

Built 1972 ADT: 11,225

STATE ROUTE 14

Over: LANCASTER BLVD

07-LA-014-R68.46-LAN, Los Angeles, CA

Built 1972 ADT: 2,596

EL SEGUNDO BL-N405

Over: UP RR & EL SEGUNDO BL

07-LA-405-20.17-HAW, Los Angeles, CA

Built 1989 ADT: 40,659

MADISON AVE UTL OC

Over: ROUTE 210

07-LA-210-R25.97-PAS, Los Angeles, CA

Built 1976 ADT: 294,000

BALBOA BLVD

Over: ROUTE 118

07-LA-118-R7.80-LA, Los Angeles, CA

Built 1976 ADT: 222,000

RUFFNER AVE

Over: STATE ROUTE 118

07-LA-118-R8.05-LA, Los Angeles, CA

Built 1976 ADT: 222,000

E210-ROSEMEAD OFF

Over: SIERRA MADRE & E210 ONRP

07-LA-210-R29.35-PAS, Los Angeles, CA

Built 1976 ADT: 5,200

ROUTE 105 & LRT

Over: ROUTE 405,CONNS,STREETS

07-LA-105-R2.00-HAW, Los Angeles, CA

Built 1991 ADT: 5,989

ROUTE 105 WB

Over: IMPERIAL HWY

07-LA-105-R0.39-LA, Los Angeles, CA

Built 1990 ADT: 20,400

ROUTE 105 EB

Over: IMPERIAL HWY

07-LA-105-R0.39-LA, Los Angeles, CA

Built 1990 ADT: 22,440

IMP HWY EB ONRMP

Over: IMPERIAL HWY EB

07-LA-105-R0.85-ESEG, Los Angeles, CA

Built 1989 ADT: 22,440

ROUTE 105 EB

Over: BROADWAY

07-LA-105-R7.56-LA, Los Angeles, CA

Built 1989 ADT: 9,180

FIGUEROA ST

Over: S110-W105 CONNECTOR RAMP

07-LA-110-13.85-LA, Los Angeles, CA

Built 1991 ADT: 20,000

E105-S110 CONN

Over: UP RR,117TH ST, FIGUEROA

07-LA-105-R7.20-LA, Los Angeles, CA

Built 1991 ADT: 5,100

E105-N110 CONN

Over: ROUTE 105, 110, LRT

07-LA-105-R7.02-LA, Los Angeles, CA

Built 1989 ADT: 4,590

W105 & LRT

Over: I 110,BROADWAY,FIGUEROA

07-LA-105-R7.26-LA, Los Angeles, CA

Built 1991 ADT: 95,574

E105 & LRT

Over: I 110,S110-E105,FIGUEROA

07-LA-105-R7.26-LA, Los Angeles, CA

Built 1986 ADT: 95,574

S110-E105 CONNECTR

Over: I 110,BUS,HOV,N110-W105

07-LA-110-13.90-LA, Los Angeles, CA

Built 1991 ADT: 1,000

W105-S110 CONN

Over: 105 & 110,BROADWAY,117TH

07-LA-105-R7.43-LA, Los Angeles, CA

Built 1991 ADT: 224,400

N&S110-E105 CONN

Over: UP RR, 117TH ST,BROADWAY

07-LA-110-13.70-LA, Los Angeles, CA

Built 1991 ADT: 1,000

ROUTE 105 WB

Over: MAIN STREET

07-LA-105-R7.79-LA, Los Angeles, CA

Built 1985 ADT: 12,500

ROUTE 105 EB

Over: MAIN STREET

07-LA-105-R7.79-LA, Los Angeles, CA

Built 1985 ADT: 12,500

S710-ROSECRANS BL

Over: E105-S710 CONNECTOR RAMP

07-LA-710-R15.20-LYN, Los Angeles, CA

Built 1990 ADT: 9,300

W105-S710 CONN

Over: ROUTE 105 & LRT, 710

07-LA-105-R13.65-LYN, Los Angeles, CA

Built 1993 ADT: 9,850

N710-W105 CONNECTO

Over: RTES 105 & 710,LRT,CONN

07-LA-710-R15.44-LYN, Los Angeles, CA

Built 1990 ADT: 16,300

E105-N710 CONN

Over: ROUTE 105, 710 & LRT

07-LA-105-R13.14-LYN, Los Angeles, CA

Built 1990 ADT: 9,250

ROUTE 105 & LRT

Over: W105-S710 CONN

07-LA-105-R13.47-PRM, Los Angeles, CA

Built 1993 ADT: 22,700

S710-E105 CONNECTO

Over: RTES 105 & 710, LTR&CONN

07-LA-710-R16.01-LYN, Los Angeles, CA

Built 1990 ADT: 210,000

GARFIELD-W105 ONRA

Over: W105-N&S 710 CONN

07-LA-105-R13.83-PRM, Los Angeles, CA

Built 1993 ADT: 31,200

GARFIELD AVE

Over: ROUTE 105, LRT

07-LA-105-R14.13-PRM, Los Angeles, CA

Built 1989 ADT: 228,000

FACADE AVE

Over: ROUTE 105, LRT, SOMERSET

07-LA-105-R14.34-PRM, Los Angeles, CA

Built 1988 ADT: 250,000

PARAMOUNT BLVD OC

Over: ROUTE 105, LRT

07-LA-105-R14.65-SGT, Los Angeles, CA

Built 1989 ADT: 228,000

PEDESTRIAN WALKWAY

Over: ROUTE 105, LRT, SOMERSET

07-LA-105-R14.43-PRM, Los Angeles, CA

Built 1988 ADT: 250,000

UP RR

Over: ROUTE 105, LRT, SOMERSET

07-LA-105-R14.38-PRM, Los Angeles, CA

Built 1988 ADT: 250,000

MERKEL AVENUE

Over: ROUTE 105, LRT, RAMPS

07-LA-105-R14.95-PRM, Los Angeles, CA

Built 1989 ADT: 800

DOWNEY AVE

Over: ROUTE 105, LRT

07-LA-105-R15.09-PRM, Los Angeles, CA

Built 1989 ADT: 233,000

GARDENDALE, LAUREL

Over: ROUTE 105, LRT

07-LA-105-R15.36-DNY, Los Angeles, CA

Built 1989 ADT: 233,000

DYNA-METRIC DRWY

Over: EB 134-SB 710 CONNECTOR

07-LA-134-R13.22-PAS, Los Angeles, CA

Built 1975 ADT: 14,100

HAWTHORNE BLVD

Over: ROUTE 105 & LRT

07-LA-105-R3.05-HAW, Los Angeles, CA

Built 1993 ADT: 19,380

IMPERIAL HWY-N405

Over: W105-N405 CONNECTOR RAMP

07-LA-405-R21.32-LA, Los Angeles, CA

Built 1989 ADT: 20,000

ROUTE 105 & LRT

Over: INGLEWOOD AVE

07-LA-105-R2.53-HAW, Los Angeles, CA

Built 1993 ADT: 16,320

W105-N&S 405 CONN

Over: INGLEWOOD AVE

07-LA-105-R2.53-HAW, Los Angeles, CA

Built 1993 ADT: 16,320

S405-W105 CONNECTR

Over: IMPERIAL,LA CIENEGA,RAMP

07-LA-405-R21.42-LA, Los Angeles, CA

Built 1994 ADT: 2,500

N405-CENTURY BL OF

Over: E105-N405 & W105-N405 RP

07-LA-405-R21.28-LA, Los Angeles, CA

Built 1989 ADT: 4,000

N405-W105 CONN OC

Over: I 405,I 105, CONN

07-LA-405-R21.01-LA, Los Angeles, CA

Built 1991 ADT: 176,000

N&S405-W105 CONN

Over: IMPERIAL ON & OFF-RAMPS

07-LA-405-R21.18-LA, Los Angeles, CA

Built 1989 ADT: 15,000

S405-E105 CONNECTR

Over: I 405 & I 105, CONNS

07-LA-405-R21.51-HAW, Los Angeles, CA

Built 1991 ADT: 2,000

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