Orange County, CA

1,224 public highway bridges

Orange County Bridge Snapshot

Orange County, California contains 1,224 public highway bridges in the FHWA National Bridge Inventory. Roughly 35.3% are rated “Good,” 21.2% “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.

1,224

Total Bridges

35.3%

Good

2.2%

Poor

2.2%

Structurally Deficient

Condition Distribution

Good

35.3% (432)

Fair

21.2% (260)

Poor

2.2% (27)

SD

2.2% (27)

All Bridges (1,224)

Sort:

CROWTHER AVENUE

Over: CARBON CANYON CHANNEL

0.2 MI. W/O ORANGETHORPE, Orange, CA

Built 1990 Load: 32.4 t ADT: 3,300

W/B DIMENSION DR.

Over: SERRANO CREEK

0.3 MI. W/O LAKE FOREST, Orange, CA

Built 1987 Load: 32.4 t ADT: 6,000

E/B DIMENSION DR.

Over: SERRANO CREEK

0.3 MI. W/O LAKE FOREST, Orange, CA

Built 1987 Load: 32.4 t ADT: 6,080

PORTOLA PARKWAY

Over: SERRANO CREEK

0.3 MI. SE/O LAKE FOREST, Orange, CA

Built 1991 Load: 32.4 t ADT: 35,000

LAKE FOREST DRIVE

Over: EQUESTRIAN TRAIL UC

200 FT NO. OF RANCHO PKWY, Orange, CA

Built 1990 Load: 32.4 t ADT: 8,415

JUANITA STREET

Over: CARBON CREEK CHANNEL

0.1 MI. N/O BALL ROAD, Orange, CA

Built 1989 Load: 32.4 t ADT: 2,475

ANTONIO PARKWAY

Over: TIJERAS CREEK

0.8 MI SW/O AVENIDA BNDRA, Orange, CA

Built 1991 Load: 32.4 t ADT: 34,300

STONEHILL DRIVE

Over: SAN JUAN CREEK CHANNEL

0.4 MI. E/O DEL OBISPO ST, Orange, CA

Built 1992 Load: 32.4 t ADT: 31,000

PORTOLA PKWY

Over: ALISO CREEK

100' W/O EL TORO ROAD, Orange, CA

Built 1991 Load: 32.4 t ADT: 12,000

MARINA HILLS DRIVE

Over: EQUESTRIAN UC

100' EAST OF NIGUEL ROAD, Orange, CA

Built 1980 Load: 32.4 t ADT: 12,500

MAGNOLIA AVENUE

Over: UP RR

300' S/O ROUTE I-5 FRWY., Orange, CA

Built 1999 Load: 32.4 t ADT: 41,400

BONITA CANYON DR.

Over: BONITA CANYON

0.1 MI E/O MACARTHUR BL, Orange, CA

Built 1995 Load: 32.4 t ADT: 17,000

BONITA CANYON DR.

Over: WILDLIFE UC

0.2 MI. W/O RTE. 73 FWY., Orange, CA

Built 1995 Load: 32.4 t ADT: 17,000

IRVINE BLVD

Over: PETERS CANYON TRAIL UC

0.1 MI. W/O ROUTE 261, Orange, CA

Built 1998 Load: 32.4 t ADT: 26,400

HARBOR BOULEVARD

Over: SANTA ANA RIVER CHANNEL

0.2 MI N/O WARNER AVENUE, Orange, CA

Built 1994 Load: 32.4 t ADT: 54,000

CROWN VALLEY PKWY

Over: ARROYO TRABUCO

0.5 MI E/O MARGUERITE PWY, Orange, CA

Built 2000 Load: 32.4 t ADT: 33,160

BISON AVENUE

Over: BONITA CREEK

0.1 MI W/O RTE 73 FWY., Orange, CA

Built 1995 Load: 32.4 t ADT: 7,000

BONITA CANYON DR.

Over: BONITA CREEK

0.05 MI W/O ROUTE 73 FWY, Orange, CA

Built 1995 Load: 32.4 t ADT: 17,000

WOODRUFF STREET

Over: E GRDN GRVE WNTRSBG CHAN

0.2 MI N/O DREY ROAD, Orange, CA

Built 1997 Load: 32.4 t ADT: 1,000

AIRPORT DRIVE

Over: RTE 55 RAMP TRAFFIC

50' W/O MACARTHUR BLVD., Orange, CA

Built 1990 Load: 32.4 t ADT: 10,000

RTE 405 ACCESS OC

Over: RTE 55 RAMP TRAFFIC

50 FT W/O MACARTHUR BLVD, Orange, CA

Built 1990 Load: 32.4 t ADT: 10,000

JWA-MACARTHUR CONN

Over: JOHN WAYNE AIRPORT

UPPER DECK FOR DEPARTURE, Orange, CA

Built 1990 Load: 32.4 t ADT: 11,000

RTE 55 DEPARTURES

Over: RTE 55 ARRIVALS RAMP

NW/O DEPARTURES VIADUCT, Orange, CA

Built 1990 Load: 32.4 t ADT: 3,000

MACARTHUR DEPARTUR

Over: RTE 55 ARRIVALS RAMP

NE/O DEPARTURES VIADUCT, Orange, CA

Built 1990 Load: 32.4 t ADT: 8,000

DEPARTURES TRAFFIC

Over: ARRIVALS TRAFFIC

DOWN RAMP TO MACARTHER BL, Orange, CA

Built 1990 Load: 32.4 t ADT: 11,000

HARVARD AVENUE

Over: SAND CANYON CHANNEL

100' S/O UNIVERSITY DRIVE, Orange, CA

Built 1981 Load: 32.4 t ADT: 14,800

SB DISNEYLAND DR.

Over: DSNYLND PARKING TRAFFIC

0.25 MI. S/O BALL ROAD, Orange, CA

Built 2000 Load: 32.4 t ADT: 18,200

YALE AVENUE

Over: YALE AVENUE OH

0.7 MI SW/O FWY 5, Orange, CA

Built 1989 Load: 32.4 t ADT: 10,200

CANNON STREET

Over: UNKNOWN RAVINE

1.0 MI S/O NOHL RANCH RD, Orange, CA

Built 1993 Load: 32.4 t ADT: 18,900

AVE. VISTA HERMOSA

Over: SEGUNDA DESHECHA CANADA

0.1 MI EAST LA PATA, Orange, CA

Built 2003 Load: 32.4 t ADT: 14,300

MUOLTON PKWY

Over: EQUESTRIAN UNDERPASS

250' NW/O CROWN VALLEY PK, Orange, CA

Built 1989 Load: 32.4 t ADT: 20,880

PACIFIC COAST HWY

Over: PEDESTRIAN WALKWAY

0.09 MI SE OF PT MONARCH, Orange, CA

Built 1983 Load: 32.4 t ADT: 40,000

PARK AVENUE

Over: GRAND CANAL

0.1 MI. E/O MARINE AVE., Orange, CA

Built 2017 Load: 32.4 t ADT: 2,150

OIL SERVICE

Over: TIDAL INLET CHANNEL

350 FT EAST PCH, Orange, CA

Built 2006 Load: 32.4 t ADT: 1,000

CRYSTAL COVE

Over: LOS TRANSCOS CREEK

0.4 MI S/SW OF SR 1, Orange, CA

Built 1994 Load: 32.4 t ADT: 100

SANTIAGO CANYON RD

Over: WILLIAMS CANYON CREEK

0.8 MI N/O MODJESKA RD, Orange, CA

Built 1970 Load: 32.6 t ADT: 8,000

BURNING TREE RD

Over: BREA CREEK CHANNEL

100' S/O MALVERN AVE, Orange, CA

Built 1991 Load: 33.0 t ADT: 1,551

SR 90 (IMPERIAL)

Over: KELLOGG DRIVE

12-ORA-090-11.15-YBLN, Orange, CA

Built 1962 Load: 35.0 t ADT: 26,000

FLOWER ST

Over: SANTIAGO CREEK CHANNEL

0.3 MI N SANTA CLARA AVE, Orange, CA

Built 1930 Load: 35.6 t ADT: 5,500

EB CERRITOS AVE

Over: COYOTE CREEK CHANNEL

0.2 MI. W/O LOS ALAMITOS, Orange, CA

Built 1956 Load: 35.6 t ADT: 29,391

SEGERSTROM-SLATER

Over: SANTA ANA RIVER CHANNEL

0.3 MI. W/O HARBOR BLVD., Orange, CA

Built 1974 Load: 36.0 t ADT: 30,000

MARINE AVENUE

Over: BALBOA ISLAND CHANNEL

0.1 MI. S/O BAYSIDE DRIVE, Orange, CA

Built 1930 Load: 37.3 t ADT: 12,000

EL TORO ROAD

Over: BNSF RY,AMTRAK,METROLINK

0.3 MI. SW/O JERONIMO RD., Orange, CA

Built 1970 Load: 37.3 t ADT: 54,405

SLEEPY HOLLOW

Over: SILVERADO CREEK

300 FT S/O SILVERADO RD., Orange, CA

Built 1972 Load: 37.9 t ADT: 100

TUSTIN STREET

Over: SANTIAGO CREEK CHANNEL

0.3 MI. N/O ROUTE 22 FWY, Orange, CA

Built 1941 Load: 38.6 t ADT: 27,600

EL TORO ROAD

Over: ALISO CREEK

1.0 MI. NE/O TRABUCO ROAD, Orange, CA

Built 1975 Load: 38.6 t ADT: 42,000

ADMIRALTY DRIVE

Over: QUEEN ELIZABETH PASSAGE

0.1 MI NE/O PAC COAST HWY, Orange, CA

Built 1963 Load: 39.5 t ADT: 2,000

JERONIMO ROAD

Over: ALISO CREEK

0.35 MI. S/O TORO ROAD, Orange, CA

Built 1974 Load: 40.8 t ADT: 28,281

SR 241 NB

Over: OAK CANYON WILDLIFE

12-ORA-241-34.81-ANA, Orange, CA

Built 1998 Load: 41.5 t ADT: 20,500

STATE ROUTE 55

Over: BNSF RY,AMTRAK,METROLINK

12-ORA-055-R9.52-SA, Orange, CA

Built 1964 Load: 43.1 t ADT: 272,000

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