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 405

Over: INTERSTATE 110

07-LA-405-12.95-LA, Los Angeles, CA

Built 1961 ADT: 218,800

S110-S405 CONNECTR

Over: I 110

07-LA-110-8.75-LA, Los Angeles, CA

Built 1961 ADT: 199,500

N405-S110 CONNECTR

Over: INTERSTATE 110

07-LA-405-12.95-CRSN, Los Angeles, CA

Built 1961 ADT: 220,000

INTERSTATE 405

Over: N110-N405 CONNECTOR RAMP

07-LA-405-12.83-CRSN, Los Angeles, CA

Built 1961 ADT: 36,631

N110-S405 CONNECTR

Over: FIGUEROA STREET

07-LA-110-8.58-CRSN, Los Angeles, CA

Built 1961 ADT: 20,240

INTERSTATE 405

Over: FIGUEROA STREET

07-LA-405-12.73-CRSN, Los Angeles, CA

Built 1961 ADT: 8,000

N405-N&S110 CONNEC

Over: FIGUEROA STREET

07-LA-405-12.74-CRSN, Los Angeles, CA

Built 1961 ADT: 8,000

INTERSTATE 405

Over: S110-S405 CONNECTOR RAMP

07-LA-405-13.06-LA, Los Angeles, CA

Built 1961 ADT: 220,000

INTERSTATE 405

Over: VERMONT AVE, 190TH ST

07-LA-405-13.28-LA, Los Angeles, CA

Built 1962 ADT: 30,000

US HIGHWAY 101 SB

Over: N405-N101 CONNECTOR RAMP

07-LA-101-17.07L-LA, Los Angeles, CA

Built 1958 ADT: 93,000

S101-N405 CONNECTR

Over: I 405 & N101-S405 RAMP

07-LA-101-17.14L-LA, Los Angeles, CA

Built 1958 ADT: 18,001

N101-S405 CONNECTR

Over: I 405 & N101-S405 RAMP

07-LA-101-17.14R-LA, Los Angeles, CA

Built 1958 ADT: 18,000

US HIGHWAY 101 SB

Over: I 405 & N101-S405 RAMP

07-LA-101-17.14L-LA, Los Angeles, CA

Built 1958 ADT: 18,001

US HIGHWAY 101 NB

Over: I 405 & N101-S405 RAMP

07-LA-101-17.14R-LA, Los Angeles, CA

Built 1958 ADT: 18,000

US HIGHWAY 101 NB

Over: S405-S101 CONNECTOR RAMP

07-LA-101-17.29R-LA, Los Angeles, CA

Built 1958 ADT: 93,000

ROUTE 710

Over: WHITTIER BLVD

07-LA-710-23.77-LA, Los Angeles, CA

Built 1960 ADT: 17,500

HUMPHREYS AVE

Over: INTERSTATE 710 & CONNS

07-LA-710-24.22-LA, Los Angeles, CA

Built 1960 ADT: 192,000

THIRD STREET

Over: INTERSTATE 710

07-LA-710-24.47-LA, Los Angeles, CA

Built 1960 ADT: 15,000

FIRST ST

Over: INTERSTATE 710

07-LA-710-24.72-LA, Los Angeles, CA

Built 1960 ADT: 127,000

CESAR E. CHAVEZ AV

Over: INTERSTATE 710

07-LA-710-24.97-LA, Los Angeles, CA

Built 1960 ADT: 127,000

ROUTE 710 NB

Over: FLORAL DRIVE

07-LA-710-25.21-LA, Los Angeles, CA

Built 1960 ADT: 20,500

PEDESTRIAN WALKWAY

Over: STATE ROUTE 71

07-LA-071-2.02-POM, Los Angeles, CA

Built 1958 ADT: 72,000

PEDESTRIAN WALKWAY

Over: U.S. HIGHWAY 101

07-LA-101-26.68-LA, Los Angeles, CA

Built 1957 ADT: 210,000

INTERSTATE 405

Over: AVALON BLVD

07-LA-405-11.22-CRSN, Los Angeles, CA

Built 1961 ADT: 20,000

INTERSTATE 405

Over: WILMINGTON AVE

07-LA-405-9.56-CRSN, Los Angeles, CA

Built 1962 ADT: 23,800

INTERSTATE 405

Over: UP RR & ALAMEDA STREET

07-LA-405-8.76-CRSN, Los Angeles, CA

Built 1962 ADT: 8,200

OIL PIPELINE

Over: INTERSTATE 710

07-LA-710-20.51-BELL, Los Angeles, CA

Built 1957 ADT: 220,000

INTERSTATE 405

Over: CARSON STREET

07-LA-405-10.54-CRSN, Los Angeles, CA

Built 1961 ADT: 12,900

INTERSTATE 405

Over: WESTERN AVENUE

07-LA-405-14.40-LA, Los Angeles, CA

Built 1962 ADT: 15,000

ZOO DRIVE

Over: I 5

07-LA-005-26.47-LA, Los Angeles, CA

Built 1967 ADT: 5,000

INTERSTATE 405

Over: VAN NESS AVENUE

07-LA-405-14.92-TOR, Los Angeles, CA

Built 1962 ADT: 11,700

INTERSTATE 405

Over: CRENSHAW BLVD

07-LA-405-15.45-TOR, Los Angeles, CA

Built 1962 ADT: 25,000

INTERSTATE 405

Over: 182ND STREET

07-LA-405-15.73-TOR, Los Angeles, CA

Built 1962 ADT: 18,500

INTERSTATE 405

Over: YUKON AVENUE

07-LA-405-15.98-TOR, Los Angeles, CA

Built 1962 ADT: 5,000

INTERSTATE 405

Over: SHERMAN WAY

07-LA-405-42.36-LA, Los Angeles, CA

Built 1963 ADT: 25,000

INTERSTATE 405

Over: NORMANDIE AVE & RR

07-LA-405-13.83-LA, Los Angeles, CA

Built 1962 ADT: 1,000

GRIFFITH PARK DR-S

Over: S5-LOS FELIZ BL OFF RAMP

07-LA-005-24.60-LA, Los Angeles, CA

Built 1957 ADT: 22,000

N5-GRIFFITH PARK D

Over: ROUTE 5 & S5-LOS FELIZ B

07-LA-005-24.61-LA, Los Angeles, CA

Built 1957 ADT: 264,292

PEDESTRIAN WALKWAY

Over: INTERSTATE 5

07-LA-005-23.97-LA, Los Angeles, CA

Built 1957 ADT: 264,292

SP/UP RR

Over: INTERSTATE 110

07-LA-110-13.77-LA, Los Angeles, CA

Built 1986 ADT: 260,000

INTERSTATE 405

Over: STUDEBAKER ROAD

07-LA-405-0.45-LBCH, Los Angeles, CA

Built 1963 ADT: 99

INTERSTATE 405

Over: STEARNS STREET

07-LA-405-0.96-LBCH, Los Angeles, CA

Built 1963 ADT: 99

INTERSTATE 405

Over: PALO VERDE AVE

07-LA-405-1.11-LBCH, Los Angeles, CA

Built 1963 ADT: 99

INTERSTATE 405

Over: WOODRUFF AVE

07-LA-405-1.64-LBCH, Los Angeles, CA

Built 1963 ADT: 99

N405-BELLFLOWER BL

Over: LOS COYOTES DIAGONAL

07-LA-405-2.16-LBCH, Los Angeles, CA

Built 1963 ADT: 99

INTERSTATE 405

Over: BELLFLOWER BLVD

07-LA-405-2.18-LBCH, Los Angeles, CA

Built 1963 ADT: 99

NB BELLFLOWER-N405

Over: BELLFLOWER UC

07-LA-405-2.25-LBCH, Los Angeles, CA

Built 1963 ADT: 99

INTERSTATE 405

Over: CLARK AVE

07-LA-405-2.76-LBCH, Los Angeles, CA

Built 1963 ADT: 99

INTERSTATE 405

Over: LAKEWOOD BLVD

07-LA-405-3.30-LBCH, Los Angeles, CA

Built 1964 ADT: 31,300

N405-LAKEWOOD OFF

Over: LAKEWOOD BLVD

07-LA-405-3.30-LBCH, Los Angeles, CA

Built 1960 ADT: 99

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

Related

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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